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Yu N, Bai J, Cao H, Yao H, Shi G, Yuan H, Xu Z, Luo F, Li M, Si R. Electrocatalysis coupled heterogeneous electro-Fenton like treatment of coal gasification wastewater using tourmaline as catalyst: process parameters and response surface. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:20207-20221. [PMID: 38369660 DOI: 10.1007/s11356-024-32457-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/08/2024] [Indexed: 02/20/2024]
Abstract
Coal gasification technology is essential for realizing clean and efficient conversion of coal, as well as for reducing carbon emissions. However, coal gasification technology is accompanied by a large amount of coal gasification wastewater that is biodegradable. In this work, tourmaline was applied as a catalyst in electro-Fenton like process for treating coal gasification wastewater. The optimal applied parameters of coal gasification wastewater were investigated as follows: current density of 90 mA cm-2, tourmaline dosage of 8 g L-1, electrode gap of 1 cm, and temperature at 25 °C; the COD removal ratio reached 91.24% after 240-min treatment. In addition, the current density and tourmaline dosage were further optimized by response surface method. The result was about current density with 82.4 mA cm-2 and catalyst with 7.57 g L-1; the predicted COD removal efficiency was 86.91%. Under the optimal parameters the actual COD removal efficiency was 88.25% a little high than the predicted value. To explore the reusability of tourmaline as Fenton reaction catalyst, five cycles of experiments were carried out. The result demonstrated that tourmaline could be used as catalyst for treating coal gasification wastewater by electro-Fenton like process.
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Affiliation(s)
- Naichuan Yu
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China.
- Tianjin Key Laboratory of Nano-Optoelectronic Display Materials and Components, Tianjin, 301830, China.
| | - Junxue Bai
- School of Biological and Environmental Engineering, Tianjin Vocational Institute, Tianjin, 300410, China
| | - Hanfei Cao
- College of Food Science& Nutritional Engineering, China Agricultural University, Beijing, 100091, China
| | - Hao Yao
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Guangyao Shi
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Hao Yuan
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Zhilong Xu
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
- Tianjin Key Laboratory of Nano-Optoelectronic Display Materials and Components, Tianjin, 301830, China
| | - Fuchen Luo
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Mingyu Li
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Rongmei Si
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
- Tianjin Key Laboratory of Nano-Optoelectronic Display Materials and Components, Tianjin, 301830, China
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Huang J, Wang C, Zhang S, Han X, Feng R, Li Y, Huang X, Wang J. Optimizing nitrogenous organic wastewater treatment through integration of organic capture, anaerobic digestion, and anammox technologies: sustainability and challenges. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27410-6. [PMID: 37261686 DOI: 10.1007/s11356-023-27410-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 04/30/2023] [Indexed: 06/02/2023]
Abstract
With China's recent commitment to reducing carbon emissions and achieving carbon neutrality, anaerobic digestion and anaerobic ammonium oxidation (anammox) have emerged as promising technologies for treating nitrogenous organic wastewater. Anaerobic digestion can convert organic matter into volatile fatty acids (VFAs), methane, and other chemicals, while anammox can efficiently remove nitrogen with minimal energy consumption. This study evaluates the principles and characteristics of enhanced chemical flocculation and bioflocculation, as well as membrane separation, for capturing organic matter. Additionally, the paper evaluates the production of acids and methane from anaerobic digestion, exploring the influence of various factors and the need for control strategies. The features, challenges, and concerns of partial nitrification-anammox (PN/A) and partial denitrification-anammox (PD/A) are also outlined. Finally, an integrated system that combined organic capture, anaerobic digestion, and anammox is proposed as a sustainable and effective solution for treating nitrogenous organic wastewater and recovering energy and resources.
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Affiliation(s)
- Jianming Huang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | - Chunrong Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China.
| | - Shujun Zhang
- Beijing Drainage Group Co. Ltd (BDG), Beijing, 100022, China
| | - Xiaoyu Han
- Beijing Drainage Group Co. Ltd (BDG), Beijing, 100022, China
| | - Rongfei Feng
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | - Yang Li
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | - Xiaoyan Huang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | - Jianbing Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
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3
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Wu Y, Vovers J, Thuan Lu H, Li W, Stevens GW, Mumford KA. Investigation of the extraction of natural alkaloids in Karr reciprocating plate columns. Part I: Fluid dynamic study. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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4
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Simulation and dynamic control of removal phenols from coal gasification wastewater by synergistic extraction. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Zhou Q, Zhou X, Zheng R, Liu Z, Wang J. Application of lead oxide electrodes in wastewater treatment: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150088. [PMID: 34563906 DOI: 10.1016/j.scitotenv.2021.150088] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/29/2021] [Accepted: 08/29/2021] [Indexed: 06/13/2023]
Abstract
Electrochemical oxidation (EO) based on hydroxyl radicals (·OH) generated on lead dioxide has become a typical advanced oxidation process (AOP). Titanium-based lead dioxide electrodes (PbO2/Ti) play an increasingly important role in EO. To further improve the efficiency, the structure and properties of the lead dioxide active surface layer can be modified by doping transition metals, rare earth metals, nonmetals, etc. Here, we compare the common preparation methods of lead dioxide. The EO performance of lead dioxide in wastewater containing dyes, pesticides, drugs, landfill leachate, coal, petrochemicals, etc., is discussed along with their suitable operating conditions. Finally, the factors influencing the contaminant removal kinetics on lead dioxide are systematically analysed.
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Affiliation(s)
- Qingqing Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Xule Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Ruihao Zheng
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Zifeng Liu
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Jiade Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China.
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6
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Yang Z, Zhang Y, Zhu W, Zan X, Zhang L, Liu Y. Effective oxidative degradation of coal gasification wastewater by ozonation: A process study. CHEMOSPHERE 2020; 255:126963. [PMID: 32413797 DOI: 10.1016/j.chemosphere.2020.126963] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 04/23/2020] [Accepted: 05/01/2020] [Indexed: 06/11/2023]
Abstract
Coal gasification wastewater (CGW) has attracted considerable industrial attention because of its high toxicity and poor biodegradability. Ozonation is a promising process for CGW treatment. In this study, the effects of ozone concentration, pH, and ozonation time on CGW treatment were investigated. The results confirmed that CGW was degraded effectively and that the chemical oxygen demand (COD) was reduced from 1057 to 362 mgL-1, utilizing 50 mgL-1 ozone for 90 min. Further, the color of CGW changed from brown to clear and colorless, and the pH decreased from 8.5 to 4.7. Importantly, molds were observed in the oxidized CGW after 14 d at room temperature (23 ± 2 °C), indicating that CGW is significantly biodegradable by ozonation. The CGW components were extracted with three different organic solvents (chloroform, n-hexane, and benzene), and their compositions were analyzed by gas chromatography-mass spectrometry (GC-MS) before and after ozonation. The results proved that considerable amounts of highly toxic refractory compounds in CGW, such as phenolic compounds, polynuclear aromatic hydrocarbons (PAHs), and nitrogenous heterocyclic compounds (NHCs), were degraded to compounds that included olefins, carboxylic acids, and cycloalkanes, or minerals, which are relatively environmentally benign. Moreover, the number of substances in CGW decreased significantly from 127 to 74 after ozonation. Summarily, ozonation is a promising approach for the treatment of highly toxic refractory wastewater, such as CGW.
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Affiliation(s)
- Zhiyong Yang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China; Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Chemical & Environmental Engineering, Xinjiang Institute of Engineering, Urumqi, 830023, China
| | - Yagang Zhang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China; Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Chemical & Environmental Engineering, Xinjiang Institute of Engineering, Urumqi, 830023, China.
| | - Wenjuan Zhu
- Department of Chemical & Environmental Engineering, Xinjiang Institute of Engineering, Urumqi, 830023, China
| | - Xingjie Zan
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Letao Zhang
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China
| | - Yanxia Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China; Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, China
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7
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Effects of Sludge Retention Time on the Performance of Anaerobic Ceramic Membrane Bioreactor Treating High-Strength Phenol Wastewater. ARCHAEA-AN INTERNATIONAL MICROBIOLOGICAL JOURNAL 2020; 2020:8895321. [PMID: 32831644 PMCID: PMC7422917 DOI: 10.1155/2020/8895321] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/29/2020] [Accepted: 06/05/2020] [Indexed: 11/22/2022]
Abstract
Anaerobic ceramic membrane bioreactor (AnCMBR) is an attractive alternative for the treatment of high-strength phenol wastewater, but the effects of sludge retention time (SRT) on the performance and membrane fouling are still unclear. The results indicated that the AnCMBR was successfully employed to treat high-strength wastewater containing 5 g phenol L−1. The removal efficiencies of phenol and chemical oxygen demand (COD) reached over 99.5% and 99%, respectively, with long SRT and short SRT. SRT had no obvious effect on the performance of the AnCMBR treating high-strength phenol wastewater with long time operation. The strong performance robustness of AnCMBR benefited from the enrichment of hydrogenotrophic methanogens and syntrophic phenol-degrading bacteria. However, the decline of SRT led to a more severe membrane fouling in the AnCMBR, which was caused by the small size of sludge flocs and high concentration of protein in the biopolymers. Therefore, this work presented a comprehensive insight to the feasibility and robustness of the AnCMBR for treating high-strength phenol wastewater.
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Walling E, Trémier A, Vaneeckhaute C. A review of mathematical models for composting. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 113:379-394. [PMID: 32580105 DOI: 10.1016/j.wasman.2020.06.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/09/2020] [Accepted: 06/14/2020] [Indexed: 06/11/2023]
Abstract
Composting is a valuable method to treat and valorize organic waste. However, the process is defined by its dynamic nature and governed by a multitude of operating parameters. As such, mathematical modelling of the process offers a powerful tool to simulate and predict the variable outcomes of the process, allowing for its optimization. This can include improving efficiency, lowering costs and reducing environmental impact. To aid with the development of future models, we provide an up to date review and assessment on the state of the art of composting modelling. By reviewing 40 years of literature, this review paints the most complete picture of the field to date. This includes an analysis of trends in composting modelling: looking at the type of systems that are targeted, the aim of the models and the approaches to kinetics and mass and heat transfer. Regarding modelling approaches, we explore the fractionation of both substrates and microorganisms, the biological processes that can be included (disintegration, hydrolysis, uptake and death) and their kinetics (first-order, Monod-type), energy balances (biological generation, convection, conduction) and mass balances. We also provide a review of the results of sensitivity analyses performed on composting models, finding that models are most sensitive to microbial growth and death rates, as well as consumption rates and product yields. In the final portion of the review, we identify, explore, and provide guiding recommendations for work on emerging areas and areas requiring development in composting modelling (volume change, pH, maturation, artificial intelligence, etc.).
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Affiliation(s)
- Eric Walling
- BioEngine - Research Team on Green Process Engineering and Biorefineries, Chemical Engineering Department, Université Laval, 1065 Ave. de la Médecine, Québec, QC G1V 0A6, Canada; CentrEau, Centre de recherche sur l'eau, Université Laval, 1065 Avenue de la Médecine, Québec, QC G1V 0A6, Canada.
| | | | - Céline Vaneeckhaute
- BioEngine - Research Team on Green Process Engineering and Biorefineries, Chemical Engineering Department, Université Laval, 1065 Ave. de la Médecine, Québec, QC G1V 0A6, Canada; CentrEau, Centre de recherche sur l'eau, Université Laval, 1065 Avenue de la Médecine, Québec, QC G1V 0A6, Canada.
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9
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Cui Z, Tian W, Fan C, Guo Q. Novel design and dynamic control of coal pyrolysis wastewater treatment process. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116725] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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10
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Towards the Implementation of Circular Economy in the Wastewater Sector: Challenges and Opportunities. WATER 2020. [DOI: 10.3390/w12051431] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The advancement of science has facilitated increase in the human lifespan, reflected in economic and population growth, which unfortunately leads to increased exploitation of resources. This situation entails not only depletion of resources, but also increases environmental pollution, mainly due to atmospheric emissions, wastewater effluents, and solid wastes. In this scenario, it is compulsory to adopt a paradigm change, as far as the consumption of resources by the population is concerned, to achieve a circular economy. The recovery and reuse of resources are key points, leading to a decrease in the consumption of raw materials, waste reduction, and improvement of energy efficiency. This is the reason why the concept of the circular economy can be applied in any industrial activity, including the wastewater treatment sector. With this in view, this review manuscript focuses on demonstrating the challenges and opportunities in applying a circular economy in the water sector. For example, reclamation and reuse of wastewater to increase water resources, by paying particular attention to the risks for human health, recovery of nutrients, or highly added-value products (e.g., metals and biomolecules among others), valorisation of sewage sludge, and/or recovery of energy. Being aware of this situation, in the European, Union 18 out of 27 countries are already reusing reclaimed wastewater at some level. Moreover, many wastewater treatment plants have reached energy self-sufficiency, producing up to 150% of their energy requirements. Unfortunately, many of the opportunities presented in this work are far from becoming a reality. Still, the first step is always to become aware of the problem and work on optimizing the solution to make it possible.
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11
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Gai H, Chen S, Lin K, Zhang X, Wang C, Xiao M, Huang T, Song H. Conceptual design of energy-saving stripping process for industrial sour water. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2019.12.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Yang LH, Cheng HY, Ding YC, Su SG, Wang B, Zeng R, Sharif HMA, Wang AJ. Enhanced treatment of coal gasification wastewater in a membraneless sleeve-type bioelectrochemical system. Bioelectrochemistry 2019; 129:154-161. [DOI: 10.1016/j.bioelechem.2019.05.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/25/2019] [Accepted: 05/25/2019] [Indexed: 11/28/2022]
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13
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Yang S, Yang Y, Liu Y. The value-added of dual-stage entrained flow gasification and CO2 cycling in biomass-to-gasoline/diesel: Design and techno-economic analysis. Comput Chem Eng 2019. [DOI: 10.1016/j.compchemeng.2019.05.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Chen Y, Xiong K, Jiang M, Lv R. Phase equilibrium measurement, thermodynamics modeling and process simulation for extraction of phenols from coal chemical wastewater with methyl propyl ketone. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.05.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Chen X, Sun X, Wang X, Xu P, Yang C, Lu Q, Wang S. Two-stage air stripping combined with hydrolysis acidification process for coal gasification wastewater pretreatment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 79:2185-2194. [PMID: 31318356 DOI: 10.2166/wst.2019.219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Coal gasification wastewater is mainly from gas washing, condensation and purification processes in the gas furnace with high NH3-N (nitrogen in water in the form of free ammonia (NH3) and ammonium ion (NH4 +)), TN (total nitrogen) and refractory organics content, which will inhibit the subsequent biological treatment. The 'air stripping - hydrolysis acidification - air stripping' process was proposed as the pretreatment for coal gasification wastewater to improve the biodegradability and nitrogen removal, which could reduce the subsequent biological treatment load. The first-stage air stripping process before hydrolysis acidification could achieve a significant removal of NH3-N (97.0%) and volatile phenol (70.0%), reducing the corresponding toxicity on hydrolysis acidification. The group with air stripping had more abundant microbial communities and a more effective organic degradation performance in hydrolysis acidification than that without air stripping. The second-stage air stripping removed NH3-N released from hydrolysis acidification, and significantly reduced the TN concentration in effluent. The whole process achieved a TN removal from 2,000 ± 100 mg/L to 160 ± 80 mg/L, and a total phenols removal from 700 ± 50 mg/L to 80 ±20 mg/L.
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Affiliation(s)
- Xiurong Chen
- Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China and National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies (NELHROWTT), East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Xiaoli Sun
- Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China and National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies (NELHROWTT), East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Xiaoxiao Wang
- Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China and National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies (NELHROWTT), East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Peng Xu
- Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China and National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies (NELHROWTT), East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Chenchen Yang
- Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China and National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies (NELHROWTT), East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Quanling Lu
- Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China and National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies (NELHROWTT), East China University of Science and Technology, Shanghai 200237, China E-mail:
| | - Shanshan Wang
- Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China and National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies (NELHROWTT), East China University of Science and Technology, Shanghai 200237, China E-mail:
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Gui X, Xu W, Cao H, Ning P, Zhang Y, Li Y, Sheng Y. A novel phenol and ammonia recovery process for coal gasification wastewater altering the bacterial community and increasing pollutants removal in anaerobic/anoxic/aerobic system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 661:203-211. [PMID: 30669053 DOI: 10.1016/j.scitotenv.2019.01.126] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 01/11/2019] [Accepted: 01/11/2019] [Indexed: 06/09/2023]
Abstract
Coal gasification wastewater (CGWW) is a typical toxic and refractory industrial wastewater. Here, a novel phenol and ammonia recovery process (IPE) was employed for CGWW pretreatment, and the coupled system assemble by the IPE process with A2/O system (IPE-A2/O) were operated to enhance the treatment performance of CGWW. The results showed that the IPE pre-treated effluent had a higher BOD5/COD ratio and lower refractory compounds compared to a typical process (MIBK). Subsequent A2/O biological treatment indicated that the A2/O-p system (A2/O system followed IPE process) obtained a higher average COD removal of 92% compared to 87.7% of the control (A2/O-m, A2/O system followed MIBK). The GC-MS analysis suggested that the content of alkanes in the IPE-A2/O effluent was lower than that of the MIBK-A2/O. The high-throughput sequencing revealed Levilinea, Alcaligenes, Acinetobacter, Thauera and Thiobacillus were the core genera in A2/O system. The genera Alcaligenes, Acinetobacter, Thauera and Thiobacillus in the degrading consortium were enriched in the A2/O-p system, leading to increased removals of organic pollutants and TN. These results suggested that the IPE process was a feasible pretreatment method, and the coupled IPE-A2/O system was an alternative technique for treating CGWW.
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Affiliation(s)
- Xuefei Gui
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China; CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Weichao Xu
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China
| | - Hongbin Cao
- CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China; National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Pengge Ning
- CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China.
| | - Yuxiu Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China.
| | - Yuping Li
- CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yuxing Sheng
- CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China; National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
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17
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Li K, Wang Q, Fang M, Shaikh AR, Xie G, Luo Z. Techno-Economic Analysis of a Coal Staged Conversion Polygeneration System for Power and Chemicals Production. Chem Eng Technol 2018. [DOI: 10.1002/ceat.201800338] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Kaikun Li
- Zhejiang University; State Key Laboratory of Clean Energy Utilization; No. 38 Zheda Road 310027 Hangzhou China
| | - Qinhui Wang
- Zhejiang University; State Key Laboratory of Clean Energy Utilization; No. 38 Zheda Road 310027 Hangzhou China
| | - Mengxiang Fang
- Zhejiang University; State Key Laboratory of Clean Energy Utilization; No. 38 Zheda Road 310027 Hangzhou China
| | - Abdul Rahim Shaikh
- Zhejiang University; State Key Laboratory of Clean Energy Utilization; No. 38 Zheda Road 310027 Hangzhou China
| | - Guilin Xie
- Zhejiang University; State Key Laboratory of Clean Energy Utilization; No. 38 Zheda Road 310027 Hangzhou China
| | - Zhongyang Luo
- Zhejiang University; State Key Laboratory of Clean Energy Utilization; No. 38 Zheda Road 310027 Hangzhou China
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18
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Zhu H, Han Y, Xu C, Han H, Ma W. Overview of the state of the art of processes and technical bottlenecks for coal gasification wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 637-638:1108-1126. [PMID: 29801205 DOI: 10.1016/j.scitotenv.2018.05.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 05/04/2018] [Accepted: 05/04/2018] [Indexed: 06/08/2023]
Abstract
CGWW is major waste stream resulting from a number of activities of the low/medium temperature gasification unit that occurs during the production of natural gas. The resulting effluent contains a broad spectrum of organic and inorganic contaminants and exerts a negative influence on the environment, mainly due to the presence of toxic and refractory compounds. So far, various technologies have been applied for treatment of CGWW, while few reviews are available in the literature. Thus, this review attempts to offer a comprehensive picture about CGWW. An overview about pretreatment, biological and advanced processes for treatment of CGWW is presented, and the degradation mechanism of toxic and refractory pollutants is also elaborated. Technical bottlenecks existing in the operation of coal chemical industries, including foam proliferation, odors and biotoxicity risk, are detailed analyzed. Finally, the prospects of treatment for CGWW are discussed based on the concept of "wastewater is money". The review can be provided as an effective technical support for the construction and operation of coal gasification industries.
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Affiliation(s)
- Hao Zhu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yuxing Han
- School of Engineering, South China Agriculture University, Guangzhou 510642, China
| | - Chunyan Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Hongjun Han
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Weiwei Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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19
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Chen Y, Xiong K, Zhou S, Wang H, Li L. Liquid–Liquid Equilibrium of Ternary Systems of Methyl Isobutyl Ketone + o-Cresol + Water at 298.2, 313.2 and 323.2 K. J SOLUTION CHEM 2017. [DOI: 10.1007/s10953-017-0698-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Wang W, Yang K, Sierra JM, Zhang X, Yuan S, Hu Z. Potential impact of methyl isobutyl ketone (MIBK) on phenols degradation in an UASB reactor and its degradation properties. JOURNAL OF HAZARDOUS MATERIALS 2017; 333:73-79. [PMID: 28342357 DOI: 10.1016/j.jhazmat.2017.03.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 02/24/2017] [Accepted: 03/14/2017] [Indexed: 06/06/2023]
Abstract
Methyl isobutyl ketone (MIBK) as a solvent is extensively used for the phenols extraction from the wastewater, so it is unavoidable to expose in the effluent due to the solubility and leakage problem. The present study evaluated the impact of MIBK on phenols degradation in an UASB reactor and analyzed its degradation properties. The results indicated that the continuous dosing (0.1gL-1) and impact (10gL-1) of MIBK had limited effect on phenols removal (1-2% reduction) in the UASB reactor, but the specific methanogenic activity (SMA) values of sludge decreased by 45-75% after MIBK exposure. Anaerobic degradation rate of MIBK fitted well to a pseudo-first-order kinetic equation with respect to the initial concentration of 35mgL-1 (k=0.0115h-1, R2=0.9664). Furthermore, the relative methane generation rate constants of MIBK were 0.00816, 0.00613, 0.00273, and 0.00207d-1 at the initial concentrations of 0.1, 0.5, 5, and 10gL-1, respectively. MIBK showed higher inhibitory effect on the methanogenesis than on phenols degradation. This study pointed out that the industrial installations should consider the influence of solvent on anaerobic treatment of phenolic wastewater.
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Affiliation(s)
- Wei Wang
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China.
| | - Kai Yang
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China
| | - Julian Muñoz Sierra
- Section Sanitary Engineering, Department of Water Management, Delft University of Technology, Delft 2828CN, The Netherlands
| | - Xuedong Zhang
- Section Sanitary Engineering, Department of Water Management, Delft University of Technology, Delft 2828CN, The Netherlands
| | - Shoujun Yuan
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China
| | - Zhenhu Hu
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China.
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21
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Lu H, Wang J, Yu J, Wu Y, Wang T, Bao Y, Ma D, Hao H. Phase equilibria for the pseudo-ternary system (NaCl + Na 2 SO 4 + H 2 O) of coal gasification wastewater at T = (268.15 to 373.15) K. Chin J Chem Eng 2017. [DOI: 10.1016/j.cjche.2016.08.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Lv R, Li L, Wang H, Chen Y. Phase Equilibrium for Phenol Extraction from Aqueous Solution with 2-Pentanone at Different Temperatures. J SOLUTION CHEM 2016. [DOI: 10.1007/s10953-016-0517-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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Measurement and Correlation of Liquid−Liquid Equilibria for the Ternary Methyl Isobutyl Ketone + Phenol + Water System at (333.15, 343.15 and 353.15) K under Atmospheric Pressure. J SOLUTION CHEM 2016. [DOI: 10.1007/s10953-016-0472-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Liquid–Liquid Equilibria for the Methyl Tert-Butyl Ketone + Phenol + Water Ternary System at 298.15, 313.15 and 323.15 K. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0382-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Ji Q, Tabassum S, Yu G, Chu C, Zhang Z. Determination of biological removal of recalcitrant organic contaminants in coal gasification waste water. ENVIRONMENTAL TECHNOLOGY 2015; 36:2815-2824. [PMID: 25951900 DOI: 10.1080/09593330.2015.1049215] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 05/03/2015] [Indexed: 06/04/2023]
Abstract
Coal gasification waste water treatment needed a sustainable and affordable plan to eliminate the organic contaminants in order to lower the potential environmental and human health risk. In this paper, a laboratory-scale anaerobic-aerobic intermittent system carried out 66 operational cycles together for the treatment of coal gasification waste water and the removal capacity of each organic pollutant. Contaminants included phenols, carboxylic acids, long-chain hydrocarbons, and heterocyclic compounds, wherein the relative content of phenol is up to 57.86%. The long-term removal of 77 organic contaminants was evaluated at different hydraulic retention time (anaerobic24 h + aerobic48 h and anaerobic48 h +aerobic48 h). Contaminant removal ranged from no measurable removal to near-complete removal with effluent concentrations below the detection limit. Contaminant removals followed one of four trends: steady-state removal throughout, increasing removal to steady state (acclimation), decreasing removal, and no removal. Organic degradation and transformation in the reaction were analysed by gas chromatography/mass spectrometry technology.
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Affiliation(s)
- Qinhong Ji
- a School of Environmental Science and Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Salma Tabassum
- a School of Environmental Science and Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Guangxin Yu
- b New Energy Research Center, China National Offshore Oil Corporation Research Institute , Beijing 100028 , People's Republic of China
| | - Chunfeng Chu
- a School of Environmental Science and Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Zhenjia Zhang
- a School of Environmental Science and Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
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26
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Tabassum S, Wang Y, Zhang X, Zhang Z. Novel Mass Bio System (MBS) and its potential application in advanced treatment of coal gasification wastewater. RSC Adv 2015. [DOI: 10.1039/c5ra11506j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
A Novel Mass Bio System (MBS), a suspended biologically activated carbon granular carrier cubic particle with 2–5 mm side length and 1.02–1.08 specific gravity was developed for advanced treatment of coal gasification wastewater.
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Affiliation(s)
- Salma Tabassum
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Yun Wang
- State Key Laboratory of Microbial Metabolism
- School of Life Sciences & Biotechnology
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Xiaojun Zhang
- State Key Laboratory of Microbial Metabolism
- School of Life Sciences & Biotechnology
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Zhenjia Zhang
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
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27
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Ji Q, Tabassum S, Yu G, Chu C, Zhang Z. A high efficiency biological system for treatment of coal gasification wastewater – a key in-depth technological research. RSC Adv 2015. [DOI: 10.1039/c5ra04215a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Wastewater treatment technology with a simple processing unit, easy management, low energy consumption, low sludge production and a cost of 0.135 $ per m3.
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Affiliation(s)
- Qinhong Ji
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Salma Tabassum
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Guangxin Yu
- New Energy Research Center
- China National Offshore Oil Corporation Research Institute
- Beijing 100027
- China
| | - Chunfeng Chu
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Zhenjia Zhang
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
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28
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li C, Tabassum S, Zhang Z. A novel environmental biotechnological aerobic process (BioAX) for the treatment of coal gasification wastewater. RSC Adv 2014. [DOI: 10.1039/c4ra06030j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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29
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Hou B, Han H, Jia S, Zhuang H, Zhao Q, Xu P. Effect of alkalinity on nitrite accumulation in treatment of coal chemical industry wastewater using moving bed biofilm reactor. J Environ Sci (China) 2014; 26:1014-1022. [PMID: 25079631 DOI: 10.1016/s1001-0742(13)60517-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Revised: 10/31/2013] [Accepted: 11/07/2013] [Indexed: 06/03/2023]
Abstract
Nitrogen removal via nitrite (the nitrite pathway) is more suitable for carbon-limited industrial wastewater. Partial nitrification to nitrite is the primary step to achieve nitrogen removal via nitrite. The effect of alkalinity on nitrite accumulation in a continuous process was investigated by progressively increasing the alkalinity dosage ratio (amount of alkalinity to ammonia ratio, mol/mol). There is a close relationship among alkalinity, pH and the state of matter present in aqueous solution. When alkalinity was insufficient (compared to the theoretical alkalinity amount), ammonia removal efficiency increased first and then decreased at each alkalinity dosage ratio, with an abrupt removal efficiency peak. Generally, ammonia removal efficiency rose with increasing alkalinity dosage ratio. Ammonia removal efficiency reached to 88% from 23% when alkalinity addition was sufficient. Nitrite accumulation could be achieved by inhibiting nitrite oxidizing bacteria (NOB) by free ammonia (FA) in the early period and free nitrous acid in the later period of nitrification when alkalinity was not adequate. Only FA worked to inhibit the activity of NOB when alkalinity addition was sufficient.
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Affiliation(s)
- Baolin Hou
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Hongjun Han
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Shengyong Jia
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Haifeng Zhuang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qian Zhao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Peng Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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30
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Li C, Tabassum S, Zhang Z. An advanced anaerobic expanded granular sludge bed (AnaEG) for the treatment of coal gasification wastewater. RSC Adv 2014. [DOI: 10.1039/c4ra08042d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A state-of-the-art advanced anaerobic expanded granular sludge bed (AnaEG) was developed for the anaerobic treatment of coal gasification wastewater (typical industrial wastewater with poor biodegradability and high toxicity).
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Affiliation(s)
- Chunjie Li
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240, China
| | - Salma Tabassum
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240, China
| | - Zhenjia Zhang
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240, China
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31
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Fang F, Han H, Zhao Q, Xu C, Zhang L. Bioaugmentation of biological contact oxidation reactor (BCOR) with phenol-degrading bacteria for coal gasification wastewater (CGW) treatment. BIORESOURCE TECHNOLOGY 2013; 150:314-320. [PMID: 24177165 DOI: 10.1016/j.biortech.2013.09.119] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/06/2013] [Accepted: 09/08/2013] [Indexed: 06/02/2023]
Abstract
This study was conducted to evaluate the performance of the biological contact oxidation reactor (BCOR) treating coal gasification wastewater (CGW) after augmented with phenol degrading bacteria (PDB). The PDB were isolated with phenol, 4-methyl phenol, 3,5-dimethyl phenol and resorcinol as carbon resources. Much of the refractory phenolic compounds were converted into easily-biodegradable compounds in spite of low TOC removal. The bioaugmentation with PDB significantly enhanced the removal of COD, total phenols (TP) and NH3-N, with efficiencies from 58% to 78%, 66% to 80%, and 5% to 25%, respectively. In addition, the augmented BCOR exhibited strong recovery capability in TP and COD removal while recovery of NH3-N removal needed longer time. Microbial community analysis revealed that the PDB presented as dominant populations in the bacteria consortia, which in turn determined the overall performance of the system.
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Affiliation(s)
- Fang Fang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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32
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Yang C, Yang S, Qian Y, Guo J, Chen Y. Simulation and Operation Cost Estimate for Phenol Extraction and Solvent Recovery Process of Coal-Gasification Wastewater. Ind Eng Chem Res 2013. [DOI: 10.1021/ie4007535] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chufen Yang
- Faculty of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, PR China
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Shiying Yang
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Yu Qian
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Jianwei Guo
- Faculty of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Yun Chen
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510640, PR China
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33
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Wang W, Han H. Recovery strategies for tackling the impact of phenolic compounds in a UASB reactor treating coal gasification wastewater. BIORESOURCE TECHNOLOGY 2012; 103:95-100. [PMID: 22033369 DOI: 10.1016/j.biortech.2011.10.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Revised: 09/30/2011] [Accepted: 10/01/2011] [Indexed: 05/31/2023]
Abstract
The impact of phenolic compounds (around 3.2 g/L) resulted in a completely failed performance in a mesophilic UASB reactor treating coal gasification wastewater. The recovery strategies, including extension of HRT, dilution, oxygen-limited aeration, and addition of powdered activated carbon were evaluated in batch tests, in order to obtain the most appropriate way for the quick recovery of the failed reactor performance. Results indicated that addition of powdered activated carbon and oxygen-limited aeration were the best recovery strategies in the batch tests. In the UASB reactor, addition of powdered activated carbon of 1 g/L shortened the recovery time from 25 to 9 days and oxygen-limited aeration of 0-0.5 mgO2/L reduced the recovery time to 17 days. Reduction of bioavailable concentration of phenolic compounds and recovery of sludge activity were the decisive factors for the recovery strategies to tackle the impact of phenolic compounds in anaerobic treatment of coal gasification wastewater.
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Affiliation(s)
- Wei Wang
- School of Civil Engineering, Hefei University of Technology, Hefei 230009, China.
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34
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Removal of ammonia from aqueous solutions by catalytic oxidation with copper-based rare earth composite metal materials: catalytic performance, characterization, and cytotoxicity evaluation. J RARE EARTH 2011. [DOI: 10.1016/s1002-0721(10)60512-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Wang W, Han H, Yuan M, Li H, Fang F, Wang K. Treatment of coal gasification wastewater by a two-continuous UASB system with step-feed for COD and phenols removal. BIORESOURCE TECHNOLOGY 2011; 102:5454-5460. [PMID: 21093254 DOI: 10.1016/j.biortech.2010.10.019] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 10/02/2010] [Accepted: 10/06/2010] [Indexed: 05/30/2023]
Abstract
A two-continuous mesophilic (37 ± 2°C) UASB system with step-feed was investigated as an attractive optimization strategy for enhancing COD and total phenols removal of the system and improving aerobic biodegradability of real coal gasification wastewater. Through the step-feed period, the maximum removal efficiencies of COD and total phenols reached 55-60% and 58-63% respectively in the system, at an influent flow distribution ratio of 0.2 and influent COD concentration of 2500 mg/L; the corresponding efficiencies were at low levels of 45-50% and 43-50% respectively at total HRT of 48 h during the single-feed period. The maximum specific methanogenic activity and substrate utilization rate were 592 ± 16 mg COD-CH(4)/(g VSS d) and 89 ± 12 mg phenol/(g VSS d) during the step-feed operation. After the anaerobic digestion with step-feed, the aerobic effluent COD concentration decreased from 270 ± 9 to 215 ± 10 mg/L. The results suggested that step-feed enhanced the degradation of refractory organics in the second reactor.
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Affiliation(s)
- Wei Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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