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Elmansour TE, Mandi L, Hejjaj A, Ouazzani N. Nutrients' behavior and removal in an activated sludge system receiving Olive Mill Wastewater. J Environ Manage 2022; 305:114254. [PMID: 34972048 DOI: 10.1016/j.jenvman.2021.114254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 11/09/2021] [Accepted: 12/05/2021] [Indexed: 06/14/2023]
Abstract
This work aims to monitor inorganic nutrients (phosphorus and ammonium) behavior during the injection of Olive Mill Wastewater (OMWW) in an activated sludge process. The system was fed firstly with urban wastewater (UWW) and was alimented after its stabilization with OMWW (at 0.1% (v/v) and 1%) for 100 days. Total polyphenols, chemical oxygen demand (CODT), nutrients, and biomass behavior against OMWW injection were investigated. The results showed a satisfactory biomass growth of 7.12 gMLVSS.L-1 and a high microbial activity of 21.88 mg O2.gMLVSS-1.h-1. An overall removal reached 90%, 92%, 59% and 93% respectively for, CODT, total polyphenols, PO43- and NH4+. Adding OMWW at 1% seems to improve the nutrients elimination, especially phosphorus by the biological process probably though bringing more biodegradable organics. The chemical processes (precipitation/complexation) could also be involved in phosphorus removal, due to the OMWW wealth on salts elements such as calcium.
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Affiliation(s)
- T E Elmansour
- National Center for Studies and Research on Water and Energy (CNEREE), Cadi Ayyad University, P. O. Box 511, 40000, Marrakech, Morocco; Laboratory of Water, Biodiversity and Climate Change, Faculty of Sciences Semlalia, Cadi Ayyad University, P. O. Box 2390, 40000, Marrakech, Morocco
| | - L Mandi
- National Center for Studies and Research on Water and Energy (CNEREE), Cadi Ayyad University, P. O. Box 511, 40000, Marrakech, Morocco; Laboratory of Water, Biodiversity and Climate Change, Faculty of Sciences Semlalia, Cadi Ayyad University, P. O. Box 2390, 40000, Marrakech, Morocco
| | - A Hejjaj
- National Center for Studies and Research on Water and Energy (CNEREE), Cadi Ayyad University, P. O. Box 511, 40000, Marrakech, Morocco; Laboratory of Water, Biodiversity and Climate Change, Faculty of Sciences Semlalia, Cadi Ayyad University, P. O. Box 2390, 40000, Marrakech, Morocco
| | - N Ouazzani
- National Center for Studies and Research on Water and Energy (CNEREE), Cadi Ayyad University, P. O. Box 511, 40000, Marrakech, Morocco; Laboratory of Water, Biodiversity and Climate Change, Faculty of Sciences Semlalia, Cadi Ayyad University, P. O. Box 2390, 40000, Marrakech, Morocco.
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