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Zdybel J, Karamon J, Kłapeć T, Włodarczyk-Ramus M, Różycki M, Bilska-Zając E, Kominek A, Cencek T. Negative effect of flocculant (cationic acrylamide) on detectability of the nematode eggs in sewage sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 231:905-908. [PMID: 30423545 DOI: 10.1016/j.jenvman.2018.10.105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/05/2018] [Accepted: 10/28/2018] [Indexed: 06/09/2023]
Abstract
The use of sewage sludge in agriculture brings the risk of microbiological and parasitological contamination of soil, ground and surface water, as well as cultivated plants. Therefore prior the application to the soil, sewage sludge must be examined, among others, for the presence of live eggs of intestinal parasites. However, the efficiency of commonly used for this purpose parasitological methods is not satisfactory. This is probably due to the presence of flocculants in the sediments used in the dehydration process. The objective of the study was analysis of the effect of flocculant (cationic acrylamide) on the possibilities of isolation of parasite eggs from dehydrated sewage sludge. For this purpose 10 samples of sewage sludge were prepared: 5 containing flocculant and 5 without flocculant. Samples were tested by flotation method according to Quinn. From sewage sludge free of flocculant, 67.8 eggs were isolated, on average, whereas from sludge containing flocculant - only 2.8 eggs. The experiments confirmed that the isolation of eggs from sewage sludge containing flocculant (cationic acrylamide) is much more difficult than from sludge free from this substance and therefore the simple parasitological methods should not be used to examine the dehydrated sewage sludge.
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Affiliation(s)
- Jolanta Zdybel
- Department of Parasitology and Invasive Diseases, National Veterinary Research Institute in Puławy, Al. Partyzantów 57, 24-100, Puławy, Poland.
| | - Jacek Karamon
- Department of Parasitology and Invasive Diseases, National Veterinary Research Institute in Puławy, Al. Partyzantów 57, 24-100, Puławy, Poland
| | - Teresa Kłapeć
- Department of Biological Health Hazards and Parasitology, Institute of Rural Health, Jaczewskiego 2, 20-090, Lublin, Poland
| | - Magdalena Włodarczyk-Ramus
- Department of Parasitology and Invasive Diseases, National Veterinary Research Institute in Puławy, Al. Partyzantów 57, 24-100, Puławy, Poland
| | - Mirosław Różycki
- Department of Parasitology and Invasive Diseases, National Veterinary Research Institute in Puławy, Al. Partyzantów 57, 24-100, Puławy, Poland
| | - Ewa Bilska-Zając
- Department of Parasitology and Invasive Diseases, National Veterinary Research Institute in Puławy, Al. Partyzantów 57, 24-100, Puławy, Poland
| | - Aleksandra Kominek
- Department of Parasitology and Invasive Diseases, National Veterinary Research Institute in Puławy, Al. Partyzantów 57, 24-100, Puławy, Poland
| | - Tomasz Cencek
- Department of Parasitology and Invasive Diseases, National Veterinary Research Institute in Puławy, Al. Partyzantów 57, 24-100, Puławy, Poland
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Fulazzaky MA. Calculation of the release of total organic matter and total mineral using the hydrodynamic equations applied to palm oil mill effluent treatment by cascaded anaerobic ponds. Bioprocess Biosyst Eng 2012; 36:11-21. [PMID: 22622964 DOI: 10.1007/s00449-012-0756-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 05/07/2012] [Indexed: 11/28/2022]
Abstract
Anaerobic treatment processes to remove organic matter from palm oil mill effluent (POME) have been used widely in Malaysia. Still the amounts of total organic and total mineral released from POME that may cause degradation of the receiving environment need to be verified. This paper proposes the use of the hydrodynamic equations to estimate performance of the cascaded anaerobic ponds (CAP) and to calculate amounts of total organic matter and total mineral released from POME. The CAP efficiencies to remove biochemical oxygen demands, chemical oxygen demands, total solids and volatile solids (VS) as high as 94.5, 93.6, 96.3 and 98.2 %, respectively, are estimated. The amounts of total organic matter and total mineral as high as 538 kg VS/day and 895 kg FS/day, respectively, released from POME to the receiving water are calculated. The implication of the proposed hydrodynamic equations contributes to more versatile environmental assessment techniques, sometimes replacing laboratory analysis.
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Affiliation(s)
- Mohamad Ali Fulazzaky
- Institute of Environmental and Water Resource Management, Water Research Alliance, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Bahru, Malaysia.
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