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Reliability and efficiency of pollution removal during long-term operation of a one-stage constructed wetland system with horizontal flow
Abstract
The paper presents the results of a study of the reliability and efficiency of pollutant removal during long term operation of a one-stage constructed wetland system with horizontal flow. The flow rate of the wastewater treatment plant was 1.2 m3·d-1 during the research period. Physical and chemical analyses of raw wastewater and treated effluent were carried out in the years 1997–2010 (14 years). During this study period, 56 series of analyses were performed and 112 wastewater samples were collected. The average efficiencies of BOD5 (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand) and TSS (Total Suspended Solids) removal in the investigated facility during the 14 years of its operation were respectively: 84.7%, 80.9%, and 62.4%. The average values of these parameters in the treated wastewater were significantly lower than the values deemed acceptable by relevant regulations in Poland. The reliabilities of the wastewater treatment plant, based on the Weibull reliability theory for acceptable values of pollution parameters in the effluent of the treatment plant, were as follows: BOD5 – 92%, COD – 98%, TSS – 90%. The conducted analysis showed that the operational reliability of the one-stage horizontal subsurface flow constructed wetland (HSFCW) over the operation period was insufficient according to the Polish standards. Improvement of the reliability of the analyzed system by introduction of additional purification elements, such as irrigated biological beds or a constructed wetland with vertical wastewater flow, was recommended.
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Authors (10)
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Krzysztof Jóźwiakowski dr hab
- University of Life Sciences in Lublin, Department of Environmental Engineering and Geodesy
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Piotr Bugajski
- b University of Agriculture in Kraków, Department of Sanitary Engineering and Water Management,
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Zbigniew Mucha
- Cracow University of Technology cInstitute of Water Supply and Environmental Protection
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Włodzimierz Wójcik
- Krosno State College, Department of Environmental Engineering
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Andrzej Jucherski dr hab.inż
- Institute of Technology and Life Sciences in Falenty, Mountain Centre of Studies and Implementations in Tylicz,
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Maria Nastawny
- Institute of Technology and Life Sciences in Falenty, Mountain Centre of Studies and Implementations in Tylicz,
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Tadeusz Siwiec
- Warsaw University of Live Sciences Department of Civil Engineering
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Andrzej Mazur
- University of Life Sciences in Lublin, Department of Environmental Engineering and Geodesy
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Radmir Obroślak
- University of Life Sciences in Lublin, Department of Environmental Engineering and Geodesy
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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SEPARATION AND PURIFICATION TECHNOLOGY
no. 187,
pages 60 - 66,
ISSN: 1383-5866 - Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Jóźwiakowski K., Bugajski P., Mucha Z., Wójcik W., Jucherski A., Nastawny M., Siwiec T., Mazur A., Obroślak R., Gajewska M.: Reliability and efficiency of pollution removal during long-term operation of a one-stage constructed wetland system with horizontal flow// SEPARATION AND PURIFICATION TECHNOLOGY. -Vol. 187 , (2017), s.60-66
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.seppur.2017.06.043
- Verified by:
- Gdańsk University of Technology
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