RELIABILITY OF A COLLECTIVE WASTEWATER TREATMENT PLANT
Piotr Bugajski 1  
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Department of Sanitary Engineering and Water Management, Faculty of Environmental Engineering and Land Surveying, H. Kołłątaja University of Agriculture in Kraków, Al. Mickiewicza 24/28, 30-059 Kraków, Poland
CORRESPONDING AUTHOR
Piotr Bugajski   

Department of Sanitary Engineering and Water Management, University of Agriculture of Krakow, Mickiewicza Ave 24/28, 30-059 Krakow, Poland
Publish date: 2016-09-30
 
J. Ecol. Eng. 2016; 17(4):143–147
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ABSTRACT
The paper discusses technological reliability of a collective wastewater treatment plant (WTP). The WTP capacity expressed as population equivalents (PE) was 22,500. The research was conducted in 2013 and 2014 and it involved the collection and physical and chemical analysis of 101 samples of raw and treated sewage. Reliability analysis was based on Weibull reliability theory. Reliability of retaining organic compounds defined as BOD5 was 68%, and for biogenic compounds, such as total nitrogen and total phosphorus, it was 92% and 88%, respectively.