Efficiency and reliability of sewage purification in long-term exploitation of the municipal wastewater treatment plant with activated sludge and hydroponic system

• Autorzy: Jóźwiakowska Karolina , Marzec Michał

Identyfikatory

DOI

10.24425/aep.2020.134533

• Języki publikacji: EN

Abstrakty

EN

The aim of the work was to analyze the efficiency and reliability of pollutants removal (total suspended solids – TSS, BOD₅, COD) in a collective wastewater treatment plant with activated sludge and hydroponic lagoon during its long term operation. The tested object was designed to treat wastewater inflowing through the sewerage system and wastewater delivered by the septic truck. The projected capacity of the treatment plant was 1200 m³d^-1. The technological system for wastewater treatment consisted of a mechanical part, a flowing biological reactor working according to the BARDENPHO process, a secondary settling tank and a hydroponic lagoon. The efficiency and reliability of pollutants removal in the analyzed treatment plant were assessed on the basis of the data concerning influent and effluent wastewater collected during the years 2011–2018. On the basis of the measurements results, there were determined characteristic values of the selected pollution indicators in wastewater and the average efficiency of pollutants removal. The technological reliability of the wastewater treatment plant was assessed for the basic pollution parameters (BOD₅, COD, TSS) in accordance with the elements of the Weibull’s reliability theory, with regard to normative values of the indicators specified in the Regulation of the Minister of Environment. The analysis was carried out using the Statistica 13.1 software. It was proved that in the wastewater treatment plant with an activated sludge and hydroponic lagoon the level of organic pollutants removal expressed by BOD₅ was on average 99.5%, COD – 98.1% and TSS – 99.4%. The technological reliability of the system was 100% in terms of the removal of pollutants from the basic group, which means that during the long term operation (8 years) it provided failure-free operation and guaranteed the fulfillment of the requirements that can be found in the Polish law regulations concerning the analyzed pollutants.

Słowa kluczowe

EN

wastewater treatment; activated sludge; hydroponic system; efficiency of operation; reliability of operation; Weibull’s reliability theory

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2020
• Tom: Vol. 46, no. 3
• Strony: 30--41
• Opis fizyczny: Bibliogr. 37 poz., fot., rys., tab., wykr.

Twórcy

autor

Jóźwiakowska Karolina

• Student, Faculty of Civil and Environmental Engineering, Warsaw University of Life Sciences, Poland

autor

Marzec Michał

• Department of Environmental Engineering and Geodesy, University of Life Sciences in Lublin, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).