Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assessment of wastewater ecotoxicity in a large hybrid sewer system in Lodz (Poland)
Municipal wastewater may contain toxic substances that have a negative impact on biological treatment processes and receiving waters. This paper presents the wastewater toxicity test results from the Lodz hybrid sewage system. Wastewater is discharged to surface waters through a treatment plant, but also during wet weather, partially without treatment by combined sewer overflows. The research was carried out using the ToxTrakTM method with the use of the microbial community of activated sludge from the wastewater treatment plant in Lodz. The median toxicity, expressed as the degree of inhibition, ranged from 16.0% to 30.7%, but sometimes exceeded 50%. Higher toxicity was observed in wet weather than in dry weather. Seasonal variability was found but typical daily variability was not observed. In the case of sewage samples with the degree of inhibition above 40%, a significant correlation was found with chromium concentration and non-ionic surfactants (Pearson’s coefficient correlation above 0.7).
Assessment of wastewater ecotoxicity in a large hybrid sewer system in Lodz (Poland)
Municipal wastewater may contain toxic substances that have a negative impact on biological treatment processes and receiving waters. This paper presents the wastewater toxicity test results from the Lodz hybrid sewage system. Wastewater is discharged to surface waters through a treatment plant, but also during wet weather, partially without treatment by combined sewer overflows. The research was carried out using the ToxTrakTM method with the use of the microbial community of activated sludge from the wastewater treatment plant in Lodz. The median toxicity, expressed as the degree of inhibition, ranged from 16.0% to 30.7%, but sometimes exceeded 50%. Higher toxicity was observed in wet weather than in dry weather. Seasonal variability was found but typical daily variability was not observed. In the case of sewage samples with the degree of inhibition above 40%, a significant correlation was found with chromium concentration and non-ionic surfactants (Pearson’s coefficient correlation above 0.7).
Assessment of wastewater ecotoxicity in a large hybrid sewer system in Lodz (Poland)
Sakson, Grazyna (Autor:in) / Brzezinska, Agnieszka (Autor:in) / Olejnik, Dorota (Autor:in)
Urban Water Journal ; 21 ; 1071-1081
20.10.2024
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| DOAJ | 2023
Analysis of Green Infrastructure in Lodz, Poland
| British Library Online Contents | 2015
Analysis of Green Infrastructure in Lodz, Poland
| ASCE | 2014
Analysis of Green Infrastructure in Lodz, Poland
| Online Contents | 2015
The Socio-spatial Restructuring of Lódz, Poland
| Online Contents | 2011