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REMOVAL OF BIOLOGICALLY ACTIVE SUBSTANCES DURING MECHANICAL-BIOLOGICAL WASTEWATER TREATMENT
 
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Instytut Inżynierii Wody i Ścieków, Konarskiego 18, 44-100 Gliwice
 
 
Publication date: 2016-12-01
 
 
Corresponding author
Gabriela Agnieszka Kamińska   

Instytut Inżynierii Wody i Ścieków, Konarskiego 18, 44-100 Gliwice
 
 
Inż. Ekolog. 2016; 50:201–209
 
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ABSTRACT
This study presents the results of monitoring some of the priority emerging substances (anthracene, benzo[a]pyrene, octylphenol, nonylphenol) in raw, primary treated and secondary treated wastewater from 3 WWTPs located in Silesia. The assay procedure of the compounds included the separation of substances from sewage samples by solid phase extraction and chromatographic analysis with GC-MS. Based on calculated concentration of given compounds, their total removal degree was determined. Among studied compounds the highest concentration in raw sewage was reported for anthracene and benzo[a]pyrene, while concentration of nonylphenol and octylphenol was 15 times lower. This trend was observed for all three studied WWTPs. It was also found that wastewater from the WWTPs of highest capacity was about 2 times higher in relation to the wastewater collected from smaller plants. The total removal efficiency of the studied compounds during two stage treatment was in the range of 17.5 to 100%.