ORIGINAL RESEARCH
Variability of COD and TKN Fractions of Combined Wastewater
M. Zawilski, A. Brzezińska
 
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Department of Environmental Engineering, Technical University of Łódź, Politechniki 6, 93-950 Łódź, Poland
 
Pol. J. Environ. Stud. 2009;18(3):501–505
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ABSTRACT
Our paper analyzes the quality of combined wastewater in the aspect of its biological treatment. Fractions of chemical oxygen demand (COD) and total Kjeldahl nitrogen (TKN) in the inflow to the Group Wastewater Treatment Plant in Łódź were determined. The research revealed a distinct increase of inert fractions during wet weather caused by an increasing portion of contaminants bound with suspended solids.
eISSN:2083-5906
ISSN:1230-1485