Szukana fraza: [Abstract = "The paper presents results of research on the use of the relationship between indicators of organic pollutants to assess the suitability of the distribution of biochemical treatment. The coefficients were determined for wastewater after successive treatment processes. Changes in the value ratios of COD\/BOD and BOD\/TOC in WWTP in Zielona Gora were typical for the correct cleaning process in the mechanical\-biological system."]

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