Szukana fraza: [Abstract = The results of COD fraction in the raw wastewater were compared with data received in the ASM models. Methodology for determining the COD fraction was based on the guidelines ATV \- A 131. During the research following fractions were determined\: particulate slowly biodegradable substrates \(Xs\), soluble readily biodegradable substrates \(Ss\), inert particulate organic material \(Xr\) and inert soluble organic material \(Sr\).]