Summary:

mechanical-biological sewage treatment plat type ECOLO-CHEF located in commune Spytkowice. The object with project in flow sewers 300 m³·d^-1, working on method of low loud active sludge with oxygen stabilization of excessive sediment. Including of sewage-system in commune Spytkowice take 12,4 km. With sewagesystem of using 1303 residents. Actual percent sewage-system is very small and take 13,8%. The research included sewers in flow to sewage treatment plant and clean sewers out flow in river from 01.01.2005 to 31.12.2005 years. The opinion of efficiency of sewage treatment plant matter went to reduction of five choice indexes of pollution i.e. BOD₅, COD, total suspension, total nitrogen and total phosphates. The research proved that in flow to sewage of values individuals parameters depart from typical values in sewage from people. Affirmed low of value total suspension (120,28 mg·dm^-3) compare with value 375 mg·dm^-3 and BOD5 (225,25 mgO₂·dm^-3) compare with value 300 mgO₂·dm^-3 announcing in literature. Value of individual pollution in clean sewage with the exception of total phosphates, was far less from values in legislative documentation for sewage treatment plant. In total phosphates affirmed in half analysis exceed permissible of value 2,5 mgP_og·dm^-3. Permissible of value was exceed on average 62,8%. Exceed of value total phosphates can be cause too big dilute sewage and low flow to sewage to treatment plant. The short-term solution problems with reduction total phosphates can be increase of dose PIX 113 with relation flow to sewage. The middle reduction individuals pollution parameters is lower then project assumption. This situation is cause lower of value pollution parameters in flow to sewage. The biggest discrepancy occurring in real of reduction in total nitrogen and total phosphates (suitably 14 and 20%). The recapitulate, even though is low hydraulic load sewage treatment plant ECOLO-CHEF in Spytkowice in majority good of reduce indices of pollutions. For full opinion of necessary are research on actual hydraulic load, what can be after building sewagesystem in commune Spytkowice.