Technical improvement method for biological sewage treatment process

Abstract

The invention relates to a technical improvement method of an MUCT (Modified University of Cape Town) sewage treatment process, belonging to the technical field of biological sewage treatment in environmental engineering discipline. In order to further improve the comprehensive treatment efficiency of the MUCT process and improve the activity of sludge in an MUCT sewage treatment system, a bioaugmentation pool is respectively and additionally arranged in a sludge return section and a nitration liquid return section of the MUCT sewage treatment system, and a specially prepared biological active composite filler is filled in the pools as a culture medium and an adhesion carrier of microorganisms; and a part of returned sludge and nitration liquid in the sewage treatment system enter respective bioaugmentation pool, stay for a period and return to the original positions in the MUCT sewage treatment system according to different proportions after being full contact with the biological active composite filler. The invention has the advantages of simpleness and easiness in operation and obvious effect and can ensure that the performance of active sludge in the system can be improved, and the sewage treatment effect can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment in the discipline of environmental engineering, and in particular relates to a technical improvement method for MUCT sewage biological treatment process. Background technique [0002] At present, the eutrophication of water caused by excessive discharge of nitrogen and phosphorus has increasingly become an environmental problem that is widely concerned by the society. The requirements for urban sewage treatment plants have also changed from emphasizing the removal of organic matter in the past to controlling eutrophication on this basis. For the purpose of nitrogen and phosphorus removal in sewage. How to solve and deal with the contradictory relationship and disadvantages existing in the biological nitrogen and phosphorus removal process of sewage, optimize the operation of the biological nitrogen and phosphorus removal process system, and improve the effect of biological nitrogen and ph...

AI Technical Summary

Problems solved by technology

The MUCT process is a new derivative process of the activated sludge process, which can prevent nitrate from entering the anaerobic zone to the greatest extent and affect the phosphorus release of phosphorus accumulating bacteria, improve the efficiency of biological phosphorus removal, and maintain a high nitrogen removal efficiency. , especially suitable for treating sewage with low C / N, is a kind of sewage treatment technology with good development prospects, but because this process is a process derived from activated sludge process, there are still some unavoidable problems in activated sludge process itself , such as sludge bulking, high sludge yield, unstable denitrification and dephosphorization effects, and malodor during treatment. Therefore, for this process, it is necessary to avoid the above-mentioned occurrences by improving the characteristics of the activated sludge in the system. question