A device and method for the integration of short-range nitrification anammox-short-range denitrification anammox into domestic sewage in stages

Abstract

The invention relates to an integrated device and method for short-range nitrification anaerobic ammonium oxidation and short-range denitrification anaerobic ammonium oxidation, which belongs to the field of sewage biological treatment. The device includes an inlet water tank, an SBBR reactor and an outlet water tank. The domestic sewage with 30-40% of the effective volume of the reactor enters the SBBR reactor for anaerobic stirring to store the internal carbon source; then micro-aerobic aeration performs synchronous short-range nitrification anammox reaction to remove ammonia nitrogen and generate nitrate nitrogen and nitrogen; then Domestic sewage with 10-20% of the effective volume of the reactor enters the SBBR reactor for anaerobic stirring, and a synchronous short-range denitrification anaerobic ammonium oxidation reaction occurs to generate nitrate nitrogen and nitrogen gas; finally, aeration removes unreacted organic matter. The present invention couples the short-range nitrification anammox process and the short-range denitrification anammox process in situ by way of segmented water intake, makes full use of the anammox reaction and organic matter in domestic sewage, and realizes deep denitrification with high efficiency and energy saving.

Description

technical field

[0001] The invention relates to a device and method for the integration of short-range nitrification anammox-short-range denitrification and anammox in domestic sewage, which belongs to the technical field of sewage biological treatment and is suitable for the treatment of low C / N ratio urban domestic sewage deal with. Background technique

[0002] Water is the source of life on earth. With the rapid development of the modernization of human society, water pollution has become more and more serious. The denitrification and phosphorus removal of sewage has become an urgent problem for all human beings to solve. The traditional biological denitrification process can no longer fully meet the new standards and the requirements of a resource-saving society. As a new nitrogen removal process, the anaerobic ammonium oxidation process has received extensive attention due to its advantages of almost no carbon source, low sludge production, and saving aeration. [00...

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