Wastewater advanced denitrification apparatus and method employing single-stage SBBR (sequencing batch biofilm reactor) short-cut nitrification anammox coupled endogenous denitrification

Abstract

A wastewater advanced denitrification apparatus and method employing single-stage SBBR (sequencing batch biofilm reactor) short-cut nitrification anammox coupling with endogenous denitrification belong to the field of wastewater bio-treatment. Wastewater enters a single-stage SBBR short-cut nitrification coupled endogenous denitrification reactor through a water pump; in anaerobic stirring phase, phosphorus-accumulating bacteria and glycogen accumulating organisms make use of an inorganic carbon source in raw water to store internal carbon sources; in hypoxic aeration stirring phase, ammonia oxidizing bacteria convert partial NH4<+>-N in the raw water into NO2<->-H, part of NO2<->-H is subjected to autotrophic nitrogen removal with the rest NH4<+>-N in the raw water via anammox effect, and the other part of NO2<->-H and little NO3<->-H produced in anammox are utilized by the phosphorus-accumulating bacteria and glycogen accumulating organisms in the subsequent anoxic stirring phase to provide endogenous denitrification. According to the method, by coupled application of short-cut nitrification, anammox and endogenous denitrification to wastewater bio-treatment, it is possible to provide wastewater advanced denitrification based on energy saving, and full utilization of carbon sources.

Description

technical field [0001] The device and method for single-stage SBBR short-range nitrification anaerobic ammonium oxidation coupling endogenous denitrification sewage deep denitrification involved in the present invention belong to the technical field of sewage biological treatment, and are a test device and method for strengthening low-carbon sewage deep denitrification . Background technique [0002] With the development of economy and society and the improvement of people's living standards, the phenomenon of eutrophication caused by nutrients such as nitrogen and phosphorus in sewage is becoming more and more serious, and the discharge standards of water bodies are becoming increasingly strict. The research on the existing sewage deep denitrification process is also urgent Towards the direction of high efficiency and low energy consumption. [0003] The integrated anammox technology combines short-cut nitrification and anammox in one reactor to realize an efficient path f...

AI Technical Summary

Problems solved by technology

Compared with the traditional denitrification process, the internal carbon source denitrification technology can well solve the problem of unstable nitrogen and phosphorus removal caused by insufficient carbon source in the traditional process, and has high carbon source utilization rate, low aeration energy consumption and The advantage of low sludge production, but there is also the disadvantage of long reaction time

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