Mixed municipal sewage and fecal sewage A2/O-biomembrane nitrogen and phosphorus synchronous removing device and method thereof

Abstract

The invention discloses mixed municipal sewage and fecal sewage A2/O-biomembrane nitrogen and phosphorus synchronous removing device and method thereof. In the device, a second aerobic tank is connected with an anoxic tank through a pipeline and a mixed-liquid reflux pump; a sedimentation tank is connected with an anaerobic tank through a pipeline and a sludge reflux pump; and suspended filling materials are dispersed into a first aerobic tank and the second aerobic tank and are three-dimensional hollow light porous porcelain granules. By filling the suspended filling materials into an aeration tank of the traditional AAO (Anaerobic, Anoxic and Oxic) technology, carriers of an attaching and growing surface of microorganism are provided, biomass in the aeration tank is increased, processing ability of waste water is improved and sewage bulking is overcome, and attached phases and suspended phases simultaneously exist in the aeration tank to sufficiently exert superiority. On the premise that the volume of a reactor is not increased, the invention intensifies a nitration generating condition, improves the function of removing nitrogen and phosphorus of the traditional active sludge method technology, solves the problem of sludge age contradiction of the traditional AAO technology in a nitrogen and phosphorus removing process and has good water processing effect.

Description

technical field [0001] The invention relates to wastewater treatment technology, in particular to a kind of urban sewage mixed feces sewage A 2 / O-biofilm synchronous nitrogen and phosphorus removal treatment device and its process. Background technique [0002] In the existing sewage and wastewater biological treatment process, the removal of nitrogen and phosphorus is much more complicated than the removal of carbon, which involves nitrogen nitrification, denitrification, microbial phosphorus release and phosphorus absorption, etc. The process of each of the above processes The purpose is different, and the requirements for microbial composition, matrix type and environmental conditions are also different. How to organically combine various appropriate reaction conditions in a water treatment device is an important topic. [0003] Since Wuhrmann established the post-denitrification process to remove nitrogen in urban sewage in 1932 using microbial endogenous sources, aft...

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a kind of urban sewage mixed manure sewage A2 / O-biofilm synchronization that overcomes sludge bulking and solves the problem of mud age contradiction in the process of nitrogen and phosphorus removal in the traditional AAO process Nitrogen and phosphorus removal device

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