Sewage treatment system and method through nitrogen and phosphorus removal constant water level sequencing batch activated sludge process
An activated sludge method, nitrogen and phosphorus removal technology, applied in the direction of water/sludge/sewage treatment, water/sewage multi-stage treatment, chemical instruments and methods, etc., to achieve simple structure, good phosphorus removal effect, constant water level Effect
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[0038] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.
[0039] see figure 1 and 2 , the embodiment of the denitrification and dephosphorization constant water level sequence batch activated sludge method for treating sewage system is provided with a sewage treatment pool, and the sewage treatment pool is composed of two water tanks fixed on the bottom and side walls of the sewage treatment pool in a sealed manner. Lifan 1 is divided into three areas, which are biological selection area A, reaction area B, and effluent balance area C. The water levels in the three areas of biological selection area A, reaction area B, and effluent balance area C are constant. The volume ratio of the reaction zone B and the water outlet balance zone C is 1:3:1; the upper side of the hydraulic sail 1 floats on the liquid surface, and the surface area of the hydraulic sail 1 is much larger than that of the hydraulic sail 1 ...
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