AO high-efficiency nitrogen and phosphorus removal system
A high-efficiency technology for denitrification and phosphorus removal, applied in water/sewage multi-stage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. The problems of low concentration and unfavorable denitrification efficiency can achieve the effect of strong shock load resistance, stable operation and low operating cost.
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[0025] The detailed description of the AO high-efficiency denitrification and dephosphorization system of the present invention will be described below in conjunction with the embodiments and the accompanying drawings.
[0026] Such as figure 1 As shown, the AO high-efficiency nitrogen and phosphorus removal system of the present invention includes a biological pool 10 and a secondary sedimentation tank 11 connected to the sewage outflow end of the biological pool 10. The sewage enters the biological pool 10 in different proportions, and then undergoes secondary sedimentation. Pool 11 flows out. The biological pool 10 is sequentially provided with a first-level anoxic zone 1, an anaerobic zone 2, a first-level aerobic zone 3, a first-level motorized zone 20, a second-level anoxic zone 4, and a second-level good zone from sewage inflow to sewage outflow. Oxygen zone 5, secondary maneuvering zone 21, tertiary anoxic zone 6, tertiary aerobic zone 7, tertiary maneuvering zone 22,...
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