Method and device for efficiently denitriding and dephosphorizing underground percolation sewage
A technology of sewage treatment device and sewage treatment method, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., which can solve the problems of unguaranteed oxygen supply, low removal rate, and low oxygen supply intensity To achieve the effect of reducing pollutant load, ensuring denitrification ability, and enhancing anti-blocking ability
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Embodiment 1
[0030] figure 1 As shown, after the raw sewage (domestic sewage) is pretreated by the grid tank 1, the anaerobic sedimentation tank 2 and the adjustment tank 3, it can enter the underground infiltration sewage treatment through the upper water distribution pipe, the water distribution-ventilation pipe and the lower water distribution pipe. Device 4 is used for sewage treatment. The grill pool 1 is used to remove leaves, plastic bags and other garbage in the raw sewage. Anaerobic sedimentation tank 2 is used for oil separation and removal of suspended particles. The regulating tank 3 is used to divide the raw sewage in proportion and discharge it in a fixed and quantitative manner.
[0031] figure 2 An underground percolation sewage treatment device for efficient denitrification and dephosphorization is shown, including an infiltration area A and an infiltration area B. Among them, the infiltration zone A consists of the covering layer 11, the upper water-dispersing layer ...
Embodiment 2
[0039] figure 2 An underground percolation sewage treatment device for efficient denitrification and dephosphorization is shown, including an infiltration area A and an infiltration area B. Among them, the infiltration zone A consists of the covering layer 11, the upper water-dispersing layer 12, the upper fine-filtering layer 14, the upper fine-filtering layer 15, the water-dispersing-ventilating layer 16, the middle fine-filtering layer 18, the middle fine-filtering layer 19, and the lower layer from top to bottom. The water-dispersing layer 20, the lower coarse filter layer 22 and the diversion layer 23 are composed; the infiltration zone B is composed of the diversion layer 23, the phosphorus removal layer 24 and the vegetation layer 25 from bottom to top. The infiltration zone A and the infiltration zone B communicate through the bottom flow guide layer 23 . The total filling height of the infiltration area A is 2.0m, and the total filling height of the infiltration are...
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