Dual-sludge denitrification dephosphorizing and denitrifying A/A-O device and method
A technology for denitrifying phosphorus removal and double sludge is applied in the field of biological sewage treatment to achieve the effects of low energy consumption and low system sludge yield.
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[0035] The best embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0036] like figure 1As shown, the A / A-O device of double sludge denitrification dephosphorization and denitrification described in the embodiment of the present invention is mainly composed of primary sedimentation tank 1, anaerobic-anoxic device 3, secondary sedimentation tank 7, intermediate pool 8, exposure Gas biofilter 10 and clean water tank 11 are sequentially connected to form; the anaerobic-anoxic device 3 is the AA device of the AAO treatment process, and the primary sedimentation tank 1 is anaerobically connected by the inlet pump 2 and the anaerobic-anoxic device 3. The oxygen zone 4 is connected, and the mud-water mixture flows through the anoxic zone 5 and the degassing zone 6 of the anaerobic-anoxic device 3 under gravity, and the degassing zone 6 of the anaerobic-anoxic device 3 is connected with the secondary sedimentat...
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