Device and method for sectional water inlet A2/O process intensified biological nitrogen and phosphorus removal
A segmented water intake and biological denitrification technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc.
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[0016] combine figure 1 , describe the embodiment of the present invention in detail:
[0017] 1) The raw water enters the sub-section inlet water A from the raw water tank (1) through the inlet pump (2). 2 The / O pool (6) enters the anaerobic zone (8) and the second anoxic zone (11) through the water inlet main pipe (3) and the control gate valve (4) (5) respectively, and the two-stage influent accounts for the volume of the total raw water. 60% and 40% respectively; the nitrifying liquid in the aerobic zone (12) is returned to the first anoxic zone (9) through the reflux pump (21), and the short-range denitrification anammox denitrification is carried out, which is obtained from the secondary sedimentation tank ( The sludge in 14) is returned to the anaerobic zone (8) through the return pump (22), the denitrifying bacteria use the carbon source in the raw water for denitrification, and the phosphorus-accumulating bacteria use the raw water in the anaerobic zone (8). The vo...
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