A sewage nitrogen and phosphorus removal system
A technology for nitrogen and phosphorus removal and sewage, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of difficulty in meeting sewage treatment standards, reduction of total nitrogen and total phosphorus content, etc. , to achieve the effect of solving the difficulty of reaching the standard of total nitrogen and total phosphorus in the effluent, increasing the nitrification rate, and reducing the occupied area
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Embodiment example 1
[0048] Such as figure 2 The sewage nitrogen and phosphorus removal treatment system shown in A is composed of anaerobic tank, mud-water separation unit, anoxic tank, aerobic tank, and secondary sedimentation tank connected in sequence, and a nitrification unit is also installed. The influent flow Q=10L / h, the anaerobic tank is equipped with the inlet of raw water and the return sludge 1 of the secondary settling tank, the nitrification unit only includes the nitrification tank, and the supernatant separated by the mud-water separation unit enters with the return sludge 2 of the secondary settling tank Nitrification tank, the mixed solution from the nitrification tank and the sludge from the mud-water separation unit enter the anoxic tank, the mixed solution from the anoxic tank enters the aerobic tank, and the mixed solution from the aerobic tank enters the secondary settling tank, and the secondary settling tank is set There is a water outlet, part of the sludge from the sec...
Embodiment example 2
[0052] Such as figure 2 The sewage nitrogen and phosphorus removal treatment system shown in B is composed of anaerobic tank, mud-water separation unit, anoxic tank, aerobic tank, and secondary sedimentation tank connected in sequence, and a nitrification unit is also installed. Influent flow Q=10L / h, the anaerobic tank is provided with the inlet of raw water and secondary sedimentation tank return sludge 1, the nitrification unit includes mixing tank and nitrification tank, the supernatant separated by the mud-water separation unit and the secondary sedimentation tank return sludge 2 Enter the mixing tank, the mixed solution flowing out of the mixing tank enters the nitrification tank, the mixed solution flowing out of the nitrification tank and the sludge flowing out of the mud-water separation unit enter the anoxic tank, the mixed solution flowing out of the anoxic tank enters the aerobic tank, and the aerobic tank flows out The mixed solution enters the secondary settling...
Embodiment example 3
[0057] Such as image 3 The sewage denitrification and phosphorus removal treatment system shown is composed of anaerobic tank, mud-water separation unit, anoxic tank, aerobic tank, and secondary sedimentation tank connected in sequence, and a nitrification unit is also provided. Influent flow Q=10L / h, the anaerobic tank is provided with the inlet of raw water and secondary sedimentation tank return sludge 1, the nitrification unit includes mixing tank and nitrification tank, the supernatant separated by the mud-water separation unit and the secondary sedimentation tank return sludge 2 Enter the mixing tank, the mixed solution flowing out of the mixing tank enters the nitrification tank, the mixed solution flowing out of the nitrification tank and the sludge flowing out of the mud-water separation unit enter the anoxic tank, the mixed solution flowing out of the anoxic tank enters the aerobic tank, and the aerobic tank flows out The mixed solution enters the secondary settling...
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