Sewage treatment method
A sewage treatment method and sewage technology, which are applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, filtration treatment, etc. It is easy to grow and reproduce, the water quality fluctuates greatly, and the treatment effect is good.
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[0040] Attached below Figure 1~2 The technical scheme of the present invention is described further:
[0041] The invention provides a sewage treatment method, see figure 1 , mainly including the following steps:
[0042] S1: Sewage enters the pretreatment tank, and there is a grill in the pretreatment tank, and the sewage flows through the grill to remove some impurities in the sewage, such as floating objects and large particles of sediment;
[0043] S2: After being treated in the pretreatment tank, the sewage enters the anaerobic hydrolysis tank for treatment;
[0044] S3: The sewage enters the composite biological filter after being treated by anaerobic hydrolysis tank, and flows through the first filter material layer of the composite biological filter, the aerobic zone of the second filter material layer and the anoxic zone of the second filter material layer in sequence; Biofilms are attached to the first filter material layer and the second filter material layer; ...
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