Sewage purifying method for coal conveying system
A technology for sewage purification and coal conveying system, which is applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Waste and other problems, to achieve the effects of obvious environmental and economic benefits, small footprint, and low investment costs
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[0016] A method for purifying sewage in a coal delivery system, said method comprising the steps of:
[0017] In the first step, the coal conveying flushing water is introduced, and the coal conveying flushing water enters the primary sedimentation tank for sedimentation, and its supernatant flows into the secondary sedimentation tank, and the coal slime at the bottom of the primary sedimentation tank is fished out for reuse;
[0018] The second step, sewage treatment in the secondary sedimentation tank: the sewage in the secondary sedimentation tank is transported to the water purifier through the slurry pump, and the inorganic coagulant and the organic composite flocculant are added before and after the pump during the transportation;
[0019] The third step is the treatment of large suspended particles of sewage. The sewage enters from the middle and lower part of the water purifier to produce a swirling rise. First, the larger suspended particles sink to the sludge concentr...
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