Process for removing nitrogen and phosphor using traditional waste water treatment process
A technology for nitrogen and phosphorus removal and sewage treatment, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low removal rate of nitrogen and phosphorus, and maintain Processing capacity, convenient transformation, good technical and economical effect
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[0014] An urban sewage treatment plant adopts an adsorption regeneration process. The removal rate of ammonia nitrogen is 10%-30%, and the removal rate of TP is less than 20%. The nitrogen and phosphorus of the secondary treatment effluent exceed the GB18918-2002 Class 1 B standard, and technical transformation is required.
[0015] The technical transformation of the sewage treatment plant adopts this denitrification and dephosphorization process, that is, the sewage enters the aeration tank and the secondary sedimentation tank after passing through the grit tank (the grit tank, aeration tank and the secondary sedimentation tank still use the original technical parameters) After separation, the sewage enters the biological aerated filter and is adsorbed for 45 minutes before being discharged. 60% of the activated sludge is returned to the aeration tank, and the remaining part of the activated sludge and the remaining sludge are returned to the primary sedimentati...
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