Ultrahigh-filtering-speed IV-class water upgrading standard transformation nitrogen and phosphorus removal device and a treatment process thereof

[0035] The treatment flow rate of a sewage treatment plant in Jiangsu Province is 150,000m3 / d. The original core process is the "oxidation ditch + secondary sedimentation tank" process. The pollutant index of the secondary treatment effluent before entering this process is: TN=18mg / L, SS= 80mg / L, TP=3.5; after this process, the effluent water quality indicators are: TN=2.5mg / L, SS=2mg / L, TP=0.1mg / L.

[0037] A municipal sewage treatment plant in Anhui Province has a treatment flow rate of 50,000m3 / d. The original main process is the "AAO+secondary sedimentation tank" process. The pollutant indicators before the secondary treatment effluent enters this process are: TN=18mg / L, SS=30mg / L, TP=2.5; after being treated by this process device, the effluent water quality indicators are: TN=2.5mg / L, SS=3mg / L, TP=0.1mg / L.

[0039] A sewage treatment plant in a chemical industry park in Nanjing, Jiangsu Province, has a treatment flow rate of 10,000m3 / d. The original main process is the process of "hydrolytic acidification + AAO + secondary sedimentation tank + ozone". The pollutant index before the secondary treatment effluent enters this process is: TN=13mg / L, SS=30mg / L, TP=2.7; after being treated by this process device, the effluent water quality index is: TN=2.6mg / L, SS=3mg / L, TP=0.05mg / L, and the effluent can reach Class IV water standard,.

[0040] The invention solves the problem that the filter head of the traditional aerobic nitrification biological filter is easily blocked due to fibrous impurities; it solves the problem of blockage of the upward flow denitrification biological filter and the problem of high processing load and low load, heavy medium and heavy medium loading The treatment effect of the high-efficiency flocculation clarification tank is obviously better than tha