Research On Upgrading And Reconstruction Project Of Water Treatment Plants In The New Area Of Jinghe River And The Weihe River

This article through to the domestic and foreign technology of the sewage treatment plant DiBiao renovation project analysis,data collection integration of status quo of the sewage treatment plant,water,technical and economic analysis,it is concluded that works well for Xi 'an entirely different processing plan of the new town sewage treatment plant.The engineering construction scale is 100000 m3 / d,a reformation DiBiao size is 50000 m3 / d.Feed water quality for sewage plant design: CODCr = 800 mg/L,BOD5 = 350 mg/L,SS = 520 mg/L,NH3-N = 27.5 mg/L,TN = 67.5 mg/L,TP = 5.5 mg/L.Xi 'an status between the new city sewage treatment plant sewage treatment process by using oxidation ditch.Sewage plant water-quality status has reached the urban sewage treatment plant pollutant discharge standard in the level 1B standard,some close to the level of A standard.Di Biao transformation and corresponding to the original design size,the reliability of 90% of the measured water quality value as the DiBiao reconstruction engineering design of the feed water quality values: CODCr = 899 mg/L,BOD5 = 365 mg/L,SS = 580 mg/L,NH3-N = 55 mg/L,TN = 73.6 mg/L,TP = 6.18 mg/L.According to the economic and technical comparison,combined with the specific situation of the sewage plant,finally chosen to strengthen the secondary biological treatment process for the oxidation ditch and Biological Aerated Filter,depth of processing scheme for high-density clarifier + fiber rotary filter,using UV disinfection disinfection technology with a combination of chlorine dioxide process,part of reclaimed water with chlorine dioxide disinfection technology,outside to many factory original UV disinfection technology on water,deodorization process by using hydrogen ion deodorization technology.