Experimental Study on the Treatment of Rain Water in the Initial Stage of Jingkai District of Nanchang City by Flocculation Sedimentation Process
In view of the water quality characteristics of high concentration of SS,turbidity,CODCr and TP and low concentration of TN and NH3-N in initial rainwater of Jingkai District of Nanchang City.The experimental study on the removal of SS,turbidity,CODCr,TN,NH3-N and TP from Rain Water was carried out by flocculation sedimentation process.The concentrations of SS,turbidity,CODCr,TN,NH3-N and TP in initial rainwater of the drain outlet in Guiyuan Avenue,Jingkai District,Nanchang City were 786 mg/L,480 NTU,212 mg/L,4.93 mg/L,3.43 mg/L and 1.12 mg/L respectively,when the flocculant PAC was 20mg/L and the coagulant PAM was 2 mg/L,the index decreases to 9mg/L,11 NTU,29.9 mg/L,3.89 mg/L,2.20 mg/L and 0.03 mg/L.Meanwhile,the quality of the water meet the first-class A discharge standard of pollutants discharge Standard for Urban sewage treatment plants(GB 18918-2002).The experiment can provide research ideas and technical support for solving the problem of Rain Water runoff pollution in the initial stage of Jingkai District of Nanchang City.
initial rainwaterflocculation precipitationflocculantcoagulant aid
万方数据
维普
