摘要
针对南昌市经开区初期雨水中SS、浊度、CODCr、TP浓度较高,而TN、NH3-N浓度较低的水质特点,采用絮凝沉淀工艺开展了去除初期雨水中SS、浊度、CODCr、TN、NH3-N、TP的试验研究.南昌市经开区桂苑大道排河口初期雨水中的SS、浊度、CODCr、TN、NH3-N、TP浓度分别为786 mg/L、480 NTU、212 mg/L、4.93 mg/L、3.43 mg/L、1.12 mg/L.当投加絮凝剂 PAC 为 20 mg/L,助凝剂 PAM 为 2 mg/L 时,沉后水为 9 mg/L、11 NTU、29.9 mg/L、3.89 mg/L、2.20 mg/L、0.03 mg/L.同时,沉后水水质达到了《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A排放标准.试验可为解决南昌市经开区初期雨水径流污染问题提供研究思路及技术支持.
Abstract
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.
维普
万方数据