污水中阴离子表面活性剂的影响及去除  

Influence and Removal of Anionic Surfactants in Wastewater

作　　者：黄伟 韩晓宇 陈江荣 姚富森 黎方铃 陈默 蒙晓琴 李晓林 HUANG Wei;HAN Xiaoyu;CHEN Jiangrong;YAO Fusen;LI Fangling;CHEN Mo;MENG Xiaoqin;LI Xiaolin(Chongqing Three Gorges Water Service Co.,Ltd.,Chongqing 401122,China;Chongqing Agricultural Ecology and Resources Protection Station,Chongqing 401120,China;College of Chemistry and Chemical Engineering,Southwest University,Chongqing 400715,China)

机构地区：[1]重庆三峡水土排水有限公司,重庆401122 [2]重庆市农业生态与资源保护站,重庆401120 [3]西南大学化学化工学院,重庆400715

出　　处：《净水技术》2024年第6期106-111,144,共7页Water Purification Technology

摘　　要：文章系统研究了应用较为广泛的阴离子表面活性剂——十二烷基苯磺酸钠(SDBS)对生物池中污染物(氨氮、总磷、硝态氮)的去除影响以及不同混凝剂[聚合氯化铝(PAC)、硫酸铝(AS)、聚合硫酸铁(PFS)、三氯化铁(FeCl_(3))]对SDBS去除效能和最佳投加位点的选择。试验结果表明,氨氮和总磷的去除率随着SDBS浓度的增加会明显降低,SDBS对以上两种污染物的去除有显著的抑制作用,而SDBS对硝态氮的去除基本无影响。通过进一步试验得出,FeCl_(3)作为混凝剂可以更有效去除SDBS,当FeCl_(3)与SDBS在最佳质量配比(3∶1)时,SDBS的去除率可达到78.3%。在提升泵站、初沉池出口、外回流液中投加FeCl_(3)对SDBS皆有明显的去除效果,但在初沉池出水中投加时SDBS的去除效果最佳。This paper systematically studied the effect of sodium dodecyl benzene sulfonate(SDBS),a widely used anionic surfactant,on the removal of pollutants[ammonia nitrogen,total phosphorus(TP),and nitrate nitrogen]in biological ponds,as well as the selection of different coagulants[polyaluminum chloride(PAC),aluminum sulfate(AS),polyferric sulfate(PFS),and ferric chloride(FeCl_(3))]for SDBS removal efficiency and optimal dosing sites.The experimental results showed that the removal rates of ammonia nitrogen and TP significantly decreased with the increase of SDBS concentration.SDBS had a significant inhibitory effect on the removal of the above two pollutants,while SDBS had little effect on the removal of nitrate nitrogen.Through further experiments,it was found that FeCl_(3) as a coagulant could more effectively remove SDBS.When the optimal mass ratio of FeCl_(3) to SDBS was 3∶1,the removal rate of SDBS could reach 78.3%.The addition of FeCl_(3) to the lift pump station,the outlet of the primary sedimentation tank,and the external reflux had a significant removal effect on SDBS,but the optimal removal efficiency was achieved when adding FeCl_(3) to the outlet water of the primary sedimentation tank.

关 键 词：污水处理 阴离子表面活性剂 生化池 混凝沉淀法 混凝剂 

分 类 号：X703[环境科学与工程—环境工程]