污水中阴离子表面活性剂的影响及去除
Influence and Removal of Anionic Surfactants in Waste water
黄伟 1韩晓宇 1陈江荣 1姚富森 1黎方铃 1陈默 1蒙晓琴 2李晓林3
作者信息
- 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
- 折叠
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(FeCl3)]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,FeCl3作为混凝剂可以更有效去除SDBS,当FeCl3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FeCl3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.
Abstract
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(FeCl3)]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 FeCl3 as a coagulant could more effectively remove SDBS.When the optimal mass ratio of FeCl3 to SDBS was 3:1,the removal rate of SDBS could reach 78.3％.The addition of FeCl3 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 FeCl3 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Key words
wastewater treatment/anionic surfactant/biochemical pool/coagulation and sedimentation/coagulant引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据