氯对粉末活性炭吸附水中阿特拉津性能的影响  

Effect of chlorine on adsorption performance of PAC for atrazine

作　　者：刘成[1,2] 陈卫[1] 李磊[1] 盛誉[1] 

机构地区：[1]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098 [2]河海大学环境科学与工程学院,江苏南京210098

出　　处：《解放军理工大学学报（自然科学版）》2011年第3期268-272,共5页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50908073);国家科技重大专项基金资助项目(2008ZX07421-002)

摘　　要：为探讨氯对粉末活性炭(PAC)吸附水中阿特拉津效能的影响及预氯化与PAC联用工艺处理水中特定污染物时的工艺优化措施,采用小试试验研究氯的投加时间、投加量对PAC吸附阿特拉津的容量及速度的影响。结果表明,氯会显著降低PAC吸附阿特拉津的容量和速度,且氯在腐殖酸溶液中的降低程度小于在纯水中的;在腐殖酸溶液中,氯的投加时间影响PAC吸附阿特拉津的能力,先投加氯并反应一定时间后投加PAC对阿特拉津的去除效果最好,去除率较同时投加和先加PAC后加氯2种工况高10%左右;当水中氯含量在0.2 mg/L以下时,其对PAC吸附的负作用基本可以忽略(降低3%左右)。所以,针对水中类似阿特拉津的性质较稳定有机物的去除,PAC吸附应尽量避免与预氯化联用,确需联用时应间隔一定时间。To examine the inflence of chlorine on the adsorption effect of powdered activated carbon （PAC） for atrazine and optimize the combined project of pre-chlorination and PAC adsorption, jar-tests were conducted to sudy the doasage and the dosing point of chlorine＇s effect on the adsorption capacity and the velocity of PAC. Results show that chlorine can decrease the adsorption capacity and the adsorption rate of the PAC to atrazine in pure water and humic acids solution. In addition, the extent of the decrease in humic acid solution is less than that in pure water; that the adding point of chlorine affects the removal effect of atrazine by the combined process in humic acids solution, in which adding chlorine before PAC adsorption can increase the removal rate by 10% than at the other two adding points; and that when the concentration decreases to below 0.2 mg/L, the negative effect of chlorine can be ignored. For the removal of relatively stable organic matters similar to atrazine,the combined process should be avoided, or used at some interval.

关 键 词：氯 粉末活性炭 阿特拉津 吸附性能 

分 类 号：X703[环境科学与工程—环境工程] TU991.2[建筑科学—市政工程]