甲苯对UASB反应器中溶解性微生物产物的影响  

Effects of Toluene on Soluble Microbial Products in UASB

作　　者：龙建[1] 孙文全[1] 吴伟[2] 李金鑫[1] 周敏[1] 

机构地区：[1]南京工业大学环境学院,江苏南京210009 [2]江苏省环境科学研究院,江苏南京210036

出　　处：《化工环保》2014年第2期105-109,共5页Environmental Protection of Chemical Industry

基　　金：国家水体污染控制与治理科技重大专项项目(2012ZX 07301-005);江苏省自然科学基金项目(BK2011032);江苏省环境工程重点实验室2012年科研开放基金课题项目

摘　　要：以乙酸钠为外加碳源,考察了UASB反应器内甲苯对可溶性微生物产物（SMP）的影响.实验结果表明：低质量浓度（20～70 mg/L）的甲苯对微生物有刺激作用,使得污泥增殖速率变小,SMP的质量浓度也逐渐减少,经过一段时间的驯化后,系统COD和TOC的去除率分别达到93％和94％以上,下降趋势较小;较高质量浓度（70～200 mg/L）的甲苯对微生物有抑制作用,污泥活性下降,反应器运行状况开始恶化,SMP的质量浓度也逐渐增大,经过一段时间的驯化后,系统COD和TOC的去除率分别维持在81％和83％以上;当甲苯质量浓度超过200 mg/L时,表现为污泥活性严重下降,对COD的去除效果极差.The effects of toluene on soluble microbial products （SMP） in UASB were investigated using sodium acetate as external carbon source.The results show that toluene with low mass concentration （20-70 mg/L） has a stimulating effect on microorganism reducing the multiplication rate of activated sludge and the mass concentration of SMP,and after a period of acclimation,the removal rates of COD and TOC of the system can reach above 93％ and 94％ respectively with less decline; Toluene with high mass concentration （70-200 mg/L） has an inhibitory effect on microorganism causing the decline of sludge activity,worsening the reactor running and increasing the mass concentration of SMP,after a period of acclimation,the removal rates of COD and TOC of the system can remain above 81％ and 83％ respectively; When the toluene mass concentration is over 200 mg/L,the sludge activity will decline seriously with bad COD removal effect.

关 键 词：上流式厌氧污泥床反应器 溶解性微生物产物 甲苯 毒性 

分 类 号：X703[环境科学与工程—环境工程]