铁炭微电解法削减老龄垃圾渗滤液的毒性研究  

Detoxification Experiment of Older Landfill Leachate by Ferric- Carbon Micro-electrolysis Method

作　　者：朱凡[1] 李平[1] 吴锦华[1] 谭展机[1] 韦朝海[1] 

机构地区：[1]华南理工大学环境科学与工程学院,广东广州510640

出　　处：《中国给水排水》2006年第11期83-86,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(20477011);广东省科技攻关项目(2005B33301003);中山市科技攻关项目(2004A051)

摘　　要：采用铁炭微电解法进行了削减老龄垃圾填埋场渗滤液毒性的试验,研究了初始pH值、铁炭比、铁炭添加量、反应时间等对有机污染物去除及生物毒性削减效果的影响,并采用耗氧呼吸速率法评估了经铁炭法处理前、后渗滤液的生物降解性能。结果表明,当pH值为3、铁与炭的质量比为5∶1、其添加量分别为5g/100mL和1g/100mL以及反应时间为120min时,铁炭微电解法对有机污染物的去除率及生物毒性削减率分别达到了54.7%和92.1%。经过铁炭微电解法处理后水样的耗氧呼吸速率常数较原水的提高了279%,可生化性得到了显著改善。Ferric - carbon micro-electrolysis method was applied in the detoxification of older landleachate. The reaction conditions, such as pH, Fe/C ratio, reaction time which would influence the organic contaminants removal and toxicity reduction, were studied. The biodegradability of landfill leachate before and after ferric - carbon micro-electrolysis treatment was evaluated by respirometric analysis. The result indicates that when the pH is 3, Fe/C ratio is 5 ： 1, the dosage of iron and activated carbon are 5 g/100 mL and 1 g/100 mL, and the reaction time is 120 min, the removal rate of the organic contaminants and the degree of toxicity reduction reach 54.7% and 92.1% respectively. After ferric - carbon micro-electrolysis treatment, OUR constant increases by 279% compared with original leachate, and the biodegradability of the leachate is improved greatly.

关 键 词：垃圾渗滤液 生物毒性 铁炭微电解法 毒性削减 

分 类 号：X703.1[环境科学与工程—环境工程]