混凝法预处理垃圾焚烧厂渗滤液的小试研究  

Microscale Test for Coagulation Pretreatment of Leachate from Municipal Solid Waste Incineration Plant

作　　者：徐清 谢倩[2] 赵秀兰[2] 张晟[3] 邓劲蕾[3] 

机构地区：[1]重庆市中生环保工程有限公司,重庆400039 [2]西南大学,重庆4007162 [3]重庆市环境科学研究院,重庆401147

出　　处：《三峡环境与生态》2013年第1期28-31,共4页Environment and Ecology in the Three Gorges

摘　　要：采用混凝法对垃圾焚烧厂的渗滤液进行了预处理。采用单因素试验和正交试验相结合的方法,以浊度和COD作为响应指标,在小试规模下,研究了搅拌时间、pH值、PAC投加量、PAM投加量对渗滤液处理效果的影响,得出了最优的工艺参数组合。单因素试验结果表明,单因素对浊度的最大处理效率在92.14%～96.48%之间,对COD的最大处理效率在22.0%～33.1%之间。混凝法对浊度的去除率高于COD。正交试验结果表明,影响COD最高去除率的因子主次顺序为:pH值>搅拌时间>PAC投加量>PAM投加量。试验在pH值为10,搅拌时间为40min,PAC(质量浓度10%)投加量为0.6mL/L,助凝剂PAM投加量(质量浓度1‰)为0.5mL/L时,取得最优工艺参数组合。此时浊度去除率为91.65%,COD去除率为34.6%。In this paper, leachate from municipal solid waste incineration plant was pretreated by coagulation techno- logy. In microscale test, relation between the treatment effect and the influencing factors, such as mixing time, pH, PAC and PAM dosing, was investigated by a combined method with the single factor test and the orthogonal test, in which turbidity and COD both chosen as response indexes. The experiment identified an optimum combined parame- ters for coagulation technology. Furthermore, the single factor test indicated that the highest removal efficiency of turbidity registered between 92.14% ~96.48G, while the highest removal rate of COD registered 22.0~ ~33.1%, coagulation technology appeared more effective in turbidity removal than in COD . While orthogonal test showed the influencing factors of the effectiveness for COD removal, registered as follows： the pH 〉 the mixing time the PAC dosing〉 the PAM dosing. The optimum coagulation technological effectiveness performed a 91.65% removal of turbidity and a 34.6% removal of COD, when pH , mixing time, PAC（10%） dosing and PAM（1‰） dosing register respectively as 10,40 min,0.6 mL/L and 0.5 mL/L.

关 键 词：混凝法 预处理 垃圾焚烧发电厂 渗滤液 小试 

分 类 号：X703.1[环境科学与工程—环境工程]