两种浸提方法对水处理污泥中重金属的浸提特性研究  

Study on leaching characteristics of heavy metals in sewage treatment sludge by two leaching methods

作　　者：张浩 魏显珍[2] 陆恩舟 王洪帅 ZHANG Hao;WEI Xianzhen;LU Enzhou;WANG Hongshuai(Tianjin Free Trade Zone Urban Environmental Administration,Tianjin 300308,China;Tianjin Recyclable Resources Institute,All China Federation of Supply and Marketing Cooperatives,Tianjin 300191,China)

机构地区：[1]天津港保税区城市环境管理局,天津300308 [2]中华全国供销合作总社天津再生资源研究所,天津300191

出　　处：《再生资源与循环经济》2022年第4期34-38,共5页Recyclable Resources and Circular Economy

摘　　要：以某综合污水处理厂浓缩压滤后的污泥为研究对象,采用了硫酸/硝酸混合液作浸提剂、翻转振荡(HJ/T 299—2007)和去离子水作浸提剂、水平振荡(HJ 557—2010)两种浸提方法,通过检测污泥浸出液中铅、镉、砷、铬、铜、锌、镍、铍、钡、硒等重金属元素的定量结果,研究了该污泥样品中多种重金属元素的浸出变化特性和规律。结果表明:相对而言,砷、硒和钡元素更适于用HJ 557—2010方法进行浸提;铜、铍和铬元素用HJ/T 299—2007方法的浸提效率远高于HJ 557—2010方法;锌元素用HJ 557—2010方法的浸提量略高于HJ/T 299—2007方法。This paper took the sludge from industrial and domestic sewage treatment plants as the research subject.The characteristics and variation of leaching quantity in the sludge samples were studied by two leaching methods for extracting heavy metals. One method is HJ/T299—2007(sulfuric acid/nitric acid mixture as extractant, and turning shaking), another is HJ557—2010(deionized water as extractant, and horizontal shaking). Experimental result showed that the amount of arsenic, selenium and barium leached by HJ 557—2010 method is relatively larger, and the extraction efficiency of the HJ/T 299—2007 method for copper, beryllium and chromium is much higher than the HJ 557—2010method.In addition, the quantities of zinc leached by HJ 557—2010 method is slightly higher than that of the HJ/T 299—2007 method.

关 键 词：水处理污泥 浸提方法 重金属 浸出特征 

分 类 号：X703[环境科学与工程—环境工程]