延安市区生活垃圾可堆腐物中的重金属污染分析  

Analysis on heavy metal pollution in Yan'an compostable refuse

作　　者：刘晓红[1,2] 刘延萍[3] 高歌[4] 张增强[1] 

机构地区：[1]西北农林科技大学生命科学学院 [2]延安大学化学与化工学院,陕西延安716000 [3]杨凌职业技术学院学报编辑部 [4]杨凌职业技术学院基础课部

出　　处：《西北农林科技大学学报（自然科学版）》2005年第7期143-146,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：陕西省科技攻关项目(2003K02-J13)

摘　　要：对延安市区生活垃圾可堆腐物中的重金属元素Pb、Cr、Cd、Hg、As的含量进行了为期1年的监测研究,得到上述元素在不同采样时间的含量,并与各类标准相对比,通过分析重金属元素的污染程度及其含量的变化趋势,计算出各个元素的等标污染负荷比,得出不同采样时间的主要污染物,并分析了污染元素的主要来源。结果表明,延安市区生活垃圾可堆腐物中的重金属元素Pb、Cr、Cd、Hg、As的污染轻微,其中,Pb和Cd是主要的污染元素;可堆腐物中的塑料和纸类碎片以及粘附的尘土可能是污染的主要来源。建议将对可堆腐物的堆肥处理作为其他处理方式的必要环节,以生产优质的精堆肥。The content of heavy metal Pb,Cr,Cd,Hg in compostable refuse were researched with one-year monitoring in Yan'an city,which could be contrasted to different standard values.Pollution degree and variant tendency the heavy metals of above were analyzed.Equal standard pollution load ratio of different elements was calculated.Then the main pollution elements were found,and the main sources of pollution elements were analyzed.The results showed that the degree of heavy metals (Pb,Cd,Cr,Hg,As) pollution in Yan'an domestic refuse was low.Pb and Cd were main pollution elements.Plastics,paper and stick dust in compostable refuse were probably main sources.Finally organic matter in domestic refuse could be composted as necessary part in treatmeat of other domestic refuse so as to produce refined compost.

关 键 词：延安市区 生活垃圾 可堆腐物 重金属污染 

分 类 号：X132[环境科学与工程—环境科学]