重金属建筑废物中污染物随酸雨的迁移研究  

Pollution Transformation of Heavy Metal Polluted CDW in Acid Rain

作　　者：谢田[1] 高小峰[1] 黄晟[1] 孙艳秋[1] 赵由才[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《山东化工》2015年第6期157-160,164,共5页Shandong Chemical Industry

基　　金：环保公益性行业科研专项项目;建筑废物处置和资源化污染控制技术研究(201309025)

摘　　要：通过模拟受复合重金属污染建筑废物的填埋,研究不同强度酸雨条件下重金属建筑废物中污染物的迁移。结果表明,建筑废物渗滤液的p H值保持在11~12,随时间推移Ca浓度可从7000mg/L左右降低至250mg/L左右,溶解性总固体含量和电导率及其二者比值也保持较高水平。此外,在强酸性降雨、弱酸性降雨、中性降雨条件下,重金属Cu、Cr和Cd的累计释放量依次降低,而Pb在中性降雨释放得最多,Zn在弱酸性降雨下释放得最多。This paper simulated the landfill of heavy metal polluted construction and demolition waste （C＆DW） to study the transformation of contaminants under different acid rain condition. The results showed that pH of C＆DW leachatc fluctuated between 11 and 12, concentration of Ca dropped from 7000mg/L to 250mg/L approximately, simultaneously total dissolved solids （TDS）, electrical conductivity （EC） and their ratio kept high. Moreover, the cumulative released quantity of Cu, Cr, Cd declined in sequence of strongly acidic rain, faintly acid rain, and neutral rain, while Pb and Zn released most in neutral acid rain and faintly rain respectively.

关 键 词：建筑废物 重金属 酸雨 迁移转化 

分 类 号：X705[环境科学与工程—环境工程] X501