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Characteristics and evaluation on heavy metal contamination in Changchun municipal waste landfill after closure

机译:封闭后长春市生活垃圾填埋场重金属污染特征及评价

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In the present study, comprehensive investigation on the spot and typical investigation method were used to assess Mn, Zn, Pb, Cd, Cr, Ni, As and Cu level, pH value, organic matter, total nitrogen and total phosphorus contents in soil of Changchun municipal waste landfill. The results showed that soil in the closure area of Changchun municipal waste landfill was alkaline in nature and the average value of organic matter, total nitrogen and total phosphorus contents were lower than that in normal black soil in Changchun City of Jilin Province. Single factor indices of As, Pb and Cr content was > 1, where P-As was 1.131, P-Pb 1.061 and P-cr 1.092 mildly contaminated. In different sample spots but the same landfill time, the comprehensive Nemerow contamination indexes of 7a (5 #) and 7a (2 #) were P-2 comprehensive = 1.176 and P-5 comprehensive = 1.229. The performance value of of heavy metal contamination in soil was similar and there was a low ecological risk.
机译:本研究采用现场综合调查和典型调查方法评估了土壤中锰,锌,铅,镉,铬,镍,砷和铜含量,pH值,有机质,总氮和总磷含量长春市垃圾填埋场。结果表明,长春市生活垃圾填埋场封闭区的土壤性质为碱性,吉林省长春市的有机质,总氮和总磷含量均低于正常黑土。 As,Pb和Cr含量的单因素指数> 1,其中P-As为1.131,P-Pb 1.061和P-cr 1.092被轻度污染。在不同的采样点但垃圾填埋时间相同的情况下,Nemerow的7a(5#)和7a(2#)的综合污染指数为P-2综合= 1.176和P-5综合= 1.229。土壤中重金属污染的表现值相近,生态风险低。

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