有色冶金企业铁路货场场地污染分析

Pollution analysis of railway freight yard of a non-ferrous metallurgical enterprise

铁路货场作为某些大型冶金企业早期建设的原料和产品中转站,存在较大的环境安全隐患,其场地环境污染状况缺少报道。本文调查分析了有色冶金铁路货场污染状况,分别对货场场地进行污染识别,并对场地及周边的土壤和地下水进行检测分析。结果表明,采集自21个土壤监测点的28个土壤样品中砷和铅两种重金属超土壤质量标准(GB 36600-2018)筛选值,但没有超过管控值,其中砷的超标率为14.3%,铅的超标率为10.7%。所采集的2个地下水祥品检测分析得到该区城水质除肉眼可见物、微生物指标总大肠菌群、菌落总数超过Ⅲ类地下水水质标准(GB 14848-2017),其余指标基本低于Ⅲ类地下水水质标准限值。本文所述的货场场地污染状况分析将为有色行业场地环境治理提供更加全面的参考。

As a transfer station for raw materials and products built by some large metallurgical enterprises in the early stage,railway fright yard had greal potential environmental safely hazards.and is sile environmental plluion was lack of reports.This paper investigated and analyzed the pollution status of non-ferrous metallurgical railway freight yard,identified the pollution of freight yard,and detected and analyzed the soil and groundwater around the site.The results showed that arsenic and lead in 28 soil samples ollected from 21 soil monitoring points excceded the screening value of soil quality standard(CB 36600-2017),but did not exceed the control value,in which the over standard rate of arsenic and lead was 14.3%and 10.7%.Acording to the detection and analysis of the two ollected groundwater samples,the water quaity in this area was basically lower than the limit of class Ⅲ groundwaler quality standard,except that the visible objecs.microbial indicators.total coliform and total bacterial count exceeded the class Ⅲ groundwater quality standard(CB 14848-2017).The analysis of the pollution situation of freight yard site deseribed in this paper would prov ide a more comprehensive reference for the envirnmental Irealment of non-ferrour industry site.