【作者】 马新月； 罗帅； 王东； 汪军； 刘元元；

【Author】 MA Xin-yue;LUO Shuai;WANG Dong;WANG Jun;LIU Yuan-yuan;School of Environment and Ecology,Chongqing University;Chongqing Huantou Renewable Resources Development Co.,Ltd.;Chongqing Solid Wastes Management Center;Chongqing Academy of Eco-environmental Science;

【机构】 重庆大学环境与生态学院； 重庆环投再生资源开发有限公司； 重庆市固体废物管理中心； 重庆市生态环境科学研究院；

【摘要】 本研究根据重庆市已开展调查评估的353块工业企业遗留场地数据,统计分析了重庆市工业场地的环境特征、土壤污染类型及其行业来源分布特点。结果表明,82.5%的场地土壤偏碱性,这有利于大部分重金属污染物的稳定;重庆市高风险场地共涉及23个行业,主要有化学原料和化学制品制造业、金属制品业、汽车制造业、铁路、船舶、航空航天和其他运输设备制造业等,这些行业企业的遗留场地土壤出现污染的比例达43%～57%;TPHs和铅、铜、铬、锌等重金属是重庆市场地土壤主要污染因子,出现污染的概率分别为38%～80%和65%～94%;重金属-TPHs复合污染是重庆市场地土壤的重要污染特征;铅、铜、铬、锌、镍、苯、苯并(a)芘、TPHs等典型污染物主要来源于化工、钢铁、电镀、冶炼等国家及重庆市重点行业,以及汽车制造业和铁路、船舶、航空航天和其他运输设备制造业等其他主要行业;铅、铜、铬、锌、镍五种重金属,苯和苯并(a)芘,铅、铜、铬、锌和TPHs之间呈显著正相关,表明这些污染物可能有着相似的行业来源。铜、铬、锌、镍主要受金属制品业和运输设备制造业的影响,铅和TPHs的行业来源分布比较广泛,表现出多行业的综合化,苯和苯并(a)芘主要受化学原料和化学制品制造业的污染排放影响。研究结果可为重庆市工业场地的土壤污染防治和风险管控提供科学依据。更多还原

【Abstract】 Based on the data of 353 industrial sites in Chongqing,the environmental characteristics,types of soil pollution and distribution characteristics of industrial sources in the industrial sites in Chongqing were analyzed statistically.The results show that 82.5% of the site soil is alkaline,which is conducive to the stability of most heavy metal pollutants.The high risk sites in Chongqing involve 23 industries,mainly including Chemical raw materials and chemical manufacturing;Metal products industry;Automotive Manufacturing;Railway,marine,aerospace and other transportation equipment manufacturing.The proportion of soil pollution in these industries is 43%～57%.Petroleum hydrocarbons and heavy metals such as lead,copper,chromium and zinc are the main pollution factors of high risk sites in Chongqing,and the proportion of pollution is 38%～80% and 65%～94% respectively.The combined pollution of heavy metals and petroleum hydrocarbons is an important pollution feature of industrial sites in Chongqing.Lead,copper,chromium,zinc,nickel,benzo(a)pyrene,petroleum hydrocarbons and other typical pollutants mainly come from chemical,steel,electroplating,smelting and other key industries of the Country and Chongqing,as well as automotive manufacturing and railway,marine,aerospace and other transportation equipment manufacturing and other major industries.There is a significant positive correlation between the five heavy metals of lead,copper,chromium,zinc and nickel,benzene and benzo(a)pyrene,lead,copper,chromium,zinc and TPHs,suggesting that there may be similar sources of industry.Copper,chromium,zinc and nickel are mainly affected by the metal products industry and transportation equipment manufacturing.The industrial sources of lead and TPHs are widely distributed,showing the integration of multiple industries.Benzene and benzo(a)pyrene are mainly affected by pollution emissions from chemical raw materials and chemical manufacturing.The results can provide scientific basis for prevention and control of soil pollution and risk control of industrial sites in Chongqing.更多还原