农田土壤重金属污染风险及治理措施研究  

Risk and Control Measures of Heavy Metal Pollution in Farmland Soil

作　　者：张雅静 Zhang Yajing(Guangdong Provincial Academy of Environmental science,Guangzhou 510045,China;Guangdong Provincial Academy of Environmental Science Environmental Technology Co.,Ltd.,Guangzhou 510045,China)

机构地区：[1]广东省环境科学研究院,广东广州510045 [2]广东环科院环境科技有限公司,广东广州510045

出　　处：《环境科学与管理》2024年第1期67-71,共5页Environmental Science and Management

摘　　要：针对农田土壤重金属污染严重的问题,提出一种基于风险评价的治理措施。采用单因子污染指数法建立综合环境实际污染风险评价方程,利用Hakanson指数法建立潜在环境污染风险评价方程,联立方程组,将重金属污染敏感度、多元素协同合作、平均污染浓度以及毒性水平作为污染风险评价指标。实验以广东省农田土壤情况为基础,使用换土法、有机农业化肥生态修复法、微生物治理法以及土壤改良剂法,根据风险评价结果针对不同情况给出针对性治理措施。实验结果证明,所提风险评价精准度高,治理措施能够有效去除土壤中的重金属污染。A risk assessment based governance measure is proposed to address the serious problem of heavy metal pollution in farmland soil.The single factor pollution index method is used to establish a comprehensive environmental actual pollution risk assessment equation,and the Hakanson index method is used to establish a potential environmental pollution risk assessment equation.A set of simultaneous equations is established,with heavy metal pollution sensitivity,multi-element collaborative cooperation,average pollution concentration,and toxicity level as pollution risk assessment indicators.The experiment is based on the soil conditions of farmland in Guangdong Province,using soil replacement method,organic agricultural fertilizer ecological restoration method,microbial treatment method,and soil amendment method.Based on the risk assessment results,targeted treatment measures are provided for different situations.The experimental results demonstrate that the proposed risk assessment has high accuracy and the control measures can effectively remove heavy metal pollution in the soil.

关 键 词：重金属污染 生态修复 微生物治理 Hakanson指数法 

分 类 号：X53[环境科学与工程—环境工程]