Page 199 - 《环境工程技术学报》2022年第5期
P. 199
Vol.12,No.5 环 境 工 程 技 术 学 报 第 12 卷,第 5 期
Sep.,2022 Journal of Environmental Engineering Technology 2022 年 9 月
李书迪,谢湉,张荣海,等.西南某退役化工厂场地地下水污染特征及污染物迁移规律分 析 [J].环境工程技术学报,2022,12(5):1555-1563.
LI S D,XIE T,ZHANG R H,et al.Analysis of groundwater pollution characteristics and pollutant migration law of a decommissioned chemical plant site in
Southwest China[J].Journal of Environmental Engineering Technology,2022,12(5):1555-1563.
西南某退役化工厂场地地下水污染特征及
污染物迁移规律分析
李书迪 ,谢湉 1,2* ,张荣海 ,张芊 ,苏丽丽 ,张德明 ,黄锦孙 ,周永信 1*
1,3
1
1
1
1
1
1.广西博世科环保科技股份有限公司
2.华南理工大学环境与能源学院
3.桂林理工大学环境科学与工程学院
摘要 针对某退役化工厂场地受有机物污染的地下水含水层,开展地下水污染特征调查,通过风险评价模型、DRASTI 模型分
C
别对研究区进行人体健康风险及地下水脆弱性评价,构建污染物地下水迁移扩散模型,进一步剖析典型污染物迁移扩散的影响
−6
因素及动力学模式。结果表明:研究区地下水 受 1,2-二氯乙烷、苯、三氯甲烷的污染,1,2-二氯乙烷的总致癌风险 为 4.00×10 ,超
过人体健康风险可接受水平,主要暴露途径为吸入室内空气中来自地下水的气态污染物;研究区地下水脆弱性指数为
4.912~5.305,整体处于中等脆弱性水平,地下水系统抵御污染能力较强,地下水埋深、净补给量和含水层厚度是影响地下水脆
弱性的主要因素;1,2-二氯乙烷迁移扩散受地下水对流作用、含水介质吸附阻滞作用、生物化学作用共同影响,地下水对流作用
是其迁移扩散的主要动力,含水介质吸附阻滞作用及生物化学作用对于其分布范围影响显著。
关键词 化工污染场地;地下水;风险评估;脆弱性评估;迁移动力学
中图分类号:X523 文章编号:1674-991X(2022)05-1555-09 doi:10.12153/j.issn.1674-991X.20210382
Analysis of groundwater pollution characteristics and pollutant migration law of a
decommissioned chemical plant site in Southwest China
1
1
1,3
1
LI Shudi , XIE Tian 1,2* , ZHANG Ronghai , ZHANG Qian , SU Lili ,
1
1
ZHANG Deming , HUANG Jinsun , ZHOU Yongxin 1*
1.Guangxi Bossco Environmental Protection Technology Co., Ltd.
2.School of Environment and Energy, South China University of Technology
3.College of Environmental Science and Engineering, Guilin University of Technology
Abstract Taking a decommissioned chemical site as the research object, in view of the organically polluted
groundwater aquifer in it, the groundwater pollution characteristics were investigated. The risk assessment model
and DRASTIC model were applied to evaluate the human health risk and groundwater vulnerability in the study
area, respectively, and the groundwater migration and diffusion model of typical pollutants was constructed to
further analyze the influencing factors and dynamic modes of the migration and diffusion of typical pollutants. The
results showed that the groundwater in the study area was polluted by 1,2-dichloroethane, benzene and
−6
trichloromethane. The total carcinogenic risk of 1,2-dichloroethane was 4.00×10 , exceeding the acceptable level of
human health risk, which was mainly caused by inhaling gaseous pollutants from groundwater in indoor air. The
groundwater vulnerability index of the study area ranged from 4.912 to 5.305, which was at the medium
vulnerability level as a whole. The groundwater system had a strong ability to resist pollution. The groundwater
depth, net recharge and aquifer thickness were the main factors affecting groundwater vulnerability. The migration
收稿日期:2021-08-04
基金项目:国 家 重 点 研 发 计 划 项 目 (2020YFC1807104) ; 广 西 重 点 研 发 计 划 项 目 ( 桂 科 AB18281002) ; 广 西 自 然 科 学 基 金 项目
(2019GXNSFAA185019)
作者简介:李书 迪 (1994—),男,工程师,硕士,主要研究方向为土壤及地下水调查和修复,lishudi1017@hotmail.com
* 责任作者:1.谢 湉 (1983—),女,高级工程师,博士,主要研究方向为土壤及地下水调查和修复,tianckstar@163.com
2.周永 信 (1981—),男,高级工程师,硕士,主要研究方向为土壤及地下水调查和修复,zhouyx@bossco.cc