滨海平原区某生活垃圾填埋场地下水污染修复模拟

牛毅; 李炜; 李攻科; 王卫星; 李明明; 曹淑萍; 吕潇文

doi:10.13205/j.hjgc.202303002

滨海平原区某生活垃圾填埋场地下水污染修复模拟

doi: 10.13205/j.hjgc.202303002

1. 天津市地质环境监测总站, 天津 300191;
2. 天津市生态环境监测中心, 天津 300000;
3. 天津市地质调查研究院, 天津 300191

基金项目:

中央水污染防治专项资金(2019年地下水部分)

详细信息

作者简介:
牛毅(1984-),男,工程师,主要研究方向为地下水污染调查评价及地面沉降监测与防控。121616701@qq.com

通讯作者:
李炜(1988-),男,工程师,主要研究方向为地下水污染调查评价及土壤污染状况调查。lwlz01@163.com

计量
- 文章访问数: 244
- HTML全文浏览量: 40
- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2021-12-21
- 网络出版日期: 2023-05-26
- 刊出日期: 2023-03-01

SIMULATION OF RESTORATION OF GROUNDWATER POLLUTION IN A LANDFILL IN COASTAL PLAIN AREA

1. Tianjin Monitoring Central Station of Geological Environment, Tianjin 300191, China;
2. Tianjin Eco-Environmental Monitoring Center, Tianjin 300000, China;
3. Tianjin Institute of Geological Survey, Tianjin 300191, China

摘要

摘要: 渗滤液是垃圾填埋场区地下水的主要污染源。以滨海平原区某生活垃圾填埋场为例,采用MODFLOW/MT3D建立模型进行污染物的迁移模拟和修复模拟,模拟持续污染和清理污染源并配套抽水井的2种工况下,COD_Mn在浅层地下水中的迁移扩散特征。模拟结果表明:由于滨海平原区浅层地下水含水层渗透系数很小,水动力条件差,污染物主要影响埋深10 m以浅的2个含水层;持续泄漏将造成污染羽中污染物含量很高,但污染物向场外迁移扩散的距离却很有限,20年后污染物超出场界的迁移距离不超过70 m;设置抽水井可有效地清理污染物,但污染羽的清除速度很慢,需要5~10年的连续抽水方可使污染羽收缩至场内。实际修复中,可根据修复进展情况实时调整抽水井的运行和布设,关停已修复好区域的抽水井,同时加大污染中心抽水井的出水量,并在修复多年污染物浓度依然较高的地段增布抽水井,以加快污染修复速度。建立的污染物迁移和修复模拟模型可为其他相关垃圾填埋场地下水环境调查评估和污染治理提供参考与借鉴。
- 垃圾填埋场 /
- 滨海平原 /
- 地下水 /
- 数值模拟 /
- 污染修复
Abstract: Leachate is the main pollution source for groundwater in landfill areas. In this paper, a landfill in a coastal plain area was studied. The migration and remediation of pollutants in groundwater were simulated based on MODFLOW/MT3D modules. The studied working conditions included continuous pollution, cleaned pollution sources and supported pumping wells, and then we simulated the migration and diffusion characteristics of permanganate index in shallow groundwater. The simulation results showed that because of the very small permeability coefficient and the poor hydrodynamic conditions of shallow groundwater aquifers in the coastal plain area, the pollutants mainly affected two aquifers with a depth of less than 10 m; continuous leakage would result in a high content of pollutants in the groundwater plume, but the migration and diffusion distance of pollutants outside the site would be very limited, and after 20 years, the migration distance of pollutants beyond the site boundary would be less than 70 m; setting pumping wells can clean up pollutants effectively, but the groundwater plume removal speed would be very slow, and it would take 5 to 10 years of continuous pumping to shrink the groundwater plume into the site boundary. In the actual repair, the operation and layout of pumping wells can be adjusted according to the repair progress, the pumping wells in the repaired area can be closed, the water yield in the pollution centre can be increased, and pumping wells can be added in the sections with high pollutant concentration to speed up the pollution repair. The simulation model of pollutant transport and remediation established in this study can be used as a reference for the investigation and assessment of the groundwater environment and pollution control in other similar landfill sites.
- landfill /
- coastal plain /
- groundwater /
- numerical simulation /
- pollution remediation

HTML全文

参考文献(25)

[1]	徐文龙,卢英方,Rudolf Walder,等.城市生活垃圾管理与处理技术[M]. 北京:中国建筑工业出版社,2006.
[2]	刘长礼.城市垃圾地质环境影响调查评价方法[M]. 北京:地质出版社,2006.
[3]	SCHARFF H,ZOMEREN A. Landfill sustainability and aftercare completion criteria[J].Waste Management Research,2011,29(1):30-40.
[4]	LANER D, FELLNER J, BRUNNER P H. Site-specific criteria for the completion of landfill aftercare[J].Waste Management Research,2012,30(9):88-99.
[5]	雷抗,李瑞,李鸣晓,等.海积平原区浅层地下水污染在线监测预警指标的确定:以天津市某简易生活垃圾填埋场为例[J].环境工程,2018,36(11):179-184.
[6]	马仕君,周传斌,杨光,等.城市生活垃圾填埋场的物质存量特征及其环境影响:以粤港澳大湾区为例[J].环境科学,2019,40(12):5593-5603.
[7]	旦增,周鹏,周文武,等.西藏日喀则市垃圾填埋场地下水环境质量评价[J].环境工程,2019,37(5):200-205.
[8]	贾超,杨霄,刘森,等.基于指数分析和GIS方法的垃圾填埋场地下水环境影响分析[J].环境工程,2021,39(4):155-163.
[9]	骆成杰,刘建,刘丹,等.某红层地区临河非正规生活垃圾填埋场地下水污染与修复模拟[J]. 环境工程,2013,36(10):24-29.
[10]	杨文韬.基于Com GIS的垃圾填埋场地下水污染模拟与预测[D].合肥:合肥工业大学,2018.
[11]	刘国,李妍颖,范全忠,等.基于Visual MODFLOW的垃圾填埋场阻隔墙设计及效果评估[J]. 环境工程,2020,38(6):137-142.
[12]	马敏杰,付乐意,谭燕,等.镇江新区垃圾填埋场地下水溶质运移模拟[J].矿产与地质,2020,34(5):1001-1008.
[13]	MIN J E, KIM M, KIM J Y, et al. Leachate modeling for a municipal solid waste landfill for upper expansion[J]. Ksce Journal of Civil Engineering, 2010, 14(4):473-480.
[14]	ZHOU Y, JIANG Y H, AN D, et al. Simulation on forecast and control for groundwater contamination of hazardous waste landfill[J]. Environmental Earth Sciences, 2014, 72(10):4097-4104.
[15]	廖镭,张涵,郭珊珊.简易垃圾填埋场渗滤液地下水溶质运移数值模拟[J].安全与环境工程,2019,26(2):76-83.
[16]	赵卫东,魏超,卫佳佳,等.基于GIS的垃圾填埋场渗滤液环境影响评价[J].安全与环境学报,2019,19(4):1431-1438.
[17]	高绍博,李瑞,席北斗,等.海积平原区某非正规垃圾填埋场地下水氨氮污染模拟研究[J].环境科学学报,2019,39(10):3535-3541.
[18]	杜越,KO J H,黄丹丹,等.模拟生活垃圾填埋反应器堆体底部抽气对污染气体排放的控制[J].环境工程学报,2020,14(11):3182-3191.
[19]	刘欣,王君燕.非正规建筑垃圾场地空间布局特征研究:以北京市昌平区为例[J].环境工程,2021,39(12):193-198 ,233.
[20]	易立新,徐鹤.地下水数值模拟GMS应用基础与实例[M].北京:化学工业出版社,2009.
[21]	王飞.松散岩类孔隙介质水动力弥散规律及其空间尺度效应研究[D].成都:西南交通大学,2015.
[22]	YIHDEGO Y, RETA G, BECHT R. Human impact assessment through a transient numerical modeling on the UNESCO World Heritage Site,Lake Naivasha,Kenya[J]. Environmental Earth Sciences,2017,76(1):1-16.
[23]	张小文,袁伟,王川,吉林省长山水源地主要含水层野外弥散试验研究[J].城市地质,2020,15(4):394-403.
[24]	张汝壮.基于GMS的某非正规垃圾填埋场地下水污染的模拟研究[J].环境卫生工程,2020,28(3):75-79.
[25]	孙从军,韩振波,赵振,等.地下水数值模拟的研究与应用进展[J].环境工程,2013,31(5):9-13 ,17.