Analytical Model for Contaminant Transport in Composite Liners Considering the Longevity of Barrier Components

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2024-12-05 DOI:10.1007/s11270-024-07634-z

Haijian Xie, Peifu Cai, Huaxiang Yan, Hao Ding, Congcong Li

{"title":"Analytical Model for Contaminant Transport in Composite Liners Considering the Longevity of Barrier Components","authors":"Haijian Xie, Peifu Cai, Huaxiang Yan, Hao Ding, Congcong Li","doi":"10.1007/s11270-024-07634-z","DOIUrl":null,"url":null,"abstract":"<div><p>The pollution from landfills due to the leakage of leachate is an important source of groundwater contamination. The service life of geomembrane and high-permeability leachate collection system, which play a crucial role in the long-term effectiveness of landfill liner systems, can be greatly shortened due to the complex environmental conditions of landfills. The one-dimensional analytical model of contaminant transport in geomembrane and compacted clay composite liners considering the service life of geomembrane and leachate collection system is presented. Influences of the service life of geomembrane on contaminants transport are described by changing boundary conditions. Effects of the service life of leachate collection system are achieved by the fluctuated leachate head. An investigation into the influence of geomembrane and leachate collection system service life on the breakthrough of the composite liner is presented. An empirical formula for the prediction of breakthrough time considering the service life of geomembrane and leachate collection system is proposed, which may provide the reference for the preliminary design of composite liners. The proposed solution can capture the field observed data well. Both the total flux and concentration are underestimated by about three orders of magnitude and 47.5%, respectively, compared to the model that doesn’t consider the service life of geomembrane.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 1","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s11270-024-07634-z","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

The pollution from landfills due to the leakage of leachate is an important source of groundwater contamination. The service life of geomembrane and high-permeability leachate collection system, which play a crucial role in the long-term effectiveness of landfill liner systems, can be greatly shortened due to the complex environmental conditions of landfills. The one-dimensional analytical model of contaminant transport in geomembrane and compacted clay composite liners considering the service life of geomembrane and leachate collection system is presented. Influences of the service life of geomembrane on contaminants transport are described by changing boundary conditions. Effects of the service life of leachate collection system are achieved by the fluctuated leachate head. An investigation into the influence of geomembrane and leachate collection system service life on the breakthrough of the composite liner is presented. An empirical formula for the prediction of breakthrough time considering the service life of geomembrane and leachate collection system is proposed, which may provide the reference for the preliminary design of composite liners. The proposed solution can capture the field observed data well. Both the total flux and concentration are underestimated by about three orders of magnitude and 47.5%, respectively, compared to the model that doesn’t consider the service life of geomembrane.

查看原文本刊更多论文

考虑屏障部件寿命的复合衬垫中污染物迁移的分析模型

垃圾填埋场渗滤液泄漏造成的污染是地下水污染的重要来源。土工膜和高渗透渗滤液收集系统对填埋场衬垫系统的长期有效性起着至关重要的作用，但由于填埋场复杂的环境条件，土工膜和高渗透渗滤液收集系统的使用寿命可能会大大缩短。建立了考虑土工膜和渗滤液收集系统使用寿命的土工膜和压实粘土复合衬垫中污染物运移的一维分析模型。通过改变土工膜的边界条件，描述了土工膜的使用寿命对污染物运移的影响。渗滤液收集系统的使用寿命受到渗滤液水头波动的影响。研究了土工膜和渗滤液收集系统使用寿命对复合衬垫突破的影响。提出了考虑土工膜和渗滤液收集系统使用寿命的突破时间预测经验公式，可为复合衬垫的初步设计提供参考。该方案能较好地捕获现场观测数据。与不考虑土工膜使用寿命的模型相比，总通量和浓度分别低估了约3个数量级和47.5%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.