基于MATLAB与TMVOC联用的多相抽提工艺参数优化研究  

Optimization of Multi-Phase Extraction Process Parameters Based on MATLAB and TMVOC

作　　者：杨逸文 金嘉路 崔长征[2] 李敏 张婉莹 杨洁 YANG Yiwen;JIN Jialu;CUI Changzheng;LI Min;ZHANG Wanying;YANG Jie(Ministry of Ecology and Environment Engineering Center for Urban Soil Contamination Control and Remediation,Shanghai Academy of Environmental Sciences,Shanghai 200233,China;Ministry of Ecology and Environment Key Laboratory of Environmental Risk Assessment and Control on Chemical Process,Shanghai Key Laboratory of Environmental Standards and Risk Management of Environmental Protection Chemical Pollutants,School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China;College of Environmental Science and Engineering,Yangzhou University,Yangzhou 225009,China)

机构地区：[1]上海市环境科学研究院,生态环境部城市土壤污染控制与修复工程技术中心,上海200233 [2]华东理工大学资源与环境工程学院,生态环境部化工过程环境风险评价与控制重点实验室,上海市环境保护化学污染物环境标准与风险管理重点实验室,上海200237 [3]扬州大学环境科学与工程学院,江苏扬州22500

出　　处：《环境科学研究》2025年第2期366-375,共10页Research of Environmental Sciences

基　　金：上海市土壤污染状况调查、风险管控和修复全过程监管技术规范与管理制度研究(沪环科[2023]第7号项目);2022年东方英才计划领军项目(第十六批上海领军人才,编号135)。

摘　　要：TMVOC作为一款能模拟挥发性有机污染物在非均质介质中三相流动的软件,在土壤与地下水修复领域被广泛应用。为优化实际工程中多相抽提(MPE)的修复方案,本研究借助TMVOC软件对某1,4-二氯苯污染场地进行三维模型概化,再现1,4-二氯苯在非均质介质中的污染分布,并模拟MPE修复的过程;通过编写的MATLAB优化算法与TMVOC软件联用,在三维空间内对抽提井的布设方案和负压参数进行了优化,探究布设方案、负压参数对污染物去除率和修复成本的影响;此外,使用编写的MPE运行参数分工段优化算法进一步优化了多个修复工段的负压参数。结果表明:相较于抽提井间距为3 m时均匀布井方案下1,4-二氯苯的去除率为57.1%,经优化后的三维布井开筛方案不仅在同等修复时间内将污染物去除率提高了45.5%,还在去除机制上促进了NAPL相污染物向气相、液相的转化,且向气相转化的趋势更明显。抽提负压参数优化后的方案能进一步缩短25.0%的修复时间并节省13.5%的修复总成本,抽提井负压的增加在修复前期能更大程度加快液相污染物的去除并促进液相、NAPL相污染物向气相的转化。最后,经运行参数分工段优化算法求解所得的最优方案,进一步缩短了4.1%的修复时间并节省8.4%的修复总成本。研究显示,基于MATLAB与TMVOC开发的优化算法能与场地污染羽的浓度和位置分布相结合,为实际工程中MPE修复的布井方案、负压参数和运行参数的优化提供指导,实现场地修复工程的降本增效与低碳。TMVOC software can simulate the three-phase flow of volatile organic pollutants in heterogeneous media and is widely used in the field of soil and groundwater remediation.To optimize the multi-phase extraction(MPE)remediation program in actual projects,this study used TMVOC software to generalize a 1,4-dichlorobenzene contaminated site,show the pollution distribution of 1,4-dichlorobenzene in heterogeneous media,and simulate the MPE remediation process.Afterwards,the layout scheme and pressure parameters of extraction well were optimized in the three-dimensional space using the MATLAB optimization program and TMVOC software to investigate the influence of extraction well layout and pressure parameters on pollutant removal rate and restoration cost.In addition,the pressure parameter in multiple remediation periods was further optimized by self-written parameter optimization algorithm of MPE.The results showed that compared with the removal rate of 1,4-dichlorobenol in uniformly distributed well with well spacing of 3 m(i.e.,57.1%),the optimized well layout not only increased the pollutant removal rate by 45.5%in the same restoration time,but also promoted the transformation of NAPL phase pollutants to gas and liquid phase.And the trend of gas phase transformation was more obvious.Optimization of extraction negative pressure parameters further reduced the remediation time and the total remediation cost by 25.0%and 13.5%,respectively.The increase of negative pressure in extraction well could accelerate the removal of liquid phase pollutants and promote the conversion of liquid phase and NAPL phase pollutants to gas phase to a greater extent in the early stage of remediation.Finally,the optimal scheme of multiple remediation periods further reduced the remediation time and the total remediation cost by 4.1%and 8.4%,respectively.The study shows that the optimization algorithm developed based on MATLAB and TMVOC can be combined with the concentration and location distribution of the site contamination plume to provide

关 键 词：多相抽提 污染场地修复 优化算法 MATLAB TMVOC 

分 类 号：X53[环境科学与工程—环境工程]