地下水污染黏土基原位阻隔材料兼容性能研究  

Study on chemical compatibility of in-situ clay-based barrier materials for groundwater pollution

作　　者：李琴 唐红梅 黎建刚 邓同辉 赵勇胜 LI Qin;TANG Hongmei;LI Jiangang;DENG Tonghui;ZHAO Yongsheng(Institute of Energy Research,Jiangxi Academy of Sciences,Nanchang Jiangxi 330096;College of New Energy and Environment,Jilin University,Changchun Jilin 130021;National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology,Jilin University,Changchun Jilin 130021)

机构地区：[1]江西省科学院能源研究所,江西南昌330096 [2]吉林大学新能源与环境学院,吉林长春130021 [3]吉林大学石油化工污染场地控制与修复技术国家地方联合工程实验室,吉林长春130021

出　　处：《环境污染与防治》2022年第9期1127-1132,1137,共7页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.42072270);江西省科学院科研开发专项基金博士项目(No.2020-YYB-11)。

摘　　要：通过一系列兼容性实验研究在酸性、碱性、盐、有机污染环境下黏土基阻隔材料渗透系数的变化规律。结果表明,在pH=1.0的H_(2)SO_(4)溶液和柴油作用下,黏土基阻隔材料渗透系数增大,且无法满足垂直阻隔墙渗透系数要求。400.00、4000.00 mg/L Ca^(2+)溶液,pH=13.0的NaOH溶液,pH为2.0、3.0的H_(2)SO_(4)溶液和苯酚溶液对渗透系数影响相对较小。因此,黏土基阻隔材料适用于pH为2.0~13.0的地下水环境、阳离子质量浓度不大于4000.00 mg/L的盐环境及无自由相溶解性有机污染环境,不适用于可流动自由相有机污染环境。The change law of permeability coefficient of clay-based barrier materials in acidic,alkaline,saline and organic pollution environment was studied through a series of compatibility experiments.The results showed that permeability coefficient of clay-based barrier materials increased under H_(2)SO_(4)with pH=1.0 or diesel oil,which could not meet the requirement of permeability coefficient of vertical engineered barrier.The solution of 400.00 and 4000.00 mg/L Ca^(2+),NaOH with pH=13.0,H_(2)SO_(4)with pH of 2.0 and 3.0 and phenol had relatively little influence on the permeability coefficient of clay-based barrier materials.Therefore,the clay-based barrier materials were applicable to the groundwater environment with pH of 2.0-13.0,the salt environment with cation mass concentration no more than 4000.00 mg/L and the dissolving organic pollution environment without free phase,but not suitable to the pure phase organic pollution environment.

关 键 词：地下水污染 黏土基阻隔材料 兼容性能 

分 类 号：X523[环境科学与工程—环境工程]