PRB不同填料配比对酸性老窑水去除效果的试验研究  

Study on Removal Effects of Acid Mine Drainage Using Different Filler Ratios of Permeable Reactive Barriers

作　　者：赵润苛 张永波[1] 李京玲[1] 陶永江 时红[2] 吴艾静 ZHAO Run-ke;ZHANG Yong-bo;LI Jing-ling;TAO Yong-jiang;SHI Hong;WU Ai-jing(College of Water Resources Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;College of Environment and Ecology,Taiyuan University of Technology,Jinzhong 030600,China;Shanxi Institute of Energy,Jinzhong 030600,China)

机构地区：[1]太原理工大学水利科学与工程学院,山西太原030024 [2]太原理工大学环境与生态学院,山西晋中030600 [3]山西能源学院,山西晋中030600

出　　处：《水电能源科学》2025年第2期58-62,共5页Water Resources and Power

基　　金：国家重点研发计划(2018YFC0406403);山西省应用基础研究计划项目(20210302123192);山西省基础研究计划资助项目(202303021211048,201901D111059);山西省回国留学人员科研资助项目(2023-051)。

摘　　要：酸性老窑水对区域水资源及生态环境具有潜在风险,因此治理酸性老窑水已迫在眉睫。为了探究渗透反应墙(PRB)不同填料配比对酸性老窑水去除效果的影响,选取钢渣-黄土混合物、活性炭、石灰石进行不同配比,对酸性老窑水中典型污染物(SO_(4)^(2-)、Fe、Mn、Zn、Cu)进行土柱淋滤试验;同时研究了SO_(4)^(2-)的初始浓度对最优配比组合去除酸性老窑水的影响,并进一步分析不同填料层对污染物去除效果的差异。结果表明,对酸性老窑水去除效果最好的填料组合为组合4(钢渣-黄土、活性炭、石灰石的体积比为2∶1∶1),相比其他3种填料配比组合,组合4对污染物的平均去除率分别提高了13.43%、20.24%、28.25%;组合4对中浓度组中SO_(4)^(2-)的去除效果最好,去除率稳定在83%左右,对金属离子的去除效果比较稳定;对Fe来说,组合4中活性炭层的去除效果最好,平均去除贡献率为39.33%;对SO_(4)^(2-)、Mn、Zn、Cu而言,组合4中钢渣-黄土层的去除效果最好,平均去除贡献率分别为56.67%、70.00%、70.33%、68.67%。因此,推荐组合4作为酸性老窑水污染物去除效果最优的填料组合,可将其应用至当地酸性老窑水治理中。The treatment of acid mine drainage is urgent as it poses potential risks to regional water resources and the ecological environment.In order to investigate the effect of different filler ratios of permeable reactive barrier(PRB)on the removal effect of acid mine drainage,steel slag-loess mixture,activated carbon and limestone were selected for the soil column leaching experiment of typical pollutants(SO_(4)^(2-),Fe,Mn,Zn,Cu)in acid mine drainage with different filler ratios.The effect of initial SO_(4)^(2-)concentration on the removal of acid mine drainage by the optimal combination of ratios was investigated,and the differences in the pollutant removal effects of different filler layers were further investigated.The results show that the best filling combination for the removal of mine drainage was combination 4(with a volume ratio of 2∶1∶1 for steel-slag loess,activated carbon and limestone).Compared to the other three filling combinations,combination 4 increased the average removal of pollutants by 13.43%,20.24%and 28.25%,respectively.The removal efficiency of combination 4 on SO_(4)^(2-)was the best in the medium concentration group,with a stable removal rate of around 83%and a relatively stable removal effect on metal ions.For Fe,the removal effect of the activated carbon layer in combination 4 was the best,with an average removal contribution rate of 39.33%;For SO_(4)^(2-),Mn,Zn and Cu,the removal effect of the steel-slag loess layer in combination 4 was the best,with average removal contribution rates of 56.67%,70.00%,70.33%and 68.67%,respectively.Therefore,it is recommended to use combination 4 as the filling combination with the best removal effect for acidic old kiln water pollutants in local acid mine drainage treatment.

关 键 词：酸性老窑水 填料配比 PRB SO_(4)^(2-) 重金属离子 去除效果 

分 类 号：X703[环境科学与工程—环境工程]