北运河流域土沟段地下水水力截获效果评估
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摘要
选择北运河流域土沟段于2016年开展为期69 d的水力截获试验。结果表明:20 m含水层降深为2 m,影响半径为80.2 m;60 m含水层降深为1.54 m,影响半径为150.6 m。试验期间,多数地下水水质指标浓度呈下降趋势,其中硫酸盐浓度下降幅度达57.9%,痕量有机污染物—邻苯二甲酸(2-乙基己基)酯的最大下降幅度达96.3%。污染物浓度的变化与其所在含水层介质中发生的稀释作用、阳离子交换吸附及黏土矿物的吸附作用等密不可分。试验结果表明水力截获试验可有效控制和修复地下水污染。
A 69-day hydraulic capture test was conducted in Tugou section of the Beiyun River Basin.The results showed that the groundwater level drawdown and influence radius of 20 m aquifers were 2 m and 80.2 m,while those of 60 m aquifers were 1.54 m and 150.6 m.During the test period,the concentration of most groundwater quality indicators showed a downward trend,of which sulfate concentration decreased by 57.9%,and the concentration of trace organic pollutant,phthalate ester(2-ethylhexyl),decreased by 96.3%.The change of pollutant concentration was closely related to dilution,cation exchange adsorption and clay mineral adsorption in aquifer media.The test results show that the hydraulic capture test can effectively control and remedy groundwater pollution.
A 69-day hydraulic capture test was conducted in Tugou section of the Beiyun River Basin.The results showed that the groundwater level drawdown and influence radius of 20 m aquifers were 2 m and 80.2 m,while those of 60 m aquifers were 1.54 m and 150.6 m.During the test period,the concentration of most groundwater quality indicators showed a downward trend,of which sulfate concentration decreased by 57.9%,and the concentration of trace organic pollutant,phthalate ester(2-ethylhexyl),decreased by 96.3%.The change of pollutant concentration was closely related to dilution,cation exchange adsorption and clay mineral adsorption in aquifer media.The test results show that the hydraulic capture test can effectively control and remedy groundwater pollution.
引文
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[3]张文静,董维红,苏小四,等.地下水污染修复技术综合评价[J].水资源保护,2006,22(5):1-4.(ZHANGWenjing,DONG Weihong,SU Xiaosi,et al.Comprehensive evaluation of groundwater remediation technologies[J].Water Resources Protection,2006,22(5):1-4.(in Chinese))
[4]刘玲,徐文彬,甘树福.PRB技术在地下水污染修复中的研究进展[J].水资源保护,2006,22(6):76-80.(LIULing,XU Wenbin,GAN Shufu.Study on permeable reactive barrier for remediation of groundwater contamination[J].Water Resources Protection,2006,22(6):76-80.(in Chinese))
[5]郭高轩.地下水有机物污染修复标准探讨[J].水资源保护,2011,27(2):37-41.(GUO Gaoxuan.Discussion of establishment of remediation standards for organiccontaminated groundwater[J].Water Resources Protection,2011,27(2):37-41.(in Chinese))
[6]顾栩,杜鹏,单慧媚,等.水力截获技术在地下水污染修复中的应用:以某危险废物填埋场为例[J].安全与环境工程,2014,21(4):52-58.(GU Yi,DU Peng,SHANHuimei,et al.Application of hydraulic intercepttechnology in groundwater contamination remediation:taking a hazardous waste landfill as an example[J].Safety and Environmental Engineering,2014,21(4):52-58.(in Chinese))
[7]荆红卫,张志刚,郭婧.北京北运河水系水质污染特征及污染来源分析[J].中国环境科学,2013,33(2):319-327.(JING Hongwei,ZHANG Zhigang,GUO Jing.Water pollution characteristics and pollution sources of Bei Canal river system in Beijing[J].China Environmental Science,2013,33(2):319-327.(in Chinese))
[8]魏亮,郭华明,谢振华,等.北京平原包气带典型沉积物对NH+4-N吸附特性研究[J].水文地质工程地质,2012,39(1):81-88.(WEI Liang,GUO Huaming,XIEZhenhua,et al.Adsorption characteristics of typical sediments from unsaturated zone of Beijing Plain,China[J].Hydrogeology&Engineering Geology,2012,39(1):81-88.(in Chinese))
[9]杨悦锁,王园园,宋晓明,等.土壤和地下水环境中胶体与污染物共迁移研究进展[J].化工学报,2017,68(1):23-36.(YANG Yueqing,WANG Yuanyuan,SONGXiaoming,et al.Co-transport of colloids and facilitated contaminants in subsurface environment[J].Acta Chemical Industry,2017,68(1):23-36.(in Chinese))
[10]张晶,何江涛,曲雪妍,等.包气带土壤组成对三氯乙烯的吸附影响研究[J].岩石矿物学杂志,2010,29(4):439-444.(ZHANG Jing,HE Jiangtao,QU Xueyan,et al.The influence of soil constitution on the sorption of trichloroethylene in the vadose zone[J].Acta Petrologica Et Mineralogica,2010,29(4):439-444.(in Chinese))
[11]张翠云,张胜,何泽,等.河北省石家庄市南部污灌区厚层包气带污染物自然衰减的微生物作用潜力评价[J].地球学报,2014,35(2):223-229.(ZHANG Cuiyun,ZHANG Sheng,HE Ze,et al.Assessment of microbial process potential for natural attenuation of contaminants in the thick vadose zone beneath the wastewater-irrigated area of southern Shijiazhuang City,Hebei Province[J].Acta Geoscientica Sinica,2014,35(2):223-229.(in Chinese))
[12]JESSICA F C,BAGTZOGLOU A,WILLIG M.The effect of soil texture on richness and diversity of bacterial communities[J].Environmental Forensics,2011,12(4):333-341.
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[16]左锐,马丁山,刘丽,等.傍河水源地氨氮分布特征及其影响因素分析[J].北京师范大学学报(自然科学版),2015,51(6):626-630.(ZUO Rui,MA Dingshan,LIU Li,et al.Distribution of ammonia nitrogen in riverside water source field and identification of influencing factors[J].Journal of Beijing Normal University(Natural Science),2015,51(6):626-630.(in Chinese))
[17]贾文飞,杨洋,赵阳,等.潮白河地下水调蓄区水岩作用过程模拟[J].南水北调与水利科技,2016,14(1),143-148.(JIA Wenfei,YANG Yang,ZHAO Yang,et al.Construction of water-rock process in groundwater regulation area of Chaobai River[J].South-to-North Water Diversion and Water Conservancy,2016,14(1),143-148.(in Chinese))
[18]郑凡东,刘立才,杨牧骑,等.南水北调水源北京西郊回灌的水岩相互作用模拟[J].水文地质工程地质,2012,39(6):22-28.(ZHENG Fandong,LIU Licai,YANGMuqi,et al.Simulation of water-rock interaction in the injection of water from the South-to-North Diversion Project to the aquifer in the western suburb of Beijing[J].Hydrogeology and Engineering Geology,2012,39(6):22-28.(in Chinese))
[19]李霄,柴璐,王红岩,等.辽西地下水化学影响指标的水岩作用分析[J].生态学杂志,2016,35(10):2804-2813.(LI Xiao,CHAI Lu,WANG Hongyan,et al.Water-rock effect analysis on the impact factors of groundwater chemistry of Huludao City,West Liaoning Province[J].Chinese Journal of Ecology,2016,35(10):2804-2813.(in Chinese))
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