| 中国典型有机污染场地土层岩性和污染物特征分析 |
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| 引用本文： | 朱辉,叶淑君,吴吉春,徐海珍. 中国典型有机污染场地土层岩性和污染物特征分析[J]. 地学前缘, 2021, 28(5): 26-34. DOI: 10.13745/j.esf.sf.2021.2.15 |
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| 作者姓名： | 朱辉 叶淑君 吴吉春 徐海珍 |
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| 作者单位： | 南京大学地球科学与工程学院,江苏南京210046;北京建工环境修复股份有限公司,北京100045 |
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| 基金项目： | 国家重点研发计划项目(2018YFC1802501) |
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| 摘 要： | 目前我国存在大量待修复场地,其分布具有一定的规律性和区域性,场地地层系统结构复杂、渗透性空间异质性显著,污染物种类复杂。总结场地典型土层结构和典型污染物有助于有针对性地开展修复技术的研发。为此,本文收集并整理了全国136处有机污染场地相关资料,对其地域性、地层及污染物特征总结如下:目前我国已经开展调查与修复的有机污染场地主要集中在京津冀和沪宁杭地区;有机污染场地土层基本都含有黏土等低渗透介质,而且都具有非均质性,其中67%场地土层有强非均质性;沪宁杭地区场地土层渗透性总体低于京津冀和辽中南地区,此外我国京津冀和辽中南地区场地调查深度(20.3 m)总体大于沪宁杭地区(12.8 m);我国有机污染场地地下水中最常见的有机污染物种类为氯代溶剂,依次为氯代烷烃类(场地数量占比84%)、氯代苯类(场地数量占比46%)和氯代烯烃类(场地数量占比33%);最常见的3种氯代溶剂依次为二氯乙烷、一氯苯和三氯甲烷。
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| 关 键 词： | 有机污染 污染场地 土层岩性 氯代溶剂 地下水 中国 |
| 收稿时间： | 2020-04-28 |
Characteristics of soil lithology and pollutants in typical contamination sites in China |
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| ZHU Hui,YE Shujun,WU Jichun,XU Haizhen. Characteristics of soil lithology and pollutants in typical contamination sites in China[J]. Earth Science Frontiers, 2021, 28(5): 26-34. DOI: 10.13745/j.esf.sf.2021.2.15 |
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| Authors: | ZHU Hui YE Shujun WU Jichun XU Haizhen |
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| Affiliation: | 1. School of Earth Sciences and Engineering, Nanjing University, Nanjing 210046, China2. Beijing Construction Engineering Environmental Remediation Co., Ltd., Beijing 100045, China |
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| Abstract: | There are massive contaminated sites with distinct distribution pattern and regional characteristics need to be remediated in China. In order to develop suitable remediation techniques, it is necessary to understand the complexity of the aquifer system, the heterogeneity of the media and the complexity of the contaminants at each site. In this paper, we summarized the data of 136 organic contamination sites in China, focusing on the characteristics of site distribution, soil layers and contaminants. At present, the remediation projects for organic contamination sites are mainly concentrated in the Beijing-Tianjin-Hebei and Shanghai-Nanjing-Hangzhou areas. Heterogeneous soil layers are found in all organic contamination sites and they contain low-permeable media such as clay. Sixty-seven percent of the soil layers and sites show high heterogeneity. The soil permeability in the Shanghai-Nanjing-Hangzhou area is generally lower compared to the Beijing-Tianjin-Hebei area. In addition, the survey depth (20.3 m) of the contaminated sites in Beijing-Tianjin-Hebei and the central and southern Liaoning areas is generally deeper compared to the Shanghai-Nanjing-Hangzhou area (12.8 m). The most common organic contaminants in the groundwater are chlorinated organic compounds, including chloroalkanes (in 84% of sites), chlorinated benzenes (in 46% of sites) and chloroalkenes (in 33% of sites). Among chlorinated solvents, dichloroethane, monochlorobenzene and trichloromethane are the three most common pollutants. |
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| Keywords: | organic contamination contaminated sites soil lithology chlorinated solvent groundwater China |
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