某染料化工厂地块苯系物分布特征分析

彭进进; 李琳; 郑川; 胡玲; 吴晓煦

doi:10.13205/j.hjgc.202104028

某染料化工厂地块苯系物分布特征分析

doi: 10.13205/j.hjgc.202104028

彭进进¹,
李琳^1, ,,
郑川^1,2,
胡玲¹,
吴晓煦¹

1. 武汉市环境保护科学研究院, 武汉 430015;
2. 武汉智汇元环保科技有限公司, 武汉 430074

基金项目:

湖北省技术创新专项重大项目（2016ACA171）。

详细信息

作者简介:
彭进进(1985-),男,硕士,工程师,主要研究方向为土壤污染物迁移行为研究。pengjin55@126.com

通讯作者:
李琳,正高级工程师。740026442@qq.com

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- 文章访问数: 329
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- 被引次数: 0
出版历程
- 收稿日期: 2020-05-08
- 网络出版日期: 2021-07-21

ANALYSIS OF DISTRIBUTION CHARACTERISTICS OF BTEX IN A DYESTUFF CHEMICAL SITE

1. Wuhan Research Institute of Environmental Protection, Wuhan 430015, China;
2. Wuhan Zhihuiyuan Environmental Protection Technology Co., Ltd, Wuhan 430074, China

摘要

摘要: 为掌握长江中游某染料化工污染地块土壤中苯系物分布特征，对地块17个地下水样品和343个土壤样品进行了测定。结果表明：地下水和土壤苯系物分布区域一致，污染具有同源性；地块地势平坦，土壤水平渗透性差，污染物扩散范围有限。受土壤防污性能影响，苯，间、对-二甲苯及邻-二甲苯主要在7.2 m深度以上土壤中检出；3种物质在土壤中主要以轻质非水相液体（LNAPL）存在，在地下水水位附近出现聚集，在饱和带以溶解态继续向下迁移扩散。土壤中氯苯主要以重质非水相液体（DNAPL）存在，其浓度大，迁移深度深，与氯苯在土壤中存在形态、迁移时间以及地质条件有关。后续修复工程中，建议浅部污染土采用异位常温解吸和化学氧化联合修复技术，深部污染土和受污染地下水一同采用原位化学氧化修复技术。
- 土壤 /
- 地下水 /
- 染料化工 /
- 苯系物 /
- 空间分布
Abstract: In order to understand the distribution characteristics of benzene series(BTEX) in the soil of a dye chemical pollution site in the middle reaches of the Yangtze River, 17 groundwater samples and 343 soil samples were determined. The results showed that:the distribution of BTEX in groundwater and soil was consistent, and the pollution had homology; due to the flat terrain and poor horizontal permeability of soil, the diffusion range of pollutants was limited. Influenced by soil anti-pollution performance, benzene, m,p-xylene and o-xylene were mainly detected in soil layer above 7.2 m, the three substances mainly existed as light non-aqueous phase liquid (LNAPL) in the soil, and they accumulated near the groundwater level, and continued to migrate in the saturated zone in dissolved state. Chlorobenzene mainly existed in soil as heavy nonaqueous liquid (DNAPL), the concentration of chlorobenzene in soil was higher, and the depth of migration was deeper, related to the form, migration time and geological conditions. It was suggested that the combination of ex-situ normal temperature desorption and chemical oxidation technology should be used for shallow contaminated soil, and in-situ chemical oxidation technology should be used for deep contaminated soil and polluted groundwater, in the remediation project.
- soil /
- groundwater /
- dyestuff chemical /
- benzene series /
- space distribution

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