多环芳烃类污染场地应用原位电热脱附技术的能效分析

谢炳坤; 姜祖明; 曾俊; 籍龙杰; 刘鹏; 李书鹏; 韩进; 田齐东

doi:10.13205/j.hjgc.202108024

多环芳烃类污染场地应用原位电热脱附技术的能效分析

doi: 10.13205/j.hjgc.202108024

谢炳坤¹,
姜祖明^3, ,,
曾俊^1,2,
籍龙杰^1,2,
刘鹏^1,2,
李书鹏^1,2,
韩进¹,
田齐东¹

1. 北京建工环境修复股份有限公司, 北京 100015;
2. 污染场地安全修复技术国家工程实验室, 北京 100015;
3. 南京城建土地整理开发有限公司, 南京 210020

基金项目:

政府间国际科技创新合作重点专项（2016YFE0102000）。

详细信息

作者简介:
谢炳坤(1980-),男,工程师,主要研究方向为土壤及地下水修复。xiebingkun@bceer.com

通讯作者:
姜祖明(1976-),男,高级工程师,主要研究方向为土壤及地下水修复。40410255@qq.com

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出版历程
- 收稿日期: 2020-10-11
- 网络出版日期: 2022-01-18

ENERGY EFFICIENCY ANALYSIS OF IN-SITU ELECTROTHERMAL DESORPTION TECHNOLOGY IN POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) CONTAMINATED SITE

1. BCEG Environmental Remediation Co., Ltd, Beijing 100015, China;
2. National Engineering Laboratory for Safe Remediation of Contaminated Sites, Ltd, Beijing 100015, China;
3. Nanjing Urban Construction Land Consolidation and Development Co., Ltd, Nanjing 210020, China

摘要

摘要: 针对华东某多环芳烃类污染场地，通过应用原位电热脱附修复技术，系统分析了运行过程中加热温度、加热时间、气相抽提密度等关键参数的变化规律，并对修复效果、抽提气体浓度、能耗等运行参数进行分析。结果表明：原位电热脱附对多环芳烃类污染物具有良好的去除效果，加热运行250 d后，场地土壤温度均可达到300 ℃以上，污染物去除率达到99.99%以上，修复后土壤污染物浓度值低于修复目标值的要求。土壤加热温度、加热时间、气相抽提密度是影响原位电热脱附修复效果的关键因素，进而提出了降低修复成本的施工经验，为高温原位电热脱附的推广和工程化应用提供借鉴。
- 原位电热脱附 /
- 多环芳烃 /
- 土壤修复 /
- 运行参数 /
- 能效分析
Abstract: In this paper, the in-situ electrothermal desorption remediation technology was applied to a polycyclic aromatic hydrocarbon (PAHs) contaminated site in East China. The changes of key parameters such as heating temperature, heating time and gas phase extraction density during operation were systematically analyzed, and the operating parameters such as the remediation effect, extraction gas concentration and energy consumption were also analyzed. The results showed that the in situ electrothermal desorption had a good removal effect on PAHs. After 250 days of heating, the soil temperature of the site reached above 300 ℃, and the pollutant removal rate reached more than 99.99%. The concentration of soil pollutants after remediation was lower than the requirements of the target value of remediation. The heating temperature, heating time and gas phase extraction density of soil were the key factors affecting the effect of in-situ electrothermal desorption remediation, and the construction experience of reducing the cost of remediation was put forward, which could provide references for the promotion and engineering application of high-temperature in-situ electrothermal desorption.
- in-situ electrothermal desorption /
- PAHs /
- soil restoration /
- process parameter /
- energy efficiency analysis

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