北京市污染场地土壤修复工程实证分析

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Abstract In order to identify the remediation characteristics of contaminated soil at regional scales, the remediation technologies and volumes based on 51remediation sites in Beijing from 2006 to 2021 were statistically analyzed. The material flow method was used to explore the flux and trend of contaminated soil and contaminants, and the factor method was used to estimate the carbon emissions generated by remediation behaviours. The results showed that the remediation volume of contaminated soil in Beijing during the past 16years was 8.1918 million m³, of which 88.13%, 10.23% and 1.64% were organic, organic-inorganic composite and inorganic contaminated soil, respectively. The remediation technologies used were mainly ex-situ, accounting for 82.92% of the total remediated soil volume. The main destinations of remediated soil were landfill (46.02%) and resource utilization (35.18%), while in-situ remediation (15.25%), risk control (1.83%) and backfilling (1.72%) were relatively minor. A total of 9943.70t of 6types of characteristic contaminants were treated, including 239.89t of benzene series, 1502.12t of chlorinated hydrocarbons, 510.36t of polycyclic aromatic hydrocarbons, 4908.52t of petroleum hydrocarbons, 2768.33t of heavy metals and 14.48t of pesticides. The total amount of CO₂ emitted by the remediation was 583400 tons, and the emission intensity gradually decreased. It is suggested that, firstly, give priority to low-carbon remediation technologies and resource utilization models; secondly, reduce the disturbance and transportation flux of characteristic contaminants remediated in regional scales, and reduce the input consumption of energy and materials; thirdly, elaborate the sustainable degree assessment method of regional contaminated sites remediation, and build a strong management model for sustainable use of soil resources.

Key words： soil pollution flux analysis characteristic contaminants regional remediation resource utilization

Received: 04 July 2022

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	Articles by authors
	MENG Hao
	MEI Dan-bing
	DENG Jing-fei
	LIU Peng
	DONG Jing-qi
	ZHANG Hong-zhen
	LI Xiang-lan

Cite this article:

MENG Hao,MEI Dan-bing,DENG Jing-fei等. Empirical analysis on soil remediation constructions of contaminated sites in Beijing[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(2): 764-771.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I2/764

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