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

XIE Bing-kun; JIANG Zu-ming; ZENG Jun; JI Long-jie; LIU Peng; LI Shu-peng; HAN Jin; TIAN Qi-dong

doi:10.13205/j.hjgc.202108024

Volume 39 Issue 8

Jan. 2022

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XIE Bing-kun, JIANG Zu-ming, ZENG Jun, JI Long-jie, LIU Peng, LI Shu-peng, HAN Jin, TIAN Qi-dong. ENERGY EFFICIENCY ANALYSIS OF IN-SITU ELECTROTHERMAL DESORPTION TECHNOLOGY IN POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) CONTAMINATED SITE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(8): 173-178,187. doi: 10.13205/j.hjgc.202108024

Citation:

XIE Bing-kun, JIANG Zu-ming, ZENG Jun, JI Long-jie, LIU Peng, LI Shu-peng, HAN Jin, TIAN Qi-dong. ENERGY EFFICIENCY ANALYSIS OF IN-SITU ELECTROTHERMAL DESORPTION TECHNOLOGY IN POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) CONTAMINATED SITE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(8): 173-178,187. doi: 10.13205/j.hjgc.202108024

Citation:

XIE Bing-kun, JIANG Zu-ming, ZENG Jun, JI Long-jie, LIU Peng, LI Shu-peng, HAN Jin, TIAN Qi-dong. ENERGY EFFICIENCY ANALYSIS OF IN-SITU ELECTROTHERMAL DESORPTION TECHNOLOGY IN POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) CONTAMINATED SITE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(8): 173-178,187. doi: 10.13205/j.hjgc.202108024

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

doi: 10.13205/j.hjgc.202108024

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

Received Date: 2020-10-11
Available Online: 2022-01-18

Abstract

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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References(24)

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