WASHING-THERMAL DESORPTION REMEDIATION OF PARAFFIN AND NAPHTHENIC BASED CRUDE OIL CONTAMINATED SOIL

NIU Ming-fen; LIU Xin-zhi; GUO Ying-da; LI Gang; LI Bo-lin; GUO Shu-hai

doi:10.13205/j.hjgc.202209022

Volume 40 Issue 9

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(9): 167-172

NIU Ming-fen, LIU Xin-zhi, GUO Ying-da, LI Gang, LI Bo-lin, GUO Shu-hai. WASHING-THERMAL DESORPTION REMEDIATION OF PARAFFIN AND NAPHTHENIC BASED CRUDE OIL CONTAMINATED SOIL[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(9): 167-172. doi: 10.13205/j.hjgc.202209022

Citation:

NIU Ming-fen, LIU Xin-zhi, GUO Ying-da, LI Gang, LI Bo-lin, GUO Shu-hai. WASHING-THERMAL DESORPTION REMEDIATION OF PARAFFIN AND NAPHTHENIC BASED CRUDE OIL CONTAMINATED SOIL[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(9): 167-172. doi: 10.13205/j.hjgc.202209022

Citation:

NIU Ming-fen, LIU Xin-zhi, GUO Ying-da, LI Gang, LI Bo-lin, GUO Shu-hai. WASHING-THERMAL DESORPTION REMEDIATION OF PARAFFIN AND NAPHTHENIC BASED CRUDE OIL CONTAMINATED SOIL[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(9): 167-172. doi: 10.13205/j.hjgc.202209022

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WASHING-THERMAL DESORPTION REMEDIATION OF PARAFFIN AND NAPHTHENIC BASED CRUDE OIL CONTAMINATED SOIL

doi: 10.13205/j.hjgc.202209022

NIU Ming-fen^1,2,
LIU Xin-zhi^1,2,
GUO Ying-da³,
LI Gang^{3,2
,
,},
LI Bo-lin⁴,
GUO Shu-hai^3,2

1. School of Municipal and Environmental Engineering, Shenyang Jinzhu University, Shenyang 110168, China;
2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
3. National-Local Joint Engineering Laboratory of Contaminated Soil Remediation by Bio-physicochemical Synergistic Process, Shenyang 110016, China;
4. Northeast Petroleum University, Daqing 163318, China

Received Date: 2021-11-16
Available Online: 2022-11-09

Abstract

Abstract

The properties of crude oil will directly affect the selection of polluted soil remediation technology. Paraffin and naphthenic based crude oil contaminated soils were selected, and the coupling technology of soil washing and thermal desorption were adopted to investigate the desorption ratios of petroleum and energy consumption. The particular concern was focused on the screening effect of washing pretreatment on soil particle size, desorption rate of petroleum pollutants, the effect of thermal desorption remediation on reagent washed soil, etc. The results showed that after water washing pretreatment, the desorption rate of petroleum adsorbed by large particle size sand in soil was about 59.83% and 36.42%, much higher than the clay component. Anionic sodium α-16 olefin sulfonate and isomeric alcohol ethoxylate were used during washing process. The desorption rates of petroleum in paraffin based and naphthenic crude oil contaminated soil were 46.5% and 39.8% respectively. Anionic sodium α-16 olefin sulfonate had a stronger desorption ability. Naphthenic based crude oil contaminated soil was remediated by thermal desorption, the desorption time of clay component after washing was shorter than the raw contaminated soil. The content of petroleum was decreased to 0.26% after thermal desorption at 400 ℃ for 3 hours. The washing-thermal desorption coupling technology was adopted for field test, and the petroleum content of large particle size sand after washing was 1.56%, and 0.57% for the dewatered clay by thermal desorption. The energy consumption of washing-thermal desorption was lower than the single thermal desorption technology.
- petroleum contaminated soil,
- soil washing,
- thermal desorption,
- coupling technology

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References(21)

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