Influences of Ventilation Method on Bioventing Effectiveness for a Diesel-contaminated Soil

LIU Sha-sha; XU Yu-xin; DONG Jia-hua; CHEN Zhi-liang; PENG Xiao-chun

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Influences of Ventilation Method on Bioventing Effectiveness for a Diesel-contaminated Soil

- Influences of Ventilation Method on Bioventing Effectiveness for a Diesel-contaminated Soil
- Bulletin of Soiland Water Conservation Vol. 32, Issue 5, Pages: 15-18(2013)
- 作者机构：
  
  1. 山东农业大学,山东,泰安,271018
  2. 山东省高校农业环境重点实验室,山东,泰安,271018
  3. 环境保护部华南环境科学研究所,山东,泰安,271018
- 作者简介：
- 基金信息：
- DOI：
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- Published：2013
- 稿件说明：
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LIU Sha-sha, XU Yu-xin, DONG Jia-hua, et al. Influences of Ventilation Method on Bioventing Effectiveness for a Diesel-contaminated Soil[J]. Bulletin of Soiland Water Conservation, 2013, 32(5): 15-18.
DOI：

LIU Sha-sha, XU Yu-xin, DONG Jia-hua, et al. Influences of Ventilation Method on Bioventing Effectiveness for a Diesel-contaminated Soil[J]. Bulletin of Soiland Water Conservation, 2013, 32(5): 15-18. DOI：

摘要

生物通风法被广泛应用于不饱和土壤中挥发性有机物的去除，具有高效、费用低等优点。以黄壤为实验土样，柴油为污染物，采用室内一维土柱实验模拟生物通风过程，研究了抽提和注入两种通风方式下柴油的去除效果及规律。结果表明，两种通风方式的去除规律大致相同，抽提方式的去除速度要比注入快，但最终去除率仅比注入高2.28%；每日通风前后及通风过程中测定的土柱总出气口中总挥发性有机化合物(TVOC)值的变化规律也基本相同，只是通风后TVOC值相对较高；在一天8h的通风过程中，每隔1，2，3h测定的TVOC值波动变化的程度为TVOC1h > TVOC2h > TVOC3h；土壤中有效磷和速效氮的含量与柴油生物降解效率密切相关。

Abstract

Bioventing has been effectively used for removal of volatile organic compounds from unsaturated soil due to its high efficiency and low treatment cost.An experiment was conducted in laboratory using diesel as a model contaminant and one dimensional porous column filled with yellowish soil.The removal effect and its process using the two ventilation methods of pumping and injecting were studied.Results showed that pumping and injecting had the same removal process.The removal rate by pumping was faster than injecting

but the remediation efficiency was only 2.28% higher than injecting.The total volatile organic compounds(TVOC) of tail gas before and after ventilation also had the same changing process

but the value after ventilation was relatively higher.The TVOC was determined every 1

2 and 3 h one day in the 8 h ventilation

and the fluctuating degree of TVOC was showed as the order of TVOC1h>TVOC2h>TVOC3h.Available phosphorus and effective nitrogen were highly related to the diesel biodegradation efficiency in the soil.

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