A DEMONSTRATION PROJECT OF OIL SLUDGE TREATMENT WITH ENGINEERED SMOLDERING TECHNOLOGY
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摘要: 工程化阴燃技术是一种针对难降解、难治理重质(低挥发性)油泥或石油烃污染土壤等重度有机污染介质, 基于阴燃机理的自持主动修复技术,其在国内的研发、实践还处于早期阶段。湖北某焦化厂存量含油污泥的治理工程是工程化阴燃技术用于油泥治理在国内的首演。通过现场中试确定了油泥预处理方法、药剂配比和阴燃治理工艺条件。工程示范分为2步:第1步为预处理阶段,采用"化学调质+板框压滤"工艺对含油污泥进行脱水、减量;第2步为治理阶段,采用4台工程化异位阴燃反应装置执行。含油污泥的含水率经预处理后降至50%左右,经阴燃治理后的油泥总量减少90%,目标污染物去除率达到98%以上,满足项目验收指标。Abstract: Engineered smoldering technology, based on smoldering mechanism, is a self-sustaining treatment technology for active remediation, aiming at medias such as heavy (low volatility) oil sludge or petroleum hydrocarbon contaminated soil that are highly contaminated by organics and difficult to degrade and treat. Its R&D and practice are still at an early stage in China. Treatment of the stocked oil sludge at a coking plant in Hubei province was the debut of engineered smoldering technology for the treatment of oil sludge in China. A pilot test was conducted first to determine the pre-treatment approach, reagent dosage, and process conditions of smoldering treatment. Step I of the demonstration project was pre-treatment through a "chemical conditioning+plate-frame pressure filtration" process for dewatering and mass reduction; Step II was a treatment process with 4 sets of ex-situ engineered smoldering equipment. The moisture of oil sludge was reduced to around 50% through pre-treatment, total mass was reduced by 90% and the removal rate of the concerned contaminants in oil sludge exceeded 98% after smoldering treatment, meeting the acceptance standard of this project.
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[1] 梁宏宝, 张全娟, 陈洪涛, 等. 含油污泥联合治理技术的应用现状与展望[J]. 环境工程技术学报, 2020, 10(1):118-125. [2] HU G J, LI J B, ZENG G M. Recent development in the treatment of oily sludge from petroleum industry:a review[J]. Journal of Hazardous Materials, 2013, 261:470-490. [3] 李俊生. 陆地石油开采生态风险评估的技术研究[M]. 北京:中国环境出版社, 2013. [4] AL-MUTAIRI N, BUFARSAN A, AL-RUKAIBI F. Ecorisk evaluation and treatability potential of soils contaminated with petroleum hydrocarbon-based fuels[J]. Chemosphere, 2008, 74:142-148. [5] ALEXANDRA L D, JOSHUA K B, DAVID J P, et al. Remediation of PFAS-contaminated soil and granular activated carbon by smoldering combustion[J]. Environmental Science and Technology, 2020, (54):12631-12640. [6] JOSÉ L T, JASON I G, MARCIO F M, et al. Processes defining smouldering combustion:integrated review and synthesis[J]. Progress in Energy and Combustion Science, 2020, 81:100869. [7] FRANCESCO RESTUCCIA, HUANG X Y, GUILLERMO REIN. Self-ignition of natural fuels:can wildfires of carbon-rich soil start by self-heating[J]. Fire Safety Journal, 2017,91:828-834. [8] TAREK L R, JASON I G, GAVIN P G. Application of self-sustaining smoldering combustion for the destruction of wastewater biosolids[J]. Waste Management, 2016,50:201-212. [9] HONS K W, MUXINA K, JORGE B, et al. Self-sustaining smouldering combustion of waste:a review on applications, key parameters and potential resource recovery[J]. Fuel Processing Technology, 2020, 205:106425. [10] ALDUSHIN A P, BAYLISS A, MATKOWSKY B J. On the transition from smoldering to flaming[J]. Combustion and Flame, 2006,145(3):579-606. [11] 葛传芹,雷大鹏,刘杉,等. 采用异位阴燃修复技术处理含油固废中试实验[J]. 环境工程学报, 2022, 16(2):601-611. [12] RONDA A, ZASSA M D, BIASIN A, et al. Experimental investigation on the smoldering of pine bark[J]. Fuel, 2017,193:81-94. [13] TANZEER H, JASON I G, Rory H, et al. Self-sustaining smoldering combustion of coal tar for the remediation of contaminated sand:two-dimensional experiments and computational simulations[J]. Fuel, 2015,150:288-297. [14] CHEN H X, GUILLERMO REIN, LIU N A. Numerical investigation of downward smoldering combustion in an organic soil column[J]. International Journal of Heat and Mass Transfer, 2015,84:253-261. [15] KINSMAN L, TORERO J L, GERHARD J I. Organic liquid mobility induced by smoldering remediation[J]. Journal of Hazardous Materials, 2017,325:101-112. [16] GAVIN P G, DAVID M, GRANT C S, et al. Smoldering combustion (STAR) for the treatment of contaminated soils:examining limitations and defining success[M]. Wiley Periodicals, Inc, 2016. [17] REBECCA S, GAVIN P G, GRANT C S, et al. STARx Hottpad for smoldering treatment of waste oil sludge:proof of concept and sensitivity to key design parameters[J]. Waste Management & Research, 2020, 38(5):554-566. [18] 许春莲, 蒋进元, 靳顺龙, 等. 污泥机械脱水技术发展现状及前景[J]. 环境工程, 2016, 34(11):90-93. [19] 李丹梅, 王艳霞, 余庆中, 等. 含油污泥调剖技术的研究与应用[J]. 石油钻采工艺, 2003, 25(3):74-76.
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