| 制粒及工艺优化对工程化阴燃治理含油污泥的影响 |
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| 引用本文： | 刘杉, 葛传芹, 沈诣, 朱水清, 单晖峰. 制粒及工艺优化对工程化阴燃治理含油污泥的影响[J]. 环境工程学报, 2023, 17(6): 1978-1986. doi: 10.12030/j.cjee.202301064 |
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| 作者姓名： | 刘杉 葛传芹 沈诣 朱水清 单晖峰 |
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| 作者单位： | 江苏大地益源环境修复有限公司，南京 210012 |
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| 基金项目： | 南京市六合区科技计划资助项目 (LHCG2021002) |
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| 摘 要： | 针对含油污泥含水率高、含油率高、渗透性差导致应用工程化阴燃处置技术的适应性差、处置能力低等问题，采用制粒手段强化含油污泥的预处理过程，并对其阴燃点燃及推进方式加以调整，旨在筛选出较优的预处理和阴燃工艺参数。通过小试实验探索了含水率对油泥制粒的影响，以及含水率、制粒状态、辅助燃料、阴燃启动方式和推进方向对阴燃的影响。结果表明，某含油废水治理产生的含油污泥可采用对辊挤出制粒的方式进行预处理，含水率宜控制在33%~35%；油泥经脱水或制粒均可增强阴燃稳健性；含水率较高时添加质量分数5%的稻壳，点燃耗时可缩短约40%，阴燃蔓延速度提升约70%；采用木炭间接启动阴燃也可显著缩短点燃耗时。本研究结果可为工程化阴燃治理油泥的工艺和设备设计提供参考。
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| 关 键 词： | 含油污泥 预处理 制粒 工程化阴燃 |
| 收稿时间： | 2022-01-17 |
Effect of granulation and process optimization on the treatment of oil sludge by engineered smoldering |
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| LIU Shan, GE Chuanqin, SHEN Yi, ZHU Shuiqing, SHAN Huifeng. Effect of granulation and process optimization on the treatment of oil sludge by engineered smoldering[J]. Chinese Journal of Environmental Engineering, 2023, 17(6): 1978-1986. doi: 10.12030/j.cjee.202301064 |
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| Authors: | LIU Shan GE Chuanqin SHEN Yi ZHU Shuiqing SHAN Huifeng |
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| Affiliation: | Jiangsu DDBS Environmental Remediation Co., Ltd, Nanjing 210012, China |
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| Abstract: | Aiming at the issues of poor applicability and treatment capacity of engineered smoldering caused by high water content, high oil content and low permeability of oil sludge, granulation was adopted to strengthen its pretreatment process, and its smoldering ignition and propulsion mode were adjusted in order to screen out better pretreatment and smoldering technical parameters. The influence of water content on sludge granulation was explored through lab-scale experiments, the water content, granulation state, auxiliary fuel, and smoldering initiation mode were explored as well. The results demonstrated that the oil sludge from a oily wastewater treatment process could be pretreated by roller extrusion granulation, and the water content should be controlled within 33%~35%; sludge dehydration or granulation could enhance the smoldering stability; ignition time could be shortened by about 40%, and the smoldering propagation velocity could be increased by about 70% after adding rice husk with a mass fraction of 5% into high moisture sludge, indirect initiation of smoldering using charcoal could also significantly shorten the ignition time. The experimental results provide guiding significance fo the process and equipment design of engineering smoldering treatment of oil sludge. |
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| Keywords: | oil sludge pretreatment granulation engineered smoldering |
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