微等离子-生物耦合工艺处理挥发性有机物
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摘要
采用微等离子-生物耦合工艺处理挥发性有机物(VOCs),考察臭氧浓度对生物塔的运行效果及尾气中其它污染物的排放情冴。研究结果表明:当进入生物塔内的臭氧浓度在0.01～0.03 mg/L时,为保证出气浓度低于60 mg/m~3,进气浓度最高达685 mg/m~3;当臭氧浓度在0.001 2～0.001 4 mg/L,系统进气浓度可达1 100mg/m~3,耦合工艺中生物塔的较单纯生物塔处理负荷提高约16%。稳定运行期间,出气中氮氧化物和一氧化碳均低于100 mg/m~3,TOC长期维持在15 mg/m~3以下。说明该耦合工艺中微量臭氧能够加强生物塔内微生物的活性,提高系统处理能力,且不产生二次污染物。
The coupling system of microplasma and bio-trickling filter was used to remove the volatile organic compounds(VOCs). The effect of ozone concentration on the operation of biological tower and the emission of other pollutants in the exhaust gas was investigated. The results showed that when ozone concentration was 0.01～0.03 mg/L,to ensure the outlet concentration less than 60 mg/m~3, the inlet concentration was up to 685 mg/m~3. When ozone concentration was 0.001 2～0.001 4 mg/L, the inlet concentration can be up to 1 100 mg/m~3. The load of biological tower was increased by about 16% compared with the pure biological tower. In the coupling process, nitrogen oxides and carbon monoxide in outgassing were all below 100 mg/m~3,TOC was below 15 mg/m~3. The micro ozone in the coupling process can enhance the activity of microorganisms in the bioreactor, improve the treatment capacity of the system, and do not produce secondary pollutants.
The coupling system of microplasma and bio-trickling filter was used to remove the volatile organic compounds(VOCs). The effect of ozone concentration on the operation of biological tower and the emission of other pollutants in the exhaust gas was investigated. The results showed that when ozone concentration was 0.01～0.03 mg/L,to ensure the outlet concentration less than 60 mg/m~3, the inlet concentration was up to 685 mg/m~3. When ozone concentration was 0.001 2～0.001 4 mg/L, the inlet concentration can be up to 1 100 mg/m~3. The load of biological tower was increased by about 16% compared with the pure biological tower. In the coupling process, nitrogen oxides and carbon monoxide in outgassing were all below 100 mg/m~3,TOC was below 15 mg/m~3. The micro ozone in the coupling process can enhance the activity of microorganisms in the bioreactor, improve the treatment capacity of the system, and do not produce secondary pollutants.
引文
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[14]Prakit Saingam.臭氧对VOC生物滤塔长期运行性能及微生物特性的影响[D].清华大学,2016.
[2]陈文泰,邵敏,袁斌,王鸣,陆思华.大气中挥发性有机物(VOCs)对二次有机气溶胶(SOA)生成贡献的参数化估算[J].环境科学学报,2013,33(01):163-172.
[3]钱津旺.挥发性有机物的气相色谱分析研究[J].当代化工,2012,41(01):108-110.
[4]李华琴,何觉聪,陈洲洋,黎宝仁,黄倩茹,张再利,魏在山.低温等离子体-生物法处理硫化氢气体研究[J].环境科学,2014,35(04):1256-1262.
[5]邹兊华,严义刚,刘咏,王保伟,宁晓宇,许根慧.低温等离子体治理恶臭气体研究进展[J].化工环保,2008(02):127-131.
[6]姜理英,张迪,郭海倩,缪晶晶,陈怡伶,李慧.低温等离子体对复合CVOCs的降解特性[J].环境科学,2017,38(05):1792-1798.
[7]郭海倩,缪晶晶,姜理英,张迪.低温等离子体-生物耦合系统对复合CVOCs的降解[J].环境科学,2018,39(02):640-647.
[8]兰善红,温志良,杨达,王玮,武秀文,王玥婷,毕耜静.化学氧化-生物法处理挥収性有机废气研究[J].化工科技,2018,26(03):38-41
[9]吴晓青.我国大气氮氧化物污染控制现状存在的问题与对策建议[J].中国科技产业,2009(08):13-16.
[10]黄兴,黄晓娴,王体健,庄炳亮,李树,谢旻,韩永,杨修群,孙鉴泞,丁爱军,符淙斌.南京城区上空大气一氧化碳的观测分析[J].中国环境科学,2013,33(09):1577-1584.
[11]]袁宏林,范雅文,王晓昌.西安市城区持久性有机污染物的干湿沉降[J].环境工程学报,2016,10(03):1358-1364.
[12]汪鲁,强志民,董慧峪,吕燕飞,聂亚峰.城市污水处理厂污泥臭氧减量技术研究[J].环境科学学报,2014,34(02):363-369.
[13]汪鲁,强志民,董慧峪,吕燕飞,聂亚峰.城市污水处理厂污泥臭氧减量技术研究[J].环境科学学报,2014,34(02):363-369.
[14]Prakit Saingam.臭氧对VOC生物滤塔长期运行性能及微生物特性的影响[D].清华大学,2016.