石化化纤污水场VOC的监测与不同生物法治理VOC的比较
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摘要
本实验采用过滤、滴滤、洗涤3个小试规模的生物塔对某中石化化纤污水处理场的4个污水池排放的挥发性有机物(VOCs)进行治理。考察了进气流量、停留时间以及湿度的变化对3台生物塔净化VOCs废气的影响。并对四个污水池排放的主要VOCs做了定性和定量分析。结果表明,污水池中监测到的VOC主要有苯、苯乙烯、间二甲苯等7种,其中有5种污染物已经超过《石油化学工业污染物排放标准》中的排放要求。此外,在生物法的治理实验中,增大进气流量至0.2m~3/h,停留时间缩短至86s时,生物滴滤塔在应对成分复杂、浓度多变的VOCs时,表现出了较好的适应性和较强的稳定性,其对甲醇、苯、苯乙烯的平均去除率能够一直维持在90%以上,并对乙醇、环己烷和间二甲苯的平均去除率分别有25.0%、47.7%和7.0%的提升,均可实现达标排放。
引文
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[7]中华人民共和国环境保护局,中国家技术监督局.恶臭污染物排放标准[S]:GB 14554-93,北京:1993
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[9]中华人民共和国环境保护部,国家质量监督检验检疫总局.石油化学工业污染物排放标准[S]:GB 31571-2015,北京:2015.
[2]Balasubramanian P,Philip L,Bhallamudi SM.Biotrickling filtration of VOC emissions from pharmaceutical industries[J].Chemical Engineering Journal.2012,209:102-112.
[3]Estrada JM,Rodriguez E,Quijano G,et al.Influence of gaseous VOC concentration on the diversity and biodegradation performance of microbial communities[J].Bioprocess and Biosystems Engineering.2012,35(9):1477-1488.
[4]Ding Y,Han Z Y,Wu WX,et al.Performance evaluation of biofilters and biotrickling filters in odor control of nbutyric acid[J].Journal of Environmental Science and Health Part a-Toxic/Hazardous Substances&Environmental Engineering,2011,46(5):441-452.
[5]任爱玲,赫环环,郭斌等.生物滴滤塔净化含低浓度苯乙烯废气的研究[J].环境科学学报.2013,33(7):1840-1848.
[6]赵倩怡,宋新明,张俊丰.生物床在石化污水处理厂臭气治理中的应用[J].中国给水排水.2015,31(14):77-80.
[7]中华人民共和国环境保护局,中国家技术监督局.恶臭污染物排放标准[S]:GB 14554-93,北京:1993
[8]Ravi R,Philip L,Swaminathan t.Comparison of biological reactors(biofilter,biotrickling filter and modified RBC)for treating dichloromethane vapors[J].Journal of chemical technology and biotechnology,2010,85(5):634-639.
[9]中华人民共和国环境保护部,国家质量监督检验检疫总局.石油化学工业污染物排放标准[S]:GB 31571-2015,北京:2015.