采用旋转生物滤池处理气态挥发性有机化合物。
Treatment of gaseous volatile organic compounds using a rotating biological filter.
机构信息
Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India.
Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India.
出版信息
Bioresour Technol. 2017 Nov;244(Pt 1):270-280. doi: 10.1016/j.biortech.2017.07.112. Epub 2017 Jul 22.
Rotating biological filter (RBF), which provides higher oxygen mass transfer has been developed for treating gaseous volatile organic compounds (VOCs) such as BTEX (Benzene, toluene, ethylbenzene and xylene) at higher concentrations. The screening of enriched cultures has been done initially to enhance the performance of RBF for treating xylene, toluene and xylene, and BTEX at various loading rates. The removal efficiency of BTEX was maximum (82%), higher than toluene and xylene (79%), and xylene (72%). The presence of xylene enhanced the removal of toluene in the mixture. In the BTEX, toluene was found to be highly biodegradable followed by ethylbenzene, benzene and xylene. The RBF also removed nutrients from wastewater along with VOCs. The stability study of RBF showed that supply of nutrient media influenced the RBF performance more. Further, the predominant strain identified in the mixed culture was Enterobacter cloacae SP4001, responsible for biodegradation of BTEX.
旋转生物滤池 (RBF) 提供了更高的氧气传质效率，已被开发用于处理高浓度的气态挥发性有机化合物 (VOCs)，如 BTEX（苯、甲苯、乙苯和二甲苯）。最初进行了富集培养物的筛选，以提高 RBF 处理二甲苯、甲苯和二甲苯以及各种负荷率下的 BTEX 的性能。BTEX 的去除效率最高（82%），高于甲苯和二甲苯（79%）和二甲苯（72%）。二甲苯的存在增强了混合物中甲苯的去除。在 BTEX 中，甲苯被发现具有很高的生物降解性，其次是乙苯、苯和二甲苯。RBF 还去除了废水中的营养物质和 VOCs。RBF 的稳定性研究表明，营养物质的供应对 RBF 的性能影响更大。此外，在混合培养物中鉴定出的主要菌株是阴沟肠杆菌 SP4001，负责 BTEX 的生物降解。
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