Comparative study on filtration of PM2.5 in combustion flue gas of organic solid waste
ZHU Fen-fen1, WANG Huan1, Xu Zhi-min2, YAN Fa-wei3, LI Xue-mei1, HU Bo1, LI Sheng-hong1
1. School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China; 2. Zengyangtianxia(Beijing) Management Consulting Co., Ltd., Beijing 100081, China; 3. Planning and Development Department, Beijing Daxing International Airport, Capital Airports Holding Company, Beijing 102604, China
Abstract：Waste incineration is one of the important sources of PM2.5. At present, there is no control unit for the effective removal of PM2.5 in the flue gas system. In this paper, the removal effect of several filter media on PM2.5 produced by the combustion of three kinds of organic solid wastes, namely sawdust, pork and sludge, was studied. These filter media are polyester knitting fabric, polytetrafluoroethylene (PTFE) fabric, polyvinylidene fluoride (PVDF) micro-filtration membranes, graphene and their combinations. The combination of PTFE fabric and PVDF micro-filtration membrane has the best filtration effect on PM2.5 produced by sawdust burning, which can reach 97.45%. The filtration effect of double layer PVDF micro-filtration membrane on PM2.5 of pork and sludge burning are 99.39% and 98.03%, respectively. According to the experimental results and SEM-EDS analysis, PVDF micro-filtration membrane has a high selectivity retention effect on particles made of C. The combined use of filter can greatly improve the filtration efficiency of PM2.5. However, double-layer filtration may increase resistance, which is not conducive to a large number of exhaust gases for dust treatment.
朱芬芬, 王欢, 徐智敏, 闫法威, 李雪梅, 胡博, 李胜红. 有机固废燃烧烟气中PM2.5的过滤比较研究[J]. 中国环境科学, 2021, 41(9): 4193-4203.
ZHU Fen-fen, WANG Huan, Xu Zhi-min, YAN Fa-wei, LI Xue-mei, HU Bo, LI Sheng-hong. Comparative study on filtration of PM2.5 in combustion flue gas of organic solid waste. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(9): 4193-4203.
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