Ryu Hee Wook, Kim So Jung, Cho Kyung Suk
Department of Chemical and Environmental Engineering, Soongsil University, Seoul 156- 743, Korea.
J Environ Biol. 2010 May;31(3):315-8.
To select the best available packing material for malodorous organic gases such as toluene and benzene, biofilter performance was compared in biofilters employed different packing materials including porous ceramic (celite), Jeju scoria (lava), a mixture of granular activated carbon (GAC) and celite (GAC/celite), and cubic polyurethane foam (PU). A toluene-degrading bacterium, Stenotrophomonas maltophilia T3-c, was used as the inoculum. The maximum elimination capacities in the celite, lava, and GAC/celite biofilters were 100, 130, and 110 gm(-3) hr(-1), respectively. The elimination capacity for the PU biofilter was approximately 350 g m(-3) hr(-1) at an inlet loading of approximately 430 g m(-3) hr(-1), which was 2 to 3.5 times higher than for the other biofilters. The pressure drop gradually increased in the GAC/ celite, celite and lava biofilters after 23 day due to bacterial over-growth, and the toluene removal efficiency remarkably decreased with increasing pressure drop. Backwashing method was not effective for the control of biomass in these biofilters. In the PU biofilter however, backwashing allowed maintenance of a pressure drop of 1 to 3 mm H2O m(-1) and a removal efficiency of > 80%, indicating that the PU was the best packing material for toluene removal among the packing materials tested.
为了选择用于甲苯和苯等恶臭有机气体的最佳可用包装材料，在使用不同包装材料的生物滤池中比较了生物滤池性能，这些包装材料包括多孔陶瓷（硅藻土）、济州火山渣（熔岩）、颗粒活性炭（GAC）和硅藻土的混合物（GAC/硅藻土）以及立方聚氨酯泡沫（PU）。使用嗜麦芽窄食单胞菌T3-c作为接种物，该菌可降解甲苯。硅藻土、熔岩和GAC/硅藻土生物滤池的最大去除能力分别为100、130和110 g m(-3) hr(-1)。在入口负荷约为430 g m(-3) hr(-1)时，PU生物滤池的去除能力约为350 g m(-3) hr(-1)，比其他生物滤池高2至3.5倍。23天后，由于细菌过度生长，GAC/硅藻土、硅藻土和熔岩生物滤池的压降逐渐增加，甲苯去除效率随压降增加而显著降低。反冲洗方法对控制这些生物滤池中的生物量无效。然而，在PU生物滤池中，反冲洗可使压降维持在1至3 mm H2O m(-1)，去除效率>80%，表明在测试的包装材料中，PU是去除甲苯的最佳包装材料。
