在聚氨酯生物滤池中生物量、压降和性能之间的关系。
Relationships between biomass, pressure drop, and performance in a polyurethane biofilter.
机构信息
Department of Chemical and Environmental Engineering, Soongsil University, Seoul 156-743, Republic of Korea.
出版信息
Bioresour Technol. 2010 Mar;101(6):1745-51. doi: 10.1016/j.biortech.2009.10.018. Epub 2009 Nov 5.
In biofilters for controlling volatile organic compounds (VOCs), clogging in the filter bed due to overgrowth of biomass causes the deterioration of biofilter performance. In this study, the relationships between biofilter performance, biomass concentration (X), and pressure drop (DeltaP) was qualitatively and quantitatively evaluated in a polyurethane (PU) biofilter. Benzene was used as a model VOC. The relationship between DeltaP and X at a moisture content of 80-90% was expressed as log DeltaP (mm H(2)Om(-1))=0.315+3.87 log X (g-dry cell weight (DCW) g-PU(-1)), 0.8<X<2.5. Maximum removal rate (V(m)) for benzene declined with increasing biomass concentration at more than 0.8 g-DCW g-PU(-1), and the following equation was obtained: V(m) (gm(-3)h(-1))=811-261 X (g-DCW g-PU(-1)), 0.8<X<2.5. The quantitative relationships obtained in this study can be applied to assess and optimize PU biofilter performance for long-term operation.
在用于控制挥发性有机化合物（VOC）的生物过滤器中，由于生物量过度生长导致过滤器床堵塞，从而导致生物过滤器性能恶化。在这项研究中，在聚氨酯（PU）生物过滤器中定性和定量评估了生物过滤器性能、生物量浓度（X）和压降（DeltaP）之间的关系。苯被用作模型 VOC。在 80-90%水分含量下，DeltaP 与 X 之间的关系表示为 log DeltaP（mm H(2)Om(-1)）=0.315+3.87 log X（g-干细胞重量（DCW）g-PU(-1)），0.8<X<2.5。在超过 0.8 g-DCW g-PU(-1)的生物量浓度下，苯的最大去除速率（V(m)）随生物量浓度的增加而降低，并且得到了以下方程：V(m)（gm(-3)h(-1)）=811-261 X（g-DCW g-PU(-1)），0.8<X<2.5。本研究中获得的定量关系可用于评估和优化用于长期运行的 PU 生物过滤器性能。
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