Yang Y, Allen E R
Envirogen, Inc., Princeton Research Center, Lawrenceville, New Jersey 08648, USA.
Air Waste. 1994 Nov;44(11):1315-21. doi: 10.1080/10473289.1994.10467328.
The kinetics of H2S oxidation in a biofilter were evaluated and the reaction rates determined to be first-order at low concentrations (< 200 ppm), zero-order at high concentrations (> 400 ppm), and fractional-order in the intermediate concentration range for H2S in the inlet waste gas. The overall performance of the biofilter system and changes in compost properties were investigated for 200 days of operation. The compost biofilter showed good buffering capacities to variations in gas flow rate and pollutant (H2S) loading impacts. Hydrogen sulfide removal efficiencies exceeding 99.9% were consistently observed. System acidification and sulfate accumulation were identified as inhibitors of required biological activity. Routine washing of the compost effectively mitigated these deficiencies. System upset was determined to be caused by compost dry-out or system overloading. Methods were developed to provide for recovery of contaminated filter material.
对生物滤池中H2S氧化动力学进行了评估，确定反应速率在低浓度（<200 ppm）时为一级，在高浓度（>400 ppm）时为零级，对于入口废气中的H2S，在中间浓度范围内为分数级。对生物滤池系统的整体性能以及运行200天期间堆肥性质的变化进行了研究。堆肥生物滤池对气体流速变化和污染物（H2S）负荷影响表现出良好的缓冲能力。持续观察到硫化氢去除效率超过99.9%。系统酸化和硫酸盐积累被确定为所需生物活性的抑制剂。定期冲洗堆肥可有效缓解这些不足。确定系统故障是由堆肥干涸或系统过载引起的。开发了一些方法来回收受污染的过滤材料。
