生物滴滤塔处理氨气、硫化氢混合气体的研究

生物滴滤塔处理舍NH3与H2S臭气最佳的生态条件为：在温度为25℃、营养盐喷淋量为8．0L／h、气体通气量为0．4m^3／h,NH3进气质量浓度为435．74～802．32mg／m^3 H2S进气质量浓度为723．44～952．18mg/m^3,pH值在7．0—8．0之间的条件下．去除效率可达90％以上。填料高度与气体的净化效率存在一定的关系，H2S进气质量浓度在670．20—960．88mg／m^3时．下层填料净化效率可达50％～60％；下、中两层填料的净化效率则可达90％以上，在下半部分填料层就能去除大部分气体污染物。

Study on Treatment of Odors Containing NH3 and H2S in Biotrickling Filter

The suitable ecological conditions for microbial degradation of the NH3 and H2S are： temperature at 25 ℃, the nutrient sprinkling rate at 8 L/h, aeration rate at 0.4 m^3/h with incoming NH3 at 435.74 -802.32 mg/m^3 and H2S concentration at 723.44 - 952.18 mg/m^3, pH at 7.0 - 8.0, under above condition, both of the cleaning efficiency could be up to 90%. It found that the height of packing affect the cleaning efficiency. The study shows that with the incoming H~S concentration at 670.20 - 960.88 mg/m^3, the cleaning efficiency in the under-layer of the reactor is up to 50% -60%, and in the beth of the under-layer and the middle-layer is up to 90%.Therefore, most of the pollutants are removed at the bottom of the bio-trickling filter.