摘要
采用以竹炭为填料的两级串联生物滴滤塔(BTF)去除甲硫醚(DMS),在装置停运两周后,重新启动只需3 d就可以恢复其功能。当进气DMS浓度为5~8 g/m^3时,两级BTF系统对其去除率可长期稳定在99%以上。当进气浓度由5 g/m^3提高到20 g/m^3时,两个BTF的去除负荷均不断增加。当进气浓度<14 g/m^3时,两级BTF可基本全部去除DMS;同时随着填料层高度的增加,DMS的浓度越来越低,且二级BTF低于一级BTF。对两个BTF中的微生物进行分析,发现两个塔中的生物量均为下层>中层>上层,且二级BTF中的生物量高于一级BTF;一级BTF中的微生物主要为球菌,而二级BTF中的微生物主要为丝状菌。
An experimental investigation on purification of DMS was conducted in a two-stage biotrickling filter （BTF） packed with bamboo charcoal. The results showed that it needed only three days to restart after a two-week shutdown. The DMS removal efficiency of two-stage BTFs was more than 99% of DMS under the conditions of inlet concentration 5 - 8 g/m3. The removal load of two BTFs increased when inlet concentration grow from 5 g/m3 to 20 g/m3. The removal efficiency reached 100% at an inlet concentration less than 14 g/m^3. Furthermore, the concentration of DMS dropped with the constant in creasing filler, and DMS concentration in the second BTF was less than the first. The analysis of microorganisms retrieved from two BTFs indicated that biomass decreased from bottom to top and the second BTF was more than the first. The microbial species in the first BTF was mainly cocci, while the second was filamentous bacteria.
出处
《中国给水排水》
CAS
CSCD
北大核心
2017年第7期37-41,共5页
China Water & Wastewater
基金
深圳市科技研发资金资助项目(JCYJ20150630114140637
JCYJ20160331113033413)
关键词
生物滴滤塔
甲硫醚
恢复启动
进气浓度
微生物特性
biotrickling filter
dimethyl characteristics sulfide
re-startup
inlet concentration
microbial
