陶瓷球填料生物滴滤塔降解甲苯废气  

PURIFYING WASTE GAS CONTAINING LOW CONCENTRATION TOLUENE IN TRICKLING BIOFILTER WITH CERAMIC SPHERES

作　　者：廖强[1] 田鑫[1] 朱恂[1] 王永忠[1] 陈蓉[1] 廖浩[2] 

机构地区：[1]重庆大学工程热物理研究所,重庆400044 [2]重庆石油高等专科学校,重庆400042

出　　处：《化工学报》2003年第12期1774-1778,共5页CIESC Journal

基　　金：国家自然科学基金资助项目 (No 5 0 0 0 60 15 ) ;重庆市科技攻关项目 (No 2 0 0 1-6681);重庆市应用基础研究项目(No 2 0 0 0 -62 5 6)~~

摘　　要：The Purification experiments of waste gas containing low concentration toluene were made in trickling biofilter with ceramic spheres.The effects of liquid flow rate, gas flow rate, pH of circulation liquid, and toluene concentration in inlet gas on the purification efficiency of trickling biofilter were investigated.The pressure drop of the trickling biofilter was also measured during experiments. Increasing liquid flow rate and gas flow rate resulted in the decrease of purification efficiency of trickling biofilter.The highest purification efficiency of trickling biofilter was found at the circulation liquid pH of 7.The porosity of the packing material at the inlet of gas was higher than that at the outlet of gas in biofilter after continuous operation in 50 days. The decrease in the porosity of packing material caused a great increase in the pressure drop of the biofilter.The Purification experiments of waste gas containing low concentration toluene were made in trickling biofilter with ceramic spheres.The effects of liquid flow rate, gas flow rate, pH of circulation liquid, and toluene concentration in inlet gas on the purification efficiency of trickling biofilter were investigated.The pressure drop of the trickling biofilter was also measured during experiments. Increasing liquid flow rate and gas flow rate resulted in the decrease of purification efficiency of trickling biofilter.The highest purification efficiency of trickling biofilter was found at the circulation liquid pH of 7.The porosity of the packing material at the inlet of gas was higher than that at the outlet of gas in biofilter after continuous operation in 50 days. The decrease in the porosity of packing material caused a great increase in the pressure drop of the biofilter.

关 键 词：生物膜滴滤塔 甲苯废气 降解效率 压力损失 

分 类 号：X511[环境科学与工程—环境工程]