油烟废气高效降解菌的选育与降解特性

SCREENING OF OILY SMOKE DEGRADING BACTERIA AND THEIR DEGRADATION POWER

从受油烟污染的土壤中分离筛选出 4株菜油降解菌株 .试验表明 ,4株菌株能够不同程度地降解菜油 .菌株Z1表现出较强的降解能力 ,该菌最适生长条件为 :温度 30℃ ,pH =7,摇床转速 2 10r·min-1,接种量1% .在空塔气速 0 2～ 1 2cm·s-1、停留时间 10～ 4 0s的试验范围内 ,选取木块为滤料 ,研究生物滤塔油烟废气的降解性能 ,分析了浓度、流量、湿度对降解能力的影响 .试验运行结果表明 ,滤料微生物菌株Z1活性较强 ,对油烟具有较强的降解能力和抗负荷冲击力 .

Four strains with rapeseed oil degrading power were isolated from contaminated soil and screened. Experimental results indicated that these four strains had different degrading activities and Pseudomonas sp. Z1 showed higher rapeseed oil degrading activity. Optimum conditions of growth of Z1: 30°C, pH 7.0, inoculum amount 1%, and shaker rotary speed 210 r&middotmin-1. Biodegradation of oily smoke was investigated at superficial velocity of biofilter reactor 0.2 - 1.2 cm&middots-1, retention time 10 - 40 s and the effects of such factors as oily smoke concentration, gas-flow rate and relative humidity on oily smoke removal efficiency were studied. The biofilter reactor was effective in removing oily smoke and was able to handle a high oily smoke load.