CAJ | 학술논문

采用自行设计制作的扩体错流式生物滴滤床,以甲苯为目标污染物、陶粒为填料、恶臭假单胞菌为菌源进行实验,研究了扩体错流式生物滴滤床的挂膜启动情况、甲苯进口浓度、停留时间对净化效率的影响.结果表明:(1)环境温度为17～23℃,扩体错流式生物滴滤床在10 d内完成挂膜启动,比传统生物滴滤床缩短了4 d.(2)甲苯净化效率随进口浓度的增加而逐渐下降.当甲苯进口质量浓度为1 100 mg/m~3时,净化效率为95%;当甲苯进口质量浓度维持在1 100～1 200 mg/m~3时,随停留时间的缩短,甲苯净化效率下降.(3)当停留时间分别为94、63、48 s时,甲苯净化效率分别为87%～92%、70%～74%、60%～62%.
채용자행설계제작적확체착류식생물적려상,이갑분위목표오염물、도립위전료、악취가단포균위균원진행실험,연구료확체착류식생물적려상적괘막계동정황、갑분진구농도、정류시간대정화효솔적영향.결과표명:(1)배경온도위17～23℃,확체착류식생물적려상재10 d내완성괘막계동,비전통생물적려상축단료4 d.(2)갑분정화효솔수진구농도적증가이축점하강.당갑분진구질량농도위1 100 mg/m~3시,정화효솔위95%;당갑분진구질량농도유지재1 100～1 200 mg/m~3시,수정류시간적축단,갑분정화효솔하강.(3)당정류시간분별위94、63、48 s시,갑분정화효솔분별위87%～92%、70%～74%、60%～62%.
The toluene degraded bacterial was inoculated on an enlarged cross-flow bio-tricking filter with Pseudomonas putida as cultured strains. The stat-up process of the filter was studied and effects of inlet concentration and residence time on toluene removal capacity were investigated. The results indicated that given the surrounding temperature of 17℃ to 23℃ ,the tested filter completed start-up process in 10 d,which was 4 d earlier than that of traditional bio-trickling filter. With inlet concentration of less than 1 100 mg/m~3,95% of toluene was removed,while the removal efficiency was decreased with increasing of inlet concentration,when the inlet toluene concentration ranged from 1 100 mg/m~3 to 1 200 mg/m~3 ,the removal efficiency of the filter kept 87%-92% at the residence time of 94 s. Reduce the residence time could decrease the filter treatment efficiency,only 60%-620% of was purified at the residence time of 4.8 s.