反冲洗方式对升流式生物活性炭滤池运行影响研究  

Influence of Backwashing on the Operation of Up-flow Biological Activated Carbon Tank

作　　者：黄勇均 何自翔 王彦 廖晓斌 Huang Yongjun;He Zixiang;Wang Yan;Liao Xiaobin(Institute of Municipal and Environmental Engineering,College of Civil Engineering,Huaqiao University,Xiamen 361021,China)

机构地区：[1]华侨大学土木工程学院市政工程系,福建厦门361021

出　　处：《市政技术》2022年第12期137-142,共6页Journal of Municipal Technology

基　　金：国家自然基金面上项目(No.51878301);华侨大学研究生科研创新能力培育计划资助项目。

摘　　要：以某微污染湖泊混凝沉淀出水作为升流式生物活性炭柱进水,比较了气水联合反冲洗和单独水冲2种方式对其运行的影响。结果表明:反冲洗初期,气水联合反冲洗废水浊度远高于单独水冲;反冲洗4 min后,前者低于后者;初滤水浊度降低速度也是前者快于后者。整个运行周期内,前者出水浊度、有机物含量和氨氮质量浓度都低于后者,且水头损失增长率也低于后者。反冲洗后,气水联合反冲洗炭柱的剩余微生物量少于单独水冲,但生物活性高于后者。使用气水联合反冲洗的升流式生物活性炭柱能够运行更长周期,降低反冲洗频率,节省反冲洗用水量,建议使用该反冲洗方式。The effluent of coagulation and sedimentation from micro-polluted lake water was used as the inlet of upflow biological activated carbon(BAC) columns, the effects of combined air-water backwashing and water flushing on the operation of carbon columns were compared. The results show that the wastewater turbidity of combined airwater backwashing was higher than that water flushing at first;The former became lower than the later after 4 minutes backwashing;The turbidity of primary filtered water from the former also reduced faster than the later. During the entire operating cycle, the turbidity, all of the concentration of organic matter and ammonia in the effluent of the former column were always lower than those of the later as well as the growth rate of the head loss. After backwashing, the residual biomass in the column by combined air-water backwashing was less than that water flushing, but its biological activity was higher than the later. Therefore, it is suggested to apply the combined air-water backwashing in the up-flow BAC column, it can run for a longer period, reduce the frequency of backwashing and save the water consumption of the backwashing.

关 键 词：生物活性炭滤池 升流式 反冲洗 气水联合反冲洗 单独水冲 

分 类 号：TU991.24[建筑科学—市政工程]