超声波对MBR处理低温污水的强化机理  

Ultrasonic Enhancement Mechanism of MBR Treating Low-temperature Wastewater

作　　者：王秋茹 Wang Qiu-ru

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090

出　　处：《化工设计通讯》2018年第8期220-221,共2页Chemical Engineering Design Communications

摘　　要：在膜生物反应器(MBR)引入超声波以探讨其对低温污水处理的强化效果与作用机理,结果显示超声辐照可提高COD去除率,且辐照时间为20min、功率密度为0.27W/L时效果最佳。机理研究表明超声波辐照可增强微生物的细胞膜通透性并提高脱氢酶活性,从而提高有机物的降解效果。Ultrasound was introduced into membrane bioreactor(MBR)to investigate its enhancement effect and mechanism of low temperature sewage treatment.The results showed that ultrasonic irradiation could increase COD removal rate,and the irradiation time was 20 min and the power density was 0.27W./L is the best.Mechanism studies have shown that ultrasonic irradiation can enhance the cell membrane permeability of microorganisms and increase the activity of dehydrogenase,thereby increasing the degradation of organic matter.

关 键 词：低温 膜生物反应器 超声波 机理 

分 类 号：X703[环境科学与工程—环境工程]