摘要
利用“通量阶式递增法”对临界通量进行了测定,得出MBR的3个水动力学操作区:超临界区、临界区和次临界区;在MLSS的质量浓度为6 000 mg/L、曝气量为0.5 m3/h的条件下,膜组件的临界通量区域为10.68～13.86 L/(m2.h),据此确定组件的次临界通量为12 L/(m2.h)。在此基础上研究了次临界通量下的运行特性,试验表明,次临界通量下的膜污染过程具有明显的两阶段特征:第一阶段的TMP呈平缓直线上升,第二阶段的TMP呈剧烈直线上升。
Using ＂flux step-wise＂ method to measure critical flux, three different hydrodynamic operating sections of membrane bioreactor were determined： exceed ctritical section, critical section and subcritieal section; under the condition that, mass concentration of MLSS was 6 000 mg/L, aeration intensity was 0.5 m^3/h, the critical flux of membrane module was 10.68 - 13.86 L/（m^2· h）, and the subcritical flux of membrane module was determined to be 12 L/（m^2· h）. Based on the above results, the operation characteristics of membrane module under subcritical flux were studied. The experiment showed that, under subcritical flux, membrane fouling was obviously characterized by two stages： the TMP rose gradually at the first stage, and rose rapidly at the second stage.
出处
《工业用水与废水》
CAS
2006年第6期35-38,共4页
Industrial Water & Wastewater
基金
中日合作项目(课题番号:16254002)
关键词
膜生物反应器
临界通量
污水处理
生活污水
membrane bioreactor
critical flux
wastewater treatment, domestic wastewater
