MBBRMBR组合工艺处理生活污水效能及膜污染研究

  • 格式:pdf
  • 大小:1.16 MB
  • 文档页数:7

MBBR ̄MBR 组合工艺处理生活污水效能及膜污染研究
张恒亮1ꎬ2ꎬ3 ꎬ段亮2ꎬ3∗ ꎬ姚美辰2ꎬ3 ꎬ魏健2ꎬ3
1. 北京师范大学水科学研究院ꎬ北京 100875 2. 环境基准与风险评估国家重点实验室ꎬ中国环境科学研究院ꎬ北京 100012
3. 中国环境科学研究院城市水环境研究室ꎬ北京 100012
Study on performance and membrane fouling of MBBR ̄MBR combined process for treatment of domestic wastewater
ZHANG Hengliang1 2 3 DUAN Liang2 3 YAO Meichen2 3 WEI Jian2 3
1. College of Water Sciences Beijing Normal University Beijing 100875 China 2. State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences
Beijing 100012 China 3. Department of Urban Water Environmental Research Chinese Research Academy of Environmental Sciences Beijing 100012 China
Abstract A moving bed biofilm reactor MBBR  ̄membrane bioreactor MBR combined process was constructed to treat domestic wastewater and the removal effect of pollutant and membrane fouling were investigated. The results showed that the removal rate of NH +  ̄N and COD could reach 97% by MBBR ̄MBR. The membrane suction

pressure in MBR was characterized by a slow increase and then a rapid increase with the extension of the running time. Extracellular polymeric substances EPS and soluble microbial products SMP were important factors influencing membrane fouling. Ordinary chemical cleaning did not restore the MBR membrane module to the level of the new showing irreversibility. The apparent molecular weight distribution of EPS was more extensive while the apparent molecular weight of SMP exhibited a single peak characteristic. SMP was mainly composed of small molecular weight substances. Key words moving bed biofilm reactor MBBR membrane bioreactor MBR domestic wastewater extracellular polymeric substances soluble microbial products
Vol. 9ꎬ No. 3 MayꎬJournal of Environmental Engineering Technology
第 9 卷ꎬ第 3 期 2019 年 5 月
张恒亮ꎬ段亮ꎬ姚美辰ꎬ等. MBBR ̄MBR 组合工艺处理生活污水效能及膜污染研究[ J] . 环境工程技术学报ꎬ2019ꎬ9(3) :245 ̄251. ZHANG H Lꎬ DUAN Lꎬ YAO M Cꎬ et al. Study on performance and membrane fouling of MBBR ̄MBR combined process for treatment of domestic wastewater[ J] . Journal of Environmental Engineering Technologyꎬ2019ꎬ9(3) :245 ̄251.
摘要 构建了移动床生物膜反应器( MBBR)  ̄膜生物反应器( MBR) 组合工艺处理生活污水ꎬ考察了其对污染物的去除效果和 膜污染情况ꎮ 结果表明ꎬMBBR ̄MBR 对 NH4+  ̄N 和 COD 的去除率均能达到 97% 以上ꎮ MBR 中跨膜压随运行时间延长呈先慢 速增加后快速增加的特点ꎬ活性污泥微生物胞外聚合物( EPS) 和微生物代谢产物( SMP) 是膜污染的重要物质ꎬ普通的化学清 洗并不能使 MBR 膜组件恢复到新膜的水平ꎬ膜污染呈不可逆性ꎮ EPS 的表观分子量分布较广泛ꎬ而 SMP 的表观分子量呈单 峰特征ꎬ主要以小分子量物质为主ꎮ 关键词 移动床生物膜反应器( MBBR) ꎻ膜生物反应器( MBR) ꎻ生活污水ꎻ胞外聚合物ꎻ微生物代谢产物 中图分类号:X703 文章编号:1674 ̄991X(2019)03 ̄0245 ̄07 doi:10������ 12153∕j. issn. 1674 ̄991X. 2019������ 01������ 240