LINJing-fang,ZHANGXin-ying,ZHANGLi-min,et al.Membrane Cleaning Effect and Membrane Performance Change in MBR Projects during Long-term Operation[J].China Water & Wastewater,2022,38(3):67-73.
MBR工程长期运行中的膜清洗效果和膜性能变化
- Title:
- Membrane Cleaning Effect and Membrane Performance Change in MBR Projects during Long-term Operation
- Keywords:
- membrane bioreactor; chemical cleaning; membrane performance
- 摘要:
- 为了探究膜生物反应器（MBR）工程长期运行中不同使用年限和清洗方案对膜性能的影响，对3个MBR工程中膜现有清洗效果进行评价，并对膜丝进行机械强度、接触角、红外光谱等方面的测试分析。结果表明，3个MBR工程中的膜经恢复性清洗后，膜表面的有机污染物和无机污染物仍有部分残留，其中运行时间最长（5 年）的洋里四期MBR中膜的有机污染清洗效果较差，膜表面絮体纤维残留较多；无机污染元素主要是Ca、Fe，柠檬酸对含Fe元素的无机污染物具有较好的去除效果。膜使用时间增加和膜老化可能造成膜的机械强度下降；膜清洗频率对膜机械性能有一定影响，清洗剂会破坏膜表面的亲水性改性剂，导致膜亲水性能下降。
- Abstract:
- To explore the effects of different service life and cleaning schemes on membrane performance in membrane bioreactor (MBR) projects during long-term operation, the existing membrane cleaning effect in three MBR projects was evaluated, and the mechanical strength, contact angle, infrared spectrum and other aspects of the membrane were analyzed. Some organic and inorganic foulants still remained on the membrane surface of the three MBR projects after recovery cleaning. Among them, MBR in phase Ⅳ project of Yangli WWTP which had the longest operation time (5 years), had a poor organic fouling cleaning effect, and there were more floc fiber residues on the membrane surface. The inorganic foulants were mainly Ca and Fe, and citric acid had a good removal effect on inorganic foulants containing Fe element. The mechanical strength of the membrane might decrease with the increase of the service time and membrane aging. The membrane cleaning frequency had a certain influence on the mechanical properties of the membrane, and cleaning agent would destroy the hydrophilic modifier on the membrane surface, resulting in the decrease of membrane hydrophilicity.
相似文献/References:
[1]郑俊,王梦琳,张德伟,等.无泡充氧膜生物反应器对生活污水处理效果的研究[J].中国给水排水,2020,36(13):55.
ZHENG Jun,WANG Meng-lin,ZHANG De-wei,et al. Effect of Non-bubble Aerated Membrane Bioreactor on Domestic Wastewater Treatment [J].China Water & Wastewater,2020,36(3):55.
[2]孙剑宇,雷霆,梁鹏,等.脉冲曝气在大型膜生物反应器工程中的应用与优化[J].中国给水排水,2021,37(9):100.
SUN Jian-yu,LEI Ting,LIANG Peng,et al.Application and Optimization of Pulse Aeration in Large-scale Membrane Bioreactor[J].China Water & Wastewater,2021,37(3):100.
[3]张勇,秦玉兰,樊晓丽,等.平板陶瓷膜MBR工艺在农村污水处理中的应用[J].中国给水排水,2021,37(10):120.
ZHANG Yong,QIN Yu-lan,FAN Xiao-li,et al.Application of Flat Ceramic MBR Process in Rural Sewage Treatment[J].China Water & Wastewater,2021,37(3):120.
[4]杨应明,王旭东,刘玄宁,等.汲取液EDTA-2Na对正渗透MBR运行性能的影响[J].中国给水排水,2021,37(11):9.
YANG Ying-ming,WANG Xu-dong,LIU Xuan-ning,et al.Effect of EDTA-2Na Draw Solute on Operating Performance of Forward Osmosis MBR[J].China Water & Wastewater,2021,37(3):9.
[5]李莹,刘强,陈卫,等.胞外聚合物与膜污染的相关关系研究进展[J].中国给水排水,2021,37(12):25.
LI Ying,LIU Qiang,CHEN Wei,et al.Advances of Correlation between Extracellular Polymers and Membrane Fouling[J].China Water & Wastewater,2021,37(3):25.
[6]杨宗政,张天宇,王元培,等.基于互联网监控的焦化废水处理研究[J].中国给水排水,2021,37(19):98.
YANG Zong-zheng,ZHANG Tian-yu,WANG Yuan-pei,et al.Treatment of Coking Wastewater Based on Internet Monitoring[J].China Water & Wastewater,2021,37(3):98.
[7]董堃,魏学睿,徐泸峰,等.响应曲面法优化Anammox-MBR工艺及膜表征[J].中国给水排水,2022,38(1):95.
DONG Kun,WEI Xue-rui,XU Lu-feng,et al.Optimization of Anammox-MBR Process by Response Surface Methodology and Membrane Characterization[J].China Water & Wastewater,2022,38(3):95.
[8]毛鑫,张冰,唐和礼,等.生物法减缓MBR膜污染的研究进展[J].中国给水排水,2022,38(18):34.
MAOXin,ZHANGBing,TANGHe-li,et al.Research Progress of Biological Methods to Mitigate MBR Membrane Fouling[J].China Water & Wastewater,2022,38(3):34.
[9]马传净,刘海园,杨德强.浸没式MBR油脂污染离线清洗方法和经济性研究[J].中国给水排水,2023,39(16):105.
MAChuan-jing,LIUHai-yuan,YANGDe-qiang.Study on Off-line Cleaning Method and Economy of Grease Pollution in Immersed Membrane Bioreactor[J].China Water & Wastewater,2023,39(3):105.
[10]田家宇,郭智洁,黄睿,等.骨料粒径对中空平板陶瓷膜MBR膜污染特性的影响[J].中国给水排水,2024,40(9):8.
TIANJia-yu,GUOZhi-jie,HUANGRui,et al.Effect of Aggregate Size on Membrane Fouling of Hollow Flat Ceramic Membrane in MBR[J].China Water & Wastewater,2024,40(3):8.
[11]王郑伟,刘广波,陈泽滨,等.广州市某净水厂MBR膜丝检测及清洗优化[J].中国给水排水,2024,40(3):89.
WANGZheng-wei,LIUGuang-bo,CHENZe-bin,et al.Detection of MBR Membrane in a Sewage Purification Plant in Guangzhou and Its Cleaning Optimization[J].China Water & Wastewater,2024,40(3):89.
[12]田家宇,司文艳,耿明月,等.NaOH/PMS对MBR中空平板陶瓷膜的化学清洗特性[J].中国给水排水,2024,40(15):16.
TIANJia-yu,SIWen-yan,GENGMing-yue,et al.Chemical Cleaning Characteristics of Flat-sheet Ceramic Membrane in MBR with NaOH/PMS[J].China Water & Wastewater,2024,40(3):16.