[1]许泽彬,韩永辉,刘婉琼,等.在线混凝—超滤工艺处理滤池反冲洗废水中试研究[J].中国给水排水,2021,37(23):15-20.
　XU Ze-bin,HAN Yong-hui,LIU Wan-qiong,et al.Performance of In-line Coagulation and Ultrafiltration Process on Filter Backwash Wastewater Treatment[J].China Water & Wastewater,2021,37(23):15-20.
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在线混凝—超滤工艺处理滤池反冲洗废水中试研究

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第23期 页码: 15-20 栏目: 出版日期: 2021-12-01
Title:
Performance of In-line Coagulation and Ultrafiltration Process on Filter Backwash Wastewater Treatment
作者:
许泽彬1，韩永辉2，刘婉琼1，黄泽宇1，梁恒2
(1.佛山市三水佛水供水有限公司，广东佛山528000；2.哈尔滨工业大学环境学院，黑龙江哈尔滨150090)
Author(s):
XU Ze-bin1，HAN Yong-hui2，LIU Wan-qiong1，HUANG Ze-yu1，LIANG Heng2
(1. Foshan Sanshui Foshui Water Supply Co. Ltd.， Foshan 528000， China； 2. School of Environment， Harbin Institute of Technology， Harbin 150090， China)
关键词:
滤池反冲洗废水; 在线混凝; 超滤; 膜污染
Keywords:
filter backwash wastewater; in-line coagulation; ultrafiltration; membrane fouling
摘要:
通过中试探究超滤技术处理滤池反冲洗废水的效果以及对膜污染的影响。结果表明，与直接超滤相比，在线混凝—超滤的跨膜压差增长速率明显降低，即混凝预处理能够有效缓解膜污染；当膜通量和过滤周期较小时，造成的膜污染以可逆污染为主，膜通量越大、过滤周期越长，引起的膜污染越严重；在线混凝—超滤对滤池反冲洗废水具有良好的处理效能，对浊度和UV254的平均去除率分别为99.42%和42.24%，出水CODMn均在2 mg/L以下，铁和铝含量均在0.06 mg/L以下，能够基本去除所有的细菌和大肠杆菌，保证了出水的生物安全性，但超滤对氨氮和荧光性有机物的去除效果不佳。X射线能谱(EDS)元素分析显示，膜表面存在无机金属污染，与单独碱洗相比，碱洗+酸洗的化学清洗方式对膜污染的去除效果更好。混凝—超滤工艺成本较低，这为超滤技术用于滤池反冲洗废水的处理及安全回用提供了技术支持和理论依据。
Abstract:
Through the pilot test, the effect of ultrafiltration technology on the treatment of filter backwash wastewater and membrane fouling were explored. The results showed that, compared with the direct ultrafiltration process, the growth rate of the transmembrane pressure difference during the inline coagulation-ultrafiltration operation was significantly reduced, indicating that the coagulation pretreatment could effectively alleviate the membrane fouling. When the membrane flux and filtration cycle were small, the membrane fouling was mainly reversible fouling. The larger membrane flux and filtration cycle would cause more serious membrane fouling. In-line coagulation-ultrafiltration had good treatment efficiency for filter backwash wastewater. The average removal rates of turbidity and UV254 were 99.42% and 42.24%, respectively, the effluent CODMn was below 2 mg/L, the iron and aluminum contents were below 0.06 mg/L, and ultrafiltration could basically remove all bacteria and E. coli, ensuring the biological safety of effluent. But the ultrafiltration was not effective in removing ammonia nitrogen and fluorescent organic matter. EDS elemental analysis showed that there were inorganic metal contamination on the surface of the membrane. Therefore, compared with alkaline washing alone, alkaline washing+acid cleaning was better for the removal of membrane fouling. The coagulation-ultrafiltration process has low cost and is suitable for popularization. This research provides technical support and theoretical basis for the treatment and safe reuse of filter backwash wastewater using ultrafiltration technology.

相似文献/References:

[1]杨斐,刘宏远,朱海涛,等.强化组合超滤技术处理污染水源水[J].中国给水排水,2020,36(7):42.
[2]林锦棠,韩永辉,许泽彬,等.不同超滤组合工艺对滤池反冲洗废水的处理效能[J].中国给水排水,2021,37(15):28.
　LIN Jin-tang,HAN Yong-hui,XU Ze-bin,et al.Performance of Different Ultrafiltration Combined Processes for Treatment of Filter Backwash Wastewater[J].China Water & Wastewater,2021,37(23):28.

更新日期/Last Update: 2021-12-01