HE Lin-juan,ZOU Kang-bing,SHENG Yun-ge,et al.Control Effect of Pretreatment on Membrane Fouling during Ultrafiltration of Dongjiang River Raw Water[J].China Water & Wastewater,2021,37(1):16-21.
预处理对东江原水超滤过程中膜污染的控制作用
- Title:
- Control Effect of Pretreatment on Membrane Fouling during Ultrafiltration of Dongjiang River Raw Water
- Keywords:
- ultrafiltration; membrane fouling; pretreatment; natural organic matter; coagulation; adsorption; oxidation
- 摘要:
- 以珠江流域东江水作为原水，研究不同预处理（混凝、吸附、氧化）及其组合对水体中有机污染物的去除效果及对超滤膜污染的控制作用。试验结果表明，针对东江原水中天然有机物的去除，聚合氯化铝（PACl）、粉末活性炭（PAC）和高锰酸钾（kMnO4）的最佳投加量分别为20、30、0.1 mg/L；三种单一预处理方法能够在一定程度上缓解膜通量衰减，而两两组合预处理则能够进一步提高膜运行通量；对于聚偏氟乙烯膜，PACl+PAC组合预处理对膜污染的控制作用最好。对于UV254和蛋白质，PACl和kMnO4对其去除效果优于PAC；对于多糖，三种预处理方法对其去除效果均不佳（<40%），其中PAC略好于PACl和kMnO4。此外，三种单一预处理方法对腐殖酸类荧光物质的去除效果高于蛋白质类荧光物质，而组合预处理能够更加显著地降低这两类荧光物质的响应强度，其中PACl+PAC组合预处理对有机物各荧光组分的去除效果最佳。通过对膜污染物成分的识别分析可知，东江原水中造成超滤膜污染的物质有腐殖酸类、多糖类和蛋白质类物质，而化学不可逆污染物主要为多糖类物质及少量的腐殖酸类物质，化学可逆污染物主要为蛋白质类物质及部分腐殖酸类物质。
- Abstract:
- Effects of different pretreatment processes (coagulation, adsorption and oxidation) and their combinations on removal of organic pollutants in raw water of Dongjiang River in Pearl River Basin and control of ultrafiltration membrane fouling were explored. For removal of natural organic matter in raw water of Dongjiang River, the optimal dosages of coagulant (polyaluminum), adsorbent (powdered activated carbon) and oxidant (kMnO4) were 20 mg/L, 30 mg/L and 0.1 mg/L, respectively. Three single pretreatment process could effectively alleviate membrane flux attenuation, while pairwise combined pretreatment processes could further alleviate membrane fouling. The combined pretreatment of polyaluminum and powdered activated carbon exhibited the best control effect on fouling of the polyvinylidene fluoride membrane. Polyaluminum and kMnO4 had better removal efficiency of UV254 and protein compared with that of powdered activated carbon. However, the three pretreatment processes had poor removal efficiency of polysaccharides (<40%), among which, powdered activated carbon was slightly better than polyaluminum and kMnO4. In addition, the three single pretreatment processes were more effective in removing humiclike fluorescent substances than protein-based fluorescent substances, while combined pretreatment processes could significantly reduce the response intensity of these two types of fluorescent substances. Among them, the combined pretreatment process of polyaluminum and powdered activated carbon had the best removal effect on each fluorescent component of organic matter. Through the identification and analysis of membrane fouling components， it was showed that the main fouling substances during ultrafiltration of Dongjiang River raw water included humic acids, polysaccharides and proteins. Among them, chemically irreversible foulants were polysaccharides and a small amount of humic acids, whereas the chemically reversible foulants were proteins and some humic acids.
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[1]郝晓地,陈峤,李季,等.MBR工艺全球应用现状及趋势分析[J].中国给水排水,2018,34(20):7.
HAO Xiao di,CHEN Qiao,LI Ji,et al.Status and Trend of MBR Process Application in the World[J].China Water & Wastewater,2018,34(1):7.
[2]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.
[3]刘文琛,周伟伟,成小翔,等.臭氧组合技术对给水处理低压膜污染控制研究进展[J].中国给水排水,2020,36(8):44.
[4]王慧文,陈卫,陶辉.预氧化/超滤组合除锰工艺的膜污染特性[J].中国给水排水,2020,36(9):22.
[5]姚萌,冉治霖,卢文静,等.絮体动态预负载协同超滤对水中锑(Ⅴ)的去除机制[J].中国给水排水,2020,36(13):26.
YAO Meng,RAN Zhi-lin,LU Wen-jing,et al. Removal Mechanism of Antimony (Ⅴ) in Water by Synergy of Dynamic Preloaded Flocs and Ultrafiltration [J].China Water & Wastewater,2020,36(1):26.
[6]吴靖宇,张爱军,戴小东,等.平板膜在生活垃圾焚烧厂渗滤液处理系统中的应用[J].中国给水排水,2020,36(16):126.
WU Jing-yu,ZHANG Ai-jun,DAI Xiao-dong,et al.Application of Flat Sheet Membrane in Leachate Treatment System of Domestic Waste Incineration Plant[J].China Water & Wastewater,2020,36(1):126.
[7]晏习鹏,肖小兰,亓金鹏,等.中试厌氧膜生物反应器对剩余污泥的消化效果[J].中国给水排水,2020,36(19):1.
YAN Xi-peng,XIAO Xiao-lan,QI Jin-peng,et al.Digestion of Excess Sludge in a Pilot Anaerobic Membrane Bioreactor[J].China Water & Wastewater,2020,36(1):1.
[8]刘建林,谢杰.膜芬顿技术在污水深度处理中的应用[J].中国给水排水,2020,36(22):145.
LIU Jian-lin,XIE Jie.Application of Membrane Fenton Coupling Technology in Wastewater Advanced Treatment[J].China Water & Wastewater,2020,36(1):145.
[9]苏菲,李英华,李海波,等.电絮凝/氧化—超滤协同去除水中NOM的研究[J].中国给水排水,2020,36(23):31.
SU Fei,LI Ying-hua,LI Hai-bo,et al.Removal of Natural Organic Matter by Electro-coagulation/Oxidation-Ultrafiltration Technology[J].China Water & Wastewater,2020,36(1):31.
[10]王金龙.再生水厂UF-RO双膜工艺的设计探讨及优化改进[J].中国给水排水,2020,36(24):120.
WANG Jin-long.Discussion and Improvement on Design of UF and RO Process in a Water Reclamation Plant[J].China Water & Wastewater,2020,36(1):120.
[11]王小兵,游浩荣,叶元柳,等.PAC/UF工艺处理微污染水源水的膜污染特性[J].中国给水排水,2020,36(11):27.
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GAO Qian,ZHANG Chong-miao,WEI Yang,et al.Research Progress of Membrane Fouling and Mitigation Techniques in Ultrafiltration Treatment of Drinking Water[J].China Water & Wastewater,2020,36(1):13.
[13]于海宽,李星,周志伟,等.大型超滤水厂PVC和PVDF膜运行特性差异与优化[J].中国给水排水,2021,37(1):28.
YU Hai-kuan,LI Xing,ZHOU Zhi-wei,et al.Operation Characteristics and Optimization of PVC and PVDF Membranes in Full-scale Ultrafiltration Drinking Water Treatment Plant[J].China Water & Wastewater,2021,37(1):28.
[14]郑利祥,郭中权,毛维东.矿井水处理聚合氯化铝残留物对超滤膜污染的影响[J].中国给水排水,2021,37(1):51.
ZHENG Li-xiang,GUO Zhong-quan,MAO Wei-dong.Influence of Polyaluminium Chloride Residue on Ultrafiltration Membrane Fouling in Mine Water Treatment[J].China Water & Wastewater,2021,37(1):51.
[15]刘坤乔,胥倩倩,汪步云,等.不同深度处理工艺净化太湖高藻原水的中试研究[J].中国给水排水,2021,37(9):21.
LIU Kun-qiao,XU Qian-qian,WANG Bu-yun,et al.Pilot-scale Test on Purification of Algae-laden Raw Water from Taihu Lake by Different Advanced Treatment Processes[J].China Water & Wastewater,2021,37(1):21.
[16]李雪,贺黎,冯冲凌,等.聚电解质强化超滤处理低浓度含Cd2+废水效能[J].中国给水排水,2021,37(11):70.
LI Xue,HE Li,FENG Chong-ling,et al.Treatment Performance of Ultrafiltration on Low Concentration Wastewater Containing Cd2+ Enhanced by Polyelectrolyte[J].China Water & Wastewater,2021,37(1):70.
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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(1):28.
[18]贺维鹏,屈梦军,施周,等.不同清洗剂对BF/UF联用工艺膜污染的减缓特性[J].中国给水排水,2021,37(19):33.
HE Wei-peng,QU Meng-jun,SHI Zhou,et al.Characteristics of Membrane Fouling Mitigated by Different Cleaning Agents in BF/UF Combined Process[J].China Water & Wastewater,2021,37(1):33.
[19]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.
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(1):15.