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	半程混凝/臭氧化/陶瓷膜过滤新型净水集成工艺
	范小江 ; 雷颖 ; 张锡辉 ; 巢猛 ; 野口宽 ; Fan Xiao-jiang ; Lei Ying ; Zhang Xi-hui ; Chao Meng ; Hiroshi Noguchi
	2016-03-30 ; 2016-03-30
关键词	净水工艺 半程混凝 臭氧 陶瓷膜 跨膜压差 微生物安全 water purification process half coagulation ozone ceramic membrane trans-membrane pressure microbial safety TU991.2
其他题名	Investigation into a New Integrated Water Purification Process of Half Coagulation /Ozonation /Ceramic Membrane Filtration
中文摘要	为研究半程混凝/臭氧化/陶瓷膜过滤新型净水集成工艺处理微污染原水时膜污染的控制及该工艺对污染物的去除能力,进行了小试实验,分别改变混凝剂和臭氧的投加量,考察不同工艺条件对跨膜压差及出水水质的影响.结果表明:半程混凝和臭氧可以有效降低膜污染,混凝剂聚合氯化铝(PAC)的投加量为12.5mg/L时,跨膜压差由原水直接过膜时的-0.074MPa降低至-0.021MPa,臭氧的投加量从0mg/L增加至2mg/L时,跨膜压差由-0.068MPa降低至-0.049MPa;半程混凝/臭氧/陶瓷膜集成工艺对有机物的去除效果显著,工艺出水中有机物分子质量分布范围由原水的小于5ku缩小至小于3ku,一部分大分子有机物转化为小分子有机物;该工艺对CODMn和UV254的去除率分别为60.00%和68.00%,对THMFP和HAAFP的去除率分别为57.59%和48.39%;集成工艺出水浊度低于0.05NTU,水中粒径大于2μm的颗粒数小于等于10CNT/mL,细菌总数和总大肠菌群数为0,出水的微生物安全得到保障.; In order to control the membrane fouling caused by the half coagulation /ozonation /ceramic membrane filtration of micro-polluted water and investigate the removal capability of this process for pollutants,a bench-scale test was carried out,and the effects of coagulant dosage and ozone dosage on trans-membrane pressure and effluent quality were explored. The results show that(1) membrane fouling can be alleviated significantly by half coagulation and ozonation,for instance,the trans-membrane pressure decreases rapidly from the original- 0. 074 MPa to- 0. 021 MPa at a PAC( Polyaluminum Chloride) dosage of 12. 5 mg /L and decreases from- 0. 068 MPa to- 0. 049 MPa as the O3 dosage increases from 0 mg /L to 2 mg /L;(2) the organic matter in water can be removed efficiently by the integrated process; for instance,the molecular mass distribution range of the organic matter changes from less than 5 ku to less than 3 ku,which means a transformation of part of organic matter from large molecular mass to a smaller one;(3) the integrated process helps achieve 60. 00% and 68. 00% of CODMnand UV254 removals as well as 57. 59% and 48. 39% of THMFP and HAAFP removals,respectively;(4) after the integrated process,the effluent turbidity decreases to less than 0. 05 NTU,the number of particles larger than 2 μm decreases to less than or equal to 10 CNT /mL,and the bacteria and coliform groups in water are entirely removed. Thus,the microbial safety of the effluent is successfully guaranteed.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/148306]
专题	清华大学
推荐引用方式 GB/T 7714	范小江,雷颖,张锡辉,等. 半程混凝/臭氧化/陶瓷膜过滤新型净水集成工艺[J],2016, 2016.
APA	范小江.,雷颖.,张锡辉.,巢猛.,野口宽.,...&Hiroshi Noguchi.(2016).半程混凝/臭氧化/陶瓷膜过滤新型净水集成工艺..
MLA	范小江,et al."半程混凝/臭氧化/陶瓷膜过滤新型净水集成工艺".(2016).

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