文章摘要
冀世锋,李迎,巢晨骅,高春梅.氯化镧对MBR膜污染控制的影响研究[J].上海海洋大学学报,2017,26(2):251-257.
JI Shifeng,LI Ying,CHAO Chenhua,GAO Chunmei.Study on the effects of lanthanum chloride on control of MBR membrane fouling[J].Journal of Shanghai Ocean University,2017,26(2):251-257.
氯化镧对MBR膜污染控制的影响研究
Study on the effects of lanthanum chloride on control of MBR membrane fouling
投稿时间:2016-01-18  修订日期:2016-07-12
DOI:10.12024/jsou.20160101642
中文关键词: 氯化镧  MBR  膜污染  总阻力  SMP  EPS
英文关键词: lanthanum chloride  MBR  membrane fouling  total resistance  SMP  EPS
基金项目:上海市教委高校第五期海洋环境工程重点学科项目(J50702)
作者单位E-mail
冀世锋 上海海洋大学 海洋科学学院, 上海 201306  
李迎 上海海洋大学 海洋科学学院, 上海 201306  
巢晨骅 上海海洋大学 海洋科学学院, 上海 201306  
高春梅 上海海洋大学 海洋科学学院, 上海 201306 cmgao@shou.edu.cn 
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中文摘要:
      投加添加剂是现阶段缓解MBR膜污染的主要手段之一。稀土金属的优良特性为缓解膜污染提供了可能。实验选取氯化镧为添加剂,以空白组作为对照,分别在HRT为18 h、12 h和6 h下对比两组MBR系统中活性污泥的过滤性能、压缩性能、EPS和SMP含量。结果表明:在HRT为6 h时,加镧组污泥过滤总阻力为空白组的1/2,污泥比阻为空白组的1/10,污泥压缩系数比空白组提高34.7%,SMP和EPS浓度均较空白组低20%以上,P/C值是空白组的2倍以上。氯化镧通过改善混合液的过滤性能、压缩性能、降低污染物的含量及改变其相对疏水性缓解了膜污染。
英文摘要:
      Additives have been used to alleviate the membrane fouling in recent years. The excellent properties of rare earth metals provide the possibility for the mitigation of membrane fouling. In this experiment, a group with lanthanum and a blank group had been set to compare their filtration and compression performance of activated sludge, SMP and EPS concentration at different HRT. The result shows that, at HRT of 6 hours, the sludge total resistance of the former was half of that of blank, and the sludge compression coefficient increased by 34.7% compared with that in the blank group, the sludge specific resistance was about 10% of the blank. The SMP and EPS concentration of former was decreased by 20%, and P/C was more than 2 times that of the blank group. Lanthanum chloride alleviated the membrane fouling by improving the filtration and compressibility, reducing the content of pollutants and changing their relative hydrophobicity.
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