摘要
混凝过程中有机物之间相互作用,对混凝过程形成的絮体性质及后续纳滤膜过滤过程中形成的滤饼层致密性产生影响。针对天然有机物中亲水性和疏水性有机物,采用单一和联合投加的方式,利用激光粒度仪对不同有机物配比条件下形成的絮体尺寸进行测定,研究表明不同组分的有机物对膜污染的影响不同,亲水性组分被认为是亲水性膜材料的主要污染物。
The interaction between the organic matters in the process of coagulation has an impact on the nature of the flocs formed in the process of coagulation and the density of cake layer formed in the filtration process of nanofiltration( NF). The objective of this research is to investigate the combined and individual method of hydrophobic and hydrophilic fractions of NOM( natural organic matter),using laser particle sizer to determine floc sizes formed in different conditions of ratios of organic matters. The results show that organic matters of different components have different influence on membrane fouling,and the hydrophilic component is considered as the main pollutant of the hydrophilic membrane materials.
出处
《环境工程》
CAS
CSCD
北大核心
2013年第S1期292-295,239,共5页
Environmental Engineering
基金
国家自然科学基金(21176245
50978245)
国家高技术研究发展计划(863)课题(2007AA06Z339
2009AA06390)
关键词
混凝
纳滤
絮体性质
膜污染
coagulation
nanofiltration
floc characteristic
membrane fouling
