摘要
膜法深度处理地下水工艺主要针对用臭氧-活性炭预处理微污染地下水,再用纳滤膜去除微量有机物的过程进行研究.通过分析地下原水经预处理后水中微污染有机物宏观指标及分子量分布、性质等微观指标的变化,及进一步分析这种变化对膜污染的组分及形成过程的影响,初步确定原水中使纳滤膜污染的主要有机物是分子量大于10 000的有机物.最后通过强化预处理的途径,尽量控制造成膜污染的主要有机物的形成,从而达到优化膜法深度净水工艺结构的目的.
Advanced treatment technology of ground water by membrane mainly consists of pretreating ground water by ozone- activated carbon technology, and removing little organic matter through nanofiltration membrane. The changes of pretreated ground water in macroscopical target about polluting property of organic mat- ter and microcosmic targets about molecular weight distribution, property and so on were discussed, then the different influences to membrane fouling composing and forming were also analyzes. The paper confirms the main organic matter that results in membrane fouling is the matter whose molecular weight is more than 10 000, and optimizes technology structure about groundwater advanced treatment by membrane technology.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2008年第4期35-39,共5页
Membrane Science and Technology
关键词
地下水
纳滤膜
有机物
膜污染
groundwater
nanofiltration membrane
organic matter
membrane fouling
