Application of nanofiltration processes to fluoride removal from groundwaters in the Chiang Mai Basin
Application of nanofiltration processes to fluoride removal from groundwaters in the Chiang Mai Basin
复制标题
纳滤工艺在清迈盆地地下水除氟中的应用
DOI：
10.2208/jscejg.62.403
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
S. Wattanachira
中科院分区：
文献类型：
--
作者：
Y. Matsui;T. Takeda;S. Takizawa;A. Wongrueng;S. Wattanachira
地下水中的高浓度氟已被观察到在承压含水层的冲积沉积物中，
清迈盆地。采用纳滤工艺控制当地居民氟暴露，
患有严重的氟牙症和氟骨症。
膜工厂使用聚酰胺纳米过滤器，发现根据不同的氟离子浓度，
对进料沃茨pH值的影响。虽然在中性至碱性pH下氟化物去除率高，但在碱性pH下，
膜表面被估计是膜污染的主要问题。预处理工艺的优化组合
通过对地下水水质和运行状况的调查，对膜厂进行了评价。
The highly concentrated fluoride in groundwater has been observed in the confined aquifers of the alluvial sediments in the
Chiang Mai Basin. Nanofiltration process was applied to the control of fluoride exposure to the local residents, who have
suffered from serious dental and osteal fluorosis.
The membrane plants used polyamide nanofilters, which were found to have different fluoride removal rates depending
on pH of feed waters. Although fluoride removal rates were high at neutral to basic pH, calcium carbonate scale on the
membrane surface was estimated to be the major problem in membrane fouling. Optimum combination of pretreatment in
the membrane plant was evaluated through the investigation on the groundwater quality and the operational conditions.