Risk assessment of fluoride in groundwater in Asian countries and development of countermeasure technologies

亚洲国家地下水氟风险评估及对策技术开发

• 批准号: 19404013
• 负责人: TAKIZAWA Satoshi
• 金额: $ 10.82万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19404013/
• 关键词: フッ素; 地下水; 健康リスク; フッ素歯牙症; 地理情報システム; 膜汚染; シリカ; 逆浸透膜; ノツ素歯牙症

People living in Lamphun Province in the Chiang Mai Basin, Thailand, are suffering from fluoride intake from groundwaters. In this study, fluoride concentration in the groundwaters, the current status of health effects, and fluoride intake were investigated. Ultra-low-pressure reverse osmosis membranes were used to remove fluoride from groundwaters. It was revealed that fluoride-laden groundwater is widely distributed in Lamphun Province, and the maximum concentration was 16.1mg/L. Although their drinking water has been switched from groundwater to fluoride-free bottled water, high fluoride concentration was detected in their urine samples. Since their families still use groundwater for cooking, it was found that cooked rice was the major intake source of fluoride. When the local reverse-osmosis membrane plants were investigated, it was found that fluoride was removed by these facilities, but most of the pre-treatment processes were not functioning. Both calcium and silica cause membrane fouling and bring down the permeability, but the removal rates of fluoride went up or down depending on the condition of membrane fouling.

生活在泰国清迈盆地兰丰省的人们正遭受着从地下水中摄入氟化物的痛苦。本研究调查了地下水中氟的浓度、对健康的影响现状和氟的摄入量。采用超低压反渗透膜去除地下水中的氟化物。结果表明，兰州市地下水中氟含量较高，最高可达16.1 mg/L，虽然改水为无氟瓶装水，但尿氟含量较高。由于他们的家庭仍然使用地下水做饭，因此发现煮熟的米饭是氟的主要摄入量来源。当调查当地的反渗透膜厂时，发现这些设施可以去除氟化物，但大多数前处理工艺都不起作用。钙和二氧化硅都会造成膜污染，降低膜的通透性，但对氟化物的去除效果取决于膜污染的情况。

项目成果

Reducing the impact of fluoride intake in Thailand

减少泰国氟化物摄入量的影响

• 发表时间: 2008
• 期刊: Asian Water December
• 作者: Takeda T.;Takizawa S.
• 通讯作者: Takizawa S.

Child-education program for the reduction of health risks due to fluoride in water sources in the Chiang Mai Basin

旨在减少清迈盆地水源中氟化物造成的健康风险的儿童教育计划

• 发表时间: 2010
• 期刊: Water Science and Technology Vol. 61, No. 9
• 作者: Takizawa;S.;Takeda T.;Wongrueng A.;Wattanachira S.
• 通讯作者: Wattanachira S.

Analysis of ULPRO membrane fouling used for groundwater defluoridation

地下水除氟用ULPRO膜污染分析

• 发表时间: 2008
• 期刊: Environmental Engineering Research 45
• 作者: Wongrueng;A.;Takizawa;S.;Matsui;Y.;Oguma K.;〓;S.
• 通讯作者: S.

NF膜を用いた地下水中のフッ素除去の課題

使用纳滤膜去除地下水中氟化物的问题

• 发表时间: 2007
• 作者: 松井康弘;滝沢智;Aunnop Wongrueng
• 通讯作者: Aunnop Wongrueng

Groundwater defluoridation by Ultra Low Pressure Reverse Osmosis Membrane

超低压反渗透膜地下水除氟

• 发表时间: 2007
• 期刊: Proceedings of the International Symposium on Southeast Asian Water Environ 5
• 作者: Wongrueng;A.;Matsui;Y.;Takizawa
• 通讯作者: Takizawa