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为了掌握改水质量,及时改进措施,加强管理,充分发挥防氟改水效益,我们于1993年4月对防氟井管理和受益现状进行了调查。结果如下。1 调查内容及方法1.1 水源调查 以防氟自来水为对象,按照已掌握的防氟自来水的分布,由专业技术人员组成调查组,对已改水的病区逐屯逐井管结构、井深、供水工艺流程及管理受益情况。1.2 水氟含量测定 用采样瓶采集水样,封闭保存,在3日内用氟离子选择电极法测定水氟含量。2 调查结果2.1 水源调查 共调查防氟自来水151处,均为深层地下水源,井深78～128m,其中大口铁管井56眼,大口水泥管井95眼。供水工艺流程均采用电机水泵提水至贮水塔或压力罐,通过管网将水送到用户。其中井上设备完好、水质合格管理制度建全、坚持全年受益128处,占84％。
In order to grasp the quality of water diversion, promptly improve measures, strengthen management and give full play to the benefits of fluorine-free water diversion, we conducted a survey on the status of anti-fluorine well management and benefit in April 1993. The result is as follows. 1 Survey contents and methods 1.1 Water survey To prevent fluoride water as the object, in accordance with the distribution of anti-fluoride tap water has been mastered, the investigation team composed of professional and technical personnel, the water area has been diverted by Tuen by well tube structure, well depth, water supply Process and management benefit. 1.2 Determination of water fluoride content with a sampling bottle to collect water samples, closed preservation, within 3 days with fluoride ion selective electrode method for the determination of water fluoride content. 2 Survey Results 2.1 Water Survey A total of 151 anti-fluoride tap water were surveyed. All of them were deep groundwater sources with a depth of 78-128 m, of which 56 were large-diameter iron pipe wells and 95 were large-diameter cement pipe wells. Water supply process using motor pumps to water storage tower or pressure tank, the water will be sent to the user through the pipe network. Among them, the in-well equipment was in good condition and the water quality compliance management system was completed. It insisted that it benefited 128 places in the whole year, accounting for 84%.