A kind of preparation method of natural mineral load type nanometer defluoride agent

A natural mineral and load-bearing technology, applied in the direction of chemical instruments and methods, silicon compounds, silicates, etc., can solve the problems of nano-material reunion and deactivation, secondary pollution of water bodies, etc., to avoid secondary pollution, prevent reunion, cost reduction effect
CN103706326BActive Publication Date: 2016-07-20HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Publication Date
2016-07-20

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Abstract

The invention discloses a preparation method of a natural mineral-supported nanometer defluoridation agent. The method comprises high-temperature activation treatment, acid activation treatment, alkali activation treatment and metal salt reaction. Due to the strong mechanical strength of natural zeolite, its interior is full of tiny holes and channels. Using it as the carrier of nano-fluorine removal materials can effectively fix nano-materials in its internal channels under the condition of water flow. Thereby avoiding the agglomeration and loss of nanomaterials, improving its ability to absorb fluorine, and can be regenerated and reused, reducing the cost of fluorine removal. The defluoridation agent of the present invention has a larger specific surface area, can provide more active sites to realize high adsorption capacity for fluorine, and can be widely used in high-fluorine surface water, groundwater purification treatment, fluorine-containing sewage treatment and the like.
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Description

Background technique

[0001] Fluorine is one of the essential trace elements for the human body, but when the daily intake of fluorine is too high, it will lead to endemic fluorosis. Drinking high-fluoride water for a long time will lead to fluorosis, dental fluorosis and bone fluorosis. In mild cases, it will cause tooth deterioration and loss, and in severe cases, it will cause bone sclerosis or osteoporosis, and even paralysis, resulting in loss of work ability. According to the survey of the Ministry of Health, endemic fluorosis is widely distributed in my country, and endemic fluorosis exists in most provinces. Therefore, effective control and removal of fluorine in water is an important issue related to the environment and human health.

[0002] Endemic fluorosis in my country is mainly divided into three types: one is drinking water type fluorosis, which is the most widely distributed type with the largest number of patients, and is mainly distributed in the vast areas ...

Claims

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