Active aluminum oxide fluoride-removal adsorbing material with different surface characteristics as well as preparation method and application thereof

A surface feature and adsorption material technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of difference in fluoride ion adsorption effect, large reactor, and decrease in adsorption capacity, etc., to achieve improved removal Effect of fluorine adsorption capacity

CN103170302AActive Publication Date: 2013-06-26RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Publication Date: 2013-06-26

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Abstract

The invention relates to a fluoride-removal adsorbing material for removing fluorides in drinking water and in particular relates to an active aluminum oxide fluoride-removal adsorbing material with different surface characteristics as well as a preparation method and an application of the active aluminum oxide fluoride-removal adsorbing material. The active aluminum oxide fluoride-removal adsorbing material with different surface characteristics is obtained by carrying out the processes including sufficient chemical reaction, ageing, drying, grinding and the like into an aluminum salt aqueous solution, a chlorine salt aqueous solution and an alkali aqueous solution, wherein the specific preparation process parameters are determined by water quality chemical characteristics of to-be-treated water. Based on active aluminum oxide fluoride-removal adsorbing material with different surface characteristics, the actions including complexing, condensing and the like are carried out to transfer free fluorides in the water into complexing fluorides, so that the adsorbing performances of the active aluminum oxide fluoride-removal adsorbing material with different surface characteristics are greatly improved, the adsorbing period is prolonged and the operation cost is reduced. Fluorides in the drinking water are removed by adopting the method disclosed by the invention, so that the treated water can reach the national drinking water standards.

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Description

technical field

[0001] The invention relates to a fluorine removal adsorption material for removing fluorine in drinking water, in particular to an active aluminum oxide fluoride removal adsorption material with different surface characteristics and a preparation method thereof, and the active aluminum oxide fluoride removal adsorption material with different surface characteristics in Application in removing fluoride from drinking water. Background technique

[0002] There is relatively common groundwater fluorine pollution in my country. Fluorine removal and control technology in drinking water is a hot and difficult issue in domestic and foreign research. The commonly used defluoridation technologies at home and abroad mainly include activated alumina adsorption, electrodialysis, bone charcoal adsorption filtration, ion exchange resin bed filtration, aluminum salt coagulation precipitation method and membrane filtration. Various technical methods have different advantag...

Claims

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