New HAP-F environmentally friendly fluorine removal technology
亚游集团官方Jiangsu Yongguan Water Supply and Drainage Equipment Co., Ltd. and Hohai University, China University of Mining and Technology have formed production, academic, and research teams. After nearly a decade of theoretical exploration, technological breakthroughs, product production, and continuous upgrading, the process includes methods, filters Original application results including materials, technology and equipment. This achievement has successfully passed the scientific and technological achievements appraisal organized by the International Cooperation and Science and Technology Department of the Ministry of Water Resources in November 2010, and has been fully affirmed by relevant academicians and experts. It has reached the international advanced level in general, and its core technology has international leadership.
亚游集团官方The principle of HAP-F filter material's fluorine removal is mainly physical adsorption. Its main component is hydroxyapatite, and its surface characteristics and structure are porous single crystal or polycrystalline hexagonal structure. Because the solid surface of hydroxyapatite containing Ca2t forms a cationic semi-permeable membrane layer, it results in the adsorption of F- and cations, that is, the adsorption of F on the surface of hydroxyapatite. When high-fluorine raw water comes in contact with HAP-F filter material, the fluoride ions in the raw water are quickly adsorbed on the surface of the filter material, thereby reducing the fluorine content in the raw water.
Environmental protection, no risk of secondary pollution
Whether secondary pollution occurs in the defluoridation process is an important indicator for measuring whether the defluorination technology is environmentally friendly. The saturated defluorination filter was measured by ion chromatography.
The results show that the HAP-F waste after fluoride removal is saturated with fluorine, and there is no other ion precipitation, which can be directly landfilled without causing secondary pollution to the soil. The fluoride ions adsorbed by the HAP-F filter material will not dissolve again, and the backwash water does not contain fluorine. After precipitation, it can be directly used in the system and no waste water is discharged.
HAP-F defluoridation technology is aimed at the domestic high-fluorine water removal demand. This environmentally friendly and economical new type of defluorination filter is a kind of high-capacity drinking water defluorination filter that is industrially prepared using mineral materials And obtained the sanitation permit for aquatic products from the National Health and Planning Commission. At present, there are three types of HAP-F defluorination filter materials: spherical pellets, composite powders and in-situ defluorination agents. Depending on the fluorine content of the raw water and on-site conditions, several filter materials are used alone or in combination Fluorine process to achieve the purpose of fluoride removal.
next article：Advantage data collation ...