Application of a silicon-phosphorus crystal as a fluorine-reducing material in water treatment

Abstract

The invention discloses the application of a silicon-phosphorus crystal as a fluorine-reducing material in water treatment. The silicon-phosphorus crystal has considerable adsorption force and adsorption capacity. When fluorine-containing water passes through the silicon-phosphorus crystal filter material, the surface adsorption force field is Fluorine will be adsorbed on the grid of the material to form fluoride molecular clusters that are insoluble in water, which will be removed by washing. Silicon phosphorus crystals have a dispersing effect on colloidal particles in water and can combine with colloids deposited on the pipe wall. Or form complexation or chelation with ions attached to the tube wall to change the crystal structure. Silicon phosphorus crystal not only has a strong defluoridation effect, but also can increase or decrease silicon phosphorus according to the amount of water that needs to be treated with excess fluorine. At the same time, the effect of removing fluorine is greatly enhanced. 1.5KG silicon-phosphorus crystal can treat about 500T of water with fluorine exceeding the standard. During use, there will be no continuous reduction and regeneration. The price is cheap, low cost, and the effect of fluoride reduction is good.

Description

technical field [0001] The invention relates to the application of a silicon-phosphorus crystal as a fluorine-reducing material in water treatment. Background technique [0002] The current defluoridation filter materials are anion resin filter elements, activated carbon filter elements, activated alumina filter elements or calcium hydroxyphosphate filter elements, etc. These filter elements are not only expensive and costly, but also need to be regenerated frequently, and the effect of fluoride reduction is not good. Domestic defluoridation is mainly carried out by some large water plants to defluoridate water sources. Such defluoridation devices are relatively large, and the key needs to be regenerated frequently. The service is difficult and the cost is relatively high. It is not suitable for widespread promotion in remote rural areas with endemic fluorosis. Contents of the invention [0003] The invention provides the application of a silicon-phosphorus crystal as a fl...

AI Technical Summary

Problems solved by technology

[0002] The current defluoridation filter materials are anion resin filter elements, activated carbon filter elements, activated alumina filter elements or calcium hydroxyphosphate filter elements, etc. These filter elements are not only expensive and costly, but also need to be regenerated frequently, and the effect of fluoride reduction is not good.

Domestic defluoridation is mainly carried out by some large-scale water plants to defluoride the water source. Such a defluoridation device is relatively large, and the key needs to be regenerated frequently. The service is difficult and the cost is relatively high. It is not suitable for widespread promotion in remote rural areas with endemic fluorosis.