Industrialized production method of catalytic composite defluorinating filter material

Abstract

The present invention relates to the field of water treatment material manufacture, and especially aims at an industrialized production method of a catalytic composite defluorinating filter material. A working principle of the catalytic composite defluorinating filter material is the same as that of bone black; and an exchange reaction between carboxyl and fluoride ions is conducted to reduce fluorine content in water. Materials for producing the catalytic composite defluorinating filter material comprise a main material, an auxiliary material and a chemical additive. The main material is a mixture or single substance of fragments of waste shell and eggshell; the accessory material is attapulgite clay; and the chemical additive is phosphoric acid. The catalytic composite defluorinating filter material is prepared through six production processes. Waste shell and eggshell are used as the main materials to substitute animal bones for generation of carboxylic calcium phosphate, so as to retain advantages of fluoride removal by bone black, as well as overcome fatal defects of weird smell and easy breaking. The attapulgite clay substitutes other organic and inorganic matters as a binder, and not only has high adhesion but also is associated with functions of multiple defluorinating and catalysis. The defluorinating filter material is processed into a ceramic ball shape, so as to eradicate a common terminal disease of filter material hardening during usage, as well as form abundant nano space and adsorption pores like habijabi shape. The three measurements form the catalytic composite filter material into an organic whole indispensable of any measurement, and the catalytic composite filter material has characteristics of high efficiency, strong interference resistance to raw water quality, no secondary pollution generation, waste utilization low carbon and environment-friendliness. Therefore, the invention will play an important role in livelihood project of rural drinking water safety in China.

Description

technical field [0001] The invention relates to the field of water treatment material manufacturing, in particular to an industrialized production method of a catalytic type composite defluorination filter material. Background technique [0002] The underground high-fluoride drinking water source is poisonous, and the drinking water of more than 80 million farmers and herdsmen in my country is caused by fluorosis: the mild ones are full of fluorosis and teeth, and the severe ones are rickety, and they will suffer from "not seeing the sky" all their lives. Days, bow your head and see your toes, you can't sleep flat when you're alive, and you can't be put in a coffin when you die." Skeletal fluorosis is accompanied by extreme pain; defluoridation is the top priority of my country's rural drinking water safety project. [0003] Using filter material to remove fluorine is an indispensable and important method; there are many kinds of filter materials for fluoride removal, and the...

AI Technical Summary

Problems solved by technology

[0003] Using filter material to remove fluorine is an indispensable and important method; there are many kinds of filter materials for fluoride removal, and the commonly used ones are activated alumina, activated zeolite and bone charcoal. Compared with bone charcoal, the former not only produces new secondary pollution during regeneration, but also in The fluoride removal capacity and the adaptability to raw water pH are far inferior to bone charcoal, but the application of bone charcoal is almost eliminated by activated alumina and activated zeolite. undrinkable taste