A porous ultrafiltration ceramic material, products containing the material and its preparation

Abstract

The invention relates to the field of filter materials, more specifically, the invention relates to a porous ultrafiltration ceramic material, products containing the material and preparation thereof. The porous ultrafiltration ceramic material contains lithium element, the average pore diameter is 3-19nm; the specific surface area is 1-2m 2 / g. The porous filter material provided by the present invention is a new type of ceramic water purification material that is calcined at high temperature through ceramic nano-pore-making technology based on the principle of permeation of the natural soil and rock layers. The material is environmentally friendly, does not change the natural properties of water, and conforms to the concept of original ecological health ; Energy saving and no waste water; high temperature resistance, acid and alkali resistance, and wide application environment. It is currently the world's leading water purification technology for ceramic filter materials, and has a new breakthrough in the field of water purification.

Description

technical field [0001] The present invention relates to the field of filter materials, and more particularly, the present invention relates to a porous ultrafiltration ceramic material, a product containing the material and its preparation. Background technique [0002] In various fields of solution purification and filtration or household tap water purification, filter materials for filtration are mostly used. [0003] At present, the mainstream technologies of filter materials for household water purification on the market mainly include: (1) Diatomite ceramic filter materials: Diatomite is a siliceous rock, mainly distributed in China, the United States, Japan, Denmark, France, and Romania. It is a biogenic siliceous sedimentary rock, which is mainly composed of the remains of ancient diatoms. Diatom mineral is a kind of natural porous material with its own pores and a pore size of about 1 micron. Its particle surface has countless tiny pores. The processed diatom mud ce...

AI Technical Summary

Problems solved by technology

However, the comprehensive average pore size of the diatom mud ceramic filter material is about 1 micron, the pore size is large, and the water purification is not thorough. It is necessary to sacrifice a lot of the material of the filter material itself. When sanding with sandpaper, the pollutants and the surface layer of the filter material need to be removed. The thickness of the filter material is large, and the relatively fine powder that falls off during the grinding process will enter the pores of the filter material again. Cause secondary clogging of the filter holes, cause the flow rate and cleaning cycle to gradually decrease after each cleaning and polishing, and the diatom mud ceramic filter material will be exhausted after more than ten times of polishing and cleaning, the service life is short, and the cost is high. troublesome cleaning

(2) Hollow fiber ultrafiltration membrane: The ultrafiltration membrane has relatively high filtration accuracy and can filter harmful substances including bacteria. However, the material of the ultrafiltration membrane is chemically synthesized, which has a bad taste and short life. It is easy to age and crack, and it is not easy to find, and there is a risk of use

(3) RO reverse osmosis membrane: its material is relatively environmentally friendly, but the principle belongs to physical and chemical methods rather than pure physical filtration, which requires electricity and wastewater, and the cost of use is high; and the purified water quality removes harmful substances as well as It is a pure water molecular solvent, which violates the laws of nature and changes the natural properties of water. There is a huge controversy on the issue of healthy drinking water.

Images