Industrial preparation method of anionic resin loaded nano zirconia composite material

Abstract

The invention discloses an industrialized preparation method of an anionic resin-loaded nano zirconia composite material. The main preparation steps include: (1) adding anion exchange resin into alkali liquor, stirring and reacting to convert the resin into OH type, and washing with water to neutrality for later use; (2) dissolving zirconium salt in alcohol to prepare feed liquid for later use; (3) adding the material into the feed liquid, stirring and taking out after fully reacting; (4) adding alkali liquor, stirring, taking out after reaction, soaking with acid liquor, flushing with tap water to neutrality, and bagging; and (5) after the chemicals are added to the feed liquid and lye, directly applying to the next batch of production. The method has the advantages of simple process, noneed of heating and drying, short time consumption and low cost, and can effectively overcome the problem the nano zirconia is not easily loaded in anionic resin; the obtained product has stable zirconium loading amount and excellent decontamination performance, the large-scale production efficiency of the anion resin loaded nano zirconium oxide composite material is greatly improved, and the method has strong economic benefits and environmental protection benefits.

Description

technical field [0001] The invention belongs to an industrial preparation method of an anionic resin-loaded nano-zirconia composite material. Background technique [0002] There are a large number of inorganic anion pollutants in drinking water and sewage, such as phosphorus (phosphate, phosphite, hypophosphite, hyperphosphate, etc.), arsenic (arsenate, arsenite, etc.), fluoride, bromide , Selenate, etc. Some of these pollutants are highly toxic (such as arsenic, fluorine, bromine, selenium, etc.), which can easily cause damage to humans and other organisms; the other part is easy to cause eutrophication of water bodies (such as phosphorus, etc.), affecting water bodies. use value. For the above pollutants, scholars at home and abroad have developed and applied a variety of methods, including precipitation, electrocoagulation, membrane separation and adsorption. Among them, the adsorption method has been widely concerned and applied due to its advantages such as high remo...

AI Technical Summary

Problems solved by technology

This method can be applied to the gram-level preparation of anionic resin-based nano-zirconia, but it is difficult to apply to industrial production due to the high energy consumption of evaporation and concentration and high equipment requirements.

Chinese invention patent (application publication number CN107262072A, publication date: October 20, 2017) discloses an industrial preparation method of zirconium-loaded nanocomposite resin adsorbent, which solves the problem of laboratory preparation methods being directly extended to The heat transfer, mass transfer, flow and other problems faced in industrial scale production have initially met the needs of industrial preparation, but heating is still required in the salt immersion stage of the resin, which consumes a lot of energy and requires high equipment requirements; more important Unfortunately, due to the strong electrostatic repulsion between the zirconium salt ions and the resin matrix during the loading process, the loading effect of this method is still not good, and excessive zirconium salt needs to be added to force the hydrated zirconium cations into the resin, resulting in nano-zirconia Concentrated on the periphery of the resin carrier, the nanoparticles are obviously agglomerated, and the pores of the carrier are severely blocked, which reduces the site utilization efficiency of the nanoparticles

Images