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In our life, water treatment equipment is familiar with the softening water equipment, but the deionized water treatment equipment is not very well understood. Deionization water treatment equipment according to different processes, the principle of deionization is different, now commonly used reverse osmosis deionization, EDI desalination, anion and cation exchange resin deionization, let's talk about anion, cation exchange resin deionization.
Anion and Cation Exchange Resin Deionization Method for Electrodeionized Water Equipment
A traditional water treatment process by replacing anions and cations in water with anions and cations exchange resins. Ion exchange positive bed system, ion exchange negative bed system and ion exchange mixing can be formed by mixing anions and cations exchange glass tank membrane cleaning equipment resins in different proportions. Bed system, and mixed bed system is usually used in reverse osmosis and other water treatment processes to produce ultra-pure water, high-purity water terminal process, which is currently used to prepare ultra-pure water, high-purity water coating water treatment equipment is one of the irreplaceable means. The effluent conductivity can be less than 1uS/cm and the effluent resistance can reach more than 1M.cm. According to different water quality and application requirements, the effluent resistance can be controlled between 1 and 18M.cm. It is widely used in the preparation of industrial ultra-pure water and high-purity water, such as electronics, power ultra-pure water, chemical industry, electroplating ultra-pure water, boiler supply water and medical ultra-pure water. Ion exchange method can remove cations and anions in water. NaCl is used to represent inorganic salts in water. The basic reaction of water desalination can be expressed by the following equation:
A. Cation Exchange Resin: R-H+Na+R-Na+H+
B. Anion Exchange Resin: R-OH+Cl-R-Cl+OH-
The general reaction formula of cation and anion exchange resin can be written as follows: RH+ROH+NaCl-RNa+RCL+H2O. It can be seen from this that NaCl in water has been replaced by H+and OH-on the resin respectively, while the reaction product is only hydrogen peroxide, thus achieving the effect of removing salt in water.
Reverse osmosis deionization of deionized water treatment equipment
Reverse osmosis deionization is mainly a method of separating ions from water by using reverse osmosis membrane prototype. Reverse osmosis membrane can intercept substances larger than 0.0001 micron. It is the finest membrane separation product. It can effectively intercept all dissolved salts and organic substances with molecular weight greater than 100, and allow water at the same time. Sons pass through, and most of the dissolved salts are cut off in the form of ions.
EDI Deionization Method for Ed Electrodeionized Water Equipment
In order to obtain high purity water, first of all, some ions are removed by reverse osmosis after pretreatment, then some ions are removed by EDI electrodeionization module. EDI deionization method mainly relies on two electrodes.
Author: Hangzhou Water Shield Technology Co., Ltd.
Website: http://www.zjhzsd.com/
Key words: deionized water treatment equipment, coating water treatment equipment, glass tank membrane cleaning water equipment
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