Ion exchange pure water treatment equipment is through the anion, cation exchange resin on the water in a variety of anions, cation replacement of a traditional water treatment process, Yin, cation exchange resin according to different proportions can be composed of ion exchange bed system, ion Exchange bed system and ion exchange bed (complex bed) system, and mixed bed (complex bed) system is usually used in reverse osmosis water treatment process used to produce ultra-pure water, high purity water terminal process, he is Currently used to prepare ultra-pure water, high purity water is one of the irreplaceable means. The effluent conductivity can be less than 1uS / cm below the effluent resistivity of 1MΩ.cm above, according to the different water quality and use requirements, the water resistivity can be controlled between 1 ~ 18MΩ.cm. It is widely used in the preparation of ultrapure water and high purity water, which is widely used in ultra-pure water, chemical, electroplating ultrapure water, boiler supply water and ultrapure water for medicine. The use of ion bed, mixed bed and usually we said that the ultra-pure water treatment equipment used in reverse osmosis host plus two mixed bed, the use of ion exchange method, the water can be ion state of the sun, anion to remove Sodium chloride (NaCl) represents inorganic salts in water.

First with water to wash the resin, and then with 4 to 5% of the HCl and NaOH in the exchange column in turn alternately soak 2 to 4 hours, between the acid and alkali with plenty of water leaching to the water close to neutral, so repeat 2 ~ 3 times, each time the amount of acid and alkali resin volume of 2 times. The last treatment using 4 ~ 5% of the HCl solution, put off the acid, rinse with water to neutral can be used.

Pretreatment of anion exchange resin:

First with water to wash the resin, and then with 4 ~ 5% NaOH and HCl in the exchange column in turn alternately soak 2 to 4 hours, between the alkaline acid with plenty of water leaching to the water close to neutral, so repeat 2 ~ 3 times, each time the amount of acid and alkali resin volume of 2 times. The last treatment using 4 ~ 5% of the NaOH solution, with the release of lye, rinse with water to neutral can be used.

Mixed ion exchange regeneration process:

Ion exchange resin in the use of a period of time, the adsorption of impurities close to saturation, it is necessary to carry out regeneration treatment, to restore the original composition and performance. At present, the domestic resin regeneration commonly used chemical acid-base method to restore the ability to exchange resin failure, the use of acid is usually used HCl or H2SO4, deployment concentration of about 3-5%; alkali use of NaOH, the deployment of the concentration of 3- About 5%.

First, backwashing Stratification:

Backwash flow rate of 10 m / h, backwash time 15 minutes to settle after the sun, anion resin layer interface is clear to determine the layered effect.

Second, into the regeneration liquid:

With about 20 minutes of time to pump the required regeneration of the liquid soak 2-3 hours after the use of positive washing method, the anion resin rinse to the effluent pH PH = 8-9 or so, the sun resin rinse to the acidity PH = 5- 6 or so.

Third, mixed:

From the bottom into the nitrogen (also available compressed air, vacuum pumping, etc.) for mixing, inlet pressure 0.1 ~ 0.15MPa, air intake 2.5 ~ 3.0 m 3 / (m 2 · min), mixing time is generally 5 to 10 minutes , The resin in the column is fully mixed into the end.

Guangzhou Jinfeng Light Industry Machinery Co. ,Ltd is a manufacturer that produces cosmetic ,pharmaceutical,chemical and dairy product equipment. The main products are vacuum homogeneous emulsifying machines ,reverse osmosis water treatment machines ,automatic and semi-automatic filling machine and all kinds of stainless steel tanks,all of which are of reliable quality and good effect.E-Mail: sales@jfqgjx.com / joyce@jfqgjx.com