Softening water equipment is equipped with softening resin, which contains soft mineral sodium on the artificial ion exchange resin. It can undergo ion exchange reactions with hard minerals such as calcium and magnesium dissolved in water, and sodium ions will not accumulate on the surface of objects in the form of scale, so the harm to objects in contact with it is minimal. Resin filter material is a porous insoluble exchange material and an indispensable filter material in water treatment.
Ion exchange resin is a common water treatment material, and the operation of water softeners mainly relies on the ion exchange resin inside the equipment. Sodium ions exchange with calcium and magnesium ions in the water, softening the hard water. The ion exchange resin continuously adsorbs hardness ions until saturation, and then regenerates in the salt tank before being put back into use. But during the long-term exchange and regeneration process, the ion exchange resin will fail. What is the service life of the ion exchange resin?
In general, the lifespan of resin is about one year, which means it needs to be replaced once a year; If imported resin is used, high-quality resin can be used for about 1.5 to 2 years, but the usage time is longer.
But in practical use, it still depends on the quality of the treated water. If the hardness of the raw water is too high and the resin operation is overloaded, the frequency of resin replacement needs to be increased. So, how to determine whether the resin needs to be replaced?
The simplest method is to observe the water output. If the hardness of the softened water is still above 3PPM and the water production is significantly reduced, it indicates that the ion exchange resin in the water softener has failed and needs to be replaced.
Types of resin filter media
1. 001 * 7 (732) strong acidic styrene based cation exchange resin filter material is mainly used for hard water softening, desalination water, pure water and high-purity water preparation, wet metallurgy, rare element separation, antibiotic extraction, etc.
2. 201 * 7 (717) strong alkaline styrene based anion exchange resin filter is mainly used for the preparation of pure water and high-purity water, wastewater treatment, and extraction of biochemical products.
3. 001 * 4 (734) strong acidic styrene based cation exchange resin filter is mainly used for high-purity water preparation and antibiotic extraction. 04 201 * 4 (711) Strong alkaline styrene type I anion exchange resin. Mainly used for pure water preparation, radioactive element extraction, sugar solution decolorization, and series product preparation.
4. 201 * 4 (711) strong alkaline styrene type I anion exchange resin filter material is mainly used for pure water preparation, radioactive element extraction, sugar solution decolorization, and series product preparation
5. D001 macroporous strongly acidic styrene based cation exchange resin filter material is mainly used for high-speed mixed storage condensate water treatment, high-purity water treatment, secondary desalination mixed bed, water with high organic content, and organic reaction catalysts.
6. D201 macroporous strong alkaline styrene based anion exchange resin filter material is mainly used in high-speed mixed bed condensate water treatment equipment, wastewater treatment, and heavy metal recovery.
7. D113 macroporous weakly acidic styrene acrylic cation exchange resin filter is mainly used to remove bicarbonate, carbonate, and other alkaline salts from water. This product is very effective in removing alkalinity and hardness from water when paired with 001 * 7 (732).
8. D202 macroporous II strong alkaline styrene based anion exchange resin filter material is used for the preparation of pure water and high-purity water, suitable for water sources with high salt content and the extraction of biochemical substances, as well as decolorization of sugar solution.
9. D301 macroporous weakly alkaline styrene based anion exchange resin filter material is mainly used for high preparation, electroplating chromium containing wastewater treatment, etc.
10. 002 * 7 super strong styrene based cation exchange resin filter material is mainly used for boiler softening water of less than 10 tons, temperature metallurgy, rare element separation, and biomass extraction.
11. 001 * 10 (002SC) strong acidic styrene cation exchange resin filter material is mainly used in conjunction with weak acid resin for double-layer bed preparation.
12. 001 * 8IR ultra strong homogeneous porous biphenyl cationic resin filter material is mainly used for softening water, pure water preparation, extraction of lysine, glutamic acid, etc.
13. D002 catalyst resin filter material (dry hydrogen resin filter material) (macroporous strongly acidic styrene cation exchange resin filter material). Mainly used in the synthesis of MTBE through etherification of methanol and isobutene.
14. D254 (D204) macroporous strong alkaline quaternary ammonium cation exchange resin filter is mainly used for drug extraction in the pharmaceutical industry and extraction of heparin sodium from intestinal mucosa.
15. D-61 macroporous strong acidic styrene cation exchange resin filter material is mainly used for high-purity water treatment, and is matched with D-92 resin for circulating water treatment in the production process of ethylene glycol and methyl ethyl ketone.
16. D-62 macroporous strong acidic styrene based cation exchange resin filter material is mainly used in the food fermentation industry (VC, MSG) to improve conversion rate and pure water treatment.
17. D-85 macroporous propionic acid based weakly acidic cation exchange resin is used for the separation and purification of biochemical products.
18. D301-G macroporous weakly acidic styrene based anion exchange resin filter is mainly used for deacidification and deacidification in medical, food, and sugar production.
19. D311 macroporous acrylic weak base anion exchange resin filter is mainly used for the extraction of food, medical industry, biochemical drugs, decolorization of sugar solution, and drug decolorization.
20. D318 macroporous acrylic weak acid anion exchange resin filter is mainly used for the extraction and decolorization of biochemical substances such as citric acid and vitamin C.
How to maintain ion exchange resin?
1. Ion exchange resin should be kept moist during storage and transportation to prevent it from drying out and causing resin breakage. If the resin becomes dehydrated during storage, it can be soaked in 10% concentrated saline water and gradually diluted. It should not be directly placed in water to prevent rapid swelling and cracking of the resin.
2. During winter storage, the resin should be stored in an environment of 5-40 ℃ to avoid overcooling or overheating, which may affect the quality of the resin. If insulation is not possible in winter, the resin can be stored in saline solution, and the concentration of saline solution can be determined according to the temperature.
3. During the use of resin, it is necessary to avoid contact with metal oil stains, organic molecular microorganisms, strong oxidants, etc., in order to prevent a decrease in the resin's ion exchange capacity or even loss of function. 4. Pre treatment must be carried out before using new resin. Usually, the resin is first expanded with water, and then inorganic impurities (mainly iron compounds) can be removed with 4-5% dilute hydrochloric acid. Organic impurities can be removed with 2-4% dilute sodium hydroxide solution and washed to near neutrality. If used in pharmaceutical preparation, it needs to be soaked in ethanol.
