Quotation for soft water resin, food grade cationic resin

NegotiableUpdate on 05/06

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Overview

Soft water resin food grade cationic resin quotation $r $n First, use saturated saline solution, which is about twice the volume of the treated resin. Soak the resin in the saline solution for 18-20 hours, then drain the saline solution and rinse with clean water to make the discharged water not yellow; Next, use a 2% -4% NaOH solution with the same amount as above, soak in it for 2-4 hours (or perform a low flow cleaning), drain the alkaline solution, and rinse the resin until the discharged water is close to neutral. Afterwards, use a 5% HCl solution with the same amount as above, soak for 4-8 hours, drain the acid solution, and drift with clean water until neutral for later use.

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Quotation for soft water resin, food grade cationic resin

Pre treatment of Yang resin

The pretreatment steps for cation resin are as follows:

Firstly, use saturated saline solution, which is approximately twice the volume of the treated resin. Soak the resin in the saline solution for 18-20 hours, then drain the saline solution and rinse with clean water to ensure that the discharged water does not turn yellow; Next, use a 2% -4% NaOH solution with the same amount as above, soak in it for 2-4 hours (or perform a low flow cleaning), drain the alkaline solution, and rinse the resin until the discharged water is close to neutral. Afterwards, use a 5% HCl solution with the same amount as above, soak for 4-8 hours, drain the acid solution, and use a clear solutionDrift the water to neutral for later use.

Quotation for soft water resin, food grade cationic resin
Acidic solution dissolves alum dental floss, turning it into Fe3, which may also form iron pollution. Sodium ion exchange cation exchange resin, which is generally used for softening water treatment, is more susceptible to iron pollution. Iron pollution to anion resin is mostly caused by Fe2O3 and sodium chloride contained in the regenerated caustic soda solution, which generate ferrates (such as Fe2O43). After entering the anion bed with alkaline solution, ferrates undergo decomposition reaction due to the decrease in acidity and alkalinity compared to the previous period, Fe3 further forms iron (hydroxyl) 3, and iron contamination is caused by the surface of anion resin particles. 3. Identification method: Take a certain amount of resin contaminated with iron, wash it with clean water, soak it in a saline solution, regenerate for about half an hour, pour it out for consumption, and then wash it with distilled water 2 to 3 times. Take out a small part of the resin and put it into a stoppered test tube, add 6mol/L solution, add twice the volume of resin, cover it tightly and shake for 15 minutes, and take out a small part of the acidic solution into another test tube.

The types of chemically active groups in resins determine their main properties and categories.
This resin can be regenerated with salt water (without strong acid) after being used in sodium form.

Firstly, it can be divided into two categories: cationic resin and anionic resin, which can respectively exchange ions with cations and anions in solution.
For example, anionic resins can be converted into chlorine type and reused, releasing Cl - during operation while adsorbing and exchanging other anions. Its regeneration only requires a salt solution.

Cationic resins are divided into strong acidic and weak acidic categories, while anionic resins are divided into strong alkaline and weak alkaline categories (or further divided into medium strong acid and medium strong alkaline categories).