001 * 7 Softened Water Resin Electrical Standard Positive Resin Supplier

001 * 7 Softened Water Resin Electrical Standard Positive Resin Supplier

Storage of anion and cation exchange resin:

The fat of ion exchange trees contains a certain amount of water, which should be kept as much as possible during transportation and storage. If the resin loses water during storage, it should be soaked in concentrated saline water (-10%) first, and then gradually diluted. It should not be directly placed in water to avoid rapid expansion and breakage of the resin. In long-term storage, strong type resins should be transformed into salt type, while weak type resins can be transformed into corresponding hydrogen type or free base type or salt type, and then soaked in clean water. During storage or transportation, the resin should be kept in a temperature environment of 5-40 ° C to avoid overcooling or overheating, which may affect its quality. If there is no insulation equipment in winter, the resin can be stored in saline solution, and the temperature of the saline solution can be determined according to the temperature.
Pre treatment of new resin:

New resins often contain solvents, substances that have not participated in polymerization reactions, and small amounts of low polymers, and may also adsorb heavy metal ions such as iron, aluminum, and copper. When the resin comes into contact with water, acid, alkali, or other solutions, the soluble impurities mentioned above will be transferred into the solution, contaminating the effluent quality in the early stages of use. So, the new resin needs to be pre treated before being put into operation.

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.

Pre treatment of Yin Resin

The steps in its pretreatment method are the same as those in the cation resin pretreatment method; Then use

Soak in 5% HCl for 4-8 hours, then drain the acid solution and rinse with water until neutral; Then dissolve it in 2% -4% NaOHAfter soaking in liquid for 4-8 hours, drain the alkaline solution and wash with clean water until neutral for later use.

001 * 7 Softened Water Resin Electrical Standard Positive Resin Supplier
Once the resin loses water, it cannot be directly soaked in water during use. It can be soaked in clear saturated saline solution, and then gradually diluted with water to wash away the salt. During storage, it should be kept moist.

The height of the compacted layer is generally 150-200mm above the middle drainage pipe.
This type of resin contains a large number of strong acidic groups.

The compacted layer can prevent the rise or flow of the heat exchanger layer and intercept impurities in the incoming water.
The sulfonic acid group - SO3H is relatively easy to dissociate H in solution, making it strongly acidic. After the resin dissociates, negative groups such as SO3 in the body It can adsorb and combine with other cations in the solution, and these reactions exchange hydrogen ions in the resin with cations in the solution. Strong acid resins have strong dissociation ability and can dissociate in acidic or alkaline solutions and undergo ion exchange. After a short period of use, the resin needs to be regenerated, that is, the ion exchange reaction is carried out in the opposite direction to the chemical substance to restore the functional groups of the resin to their original state and facilitate reuse. As mentioned above, cationic resins are regenerated with strong acids. At this time, the resin releases the adsorbed cations and then combines with hydrogen ions to restore its original composition. 2. Weak acid cation resins contain weak acid functional groups, such as carboxyl COOH, which can dissociate hydrogen ions in water and become acidic. The resin dissociates. The remaining negative functional groups, such as R-COO - (where R is a hydrocarbon group).

The dense layer material is used for the use of white balls, and the ion exchange resin currently used is the same.