Ion exchange resin often contains solvent, did not participate in the polymerization of substances and a small amount of low polymer, may also absorb iron, copper, aluminum and other metal ions, when the resin and acid or other solutions contact, the above soluble impurities, will be transferred into the solution, in the early use, pollution of the water quality.Therefore, the new resin should be pretreated in the ion exchange equipment before use.

The pretreatment of Cation Exchange Resin:

1.Use Saturated salt water, the amount is 3 times of the resin to be treated,Soak the resin in salt water for 18-20 hours,Remove the Salt water, Rinse with clear water so that the discharge water is not yellow.

2.Use 2-4% NaOH Solution,The amount is 3 times of the resin to be treated. Soak for 4 hours, remove the  alkali liquor ,then Wash to neutral.

3.Last,Use 5% Hcl Solution,the amount is 3 times of the resin to be treated, Soack for 4-8 hours, remove the acid liquid, then wash to neutral.

The pretreatment of Anion Exchange Resin:

1. Use Saturated salt water, the amount is 3 times of the resin to be treated,Soak the resin in salt water for 18-20 hours,Remove the Salt water, Rinse with clear water so that the discharge water is not yellow.

2.Use 5% Hcl Solution,the amount is 3 times of the resin to be treated, Soack for 4-8 hours, remove the acid liquid, then wash to neutral.

3.Use 2-4% NaOH Solution,The amount is 3 times of the resin to be treated. Soak for 4 hours, remove the  alkali liquor ,then Wash to neutral.