Resins

LSC-as resin for arsenic removal is a kind of polymer with functional groups with good physical and chemical properties Resin, with excellent strength index, can meet the requirements of higher resin loading layer. Used for water and food removal.

The maximum adsorption capacity of arsenic can reach 1.4g/L resin, and the removal accuracy can reach below 5ppb.

(Adsorption capacity and removal accuracy are related to arsenic content in mother liquor)

1. Pretreatment of new resin

Rinse the resin with 2-3BV pure water, followed by 2BV sodium hydroxide with 2% mass concentration and 8% mass at room temperature

The resin was pretreated with a molar sodium chloride solution and rinsed with pure water to a PH below 9

Can be. (Here, PH test paper, if PH meter test, less than 10.5 can be used).

2. Regeneration

After saturated resin adsorption, use pure water to exchange the material in the resin, use room temperature 2BV 2% mass concentration

The resin was recycled with sodium hydroxide and 8% sodium chloride solution, and then the resin was bleached with pure water

Wash until PH is below 9. (PH test paper here, if PH meter test, less than 10.5), It can be put into use in the next cycle.

3. Run

In the process of resin treatment, it is necessary to ensure that there is a certain height of material liquid on the upper layer of resin, and strictly prevent dry column operation.

Otherwise, it is easy to produce bias and affect the operation effect.

Resin treatment material liquid flow, can be adjusted according to the adsorption rate, generally controlled in 1~5BV/h.

(1) The water used in the process of using resin is deionized water.

(2) The resin bed should avoid bubbles, to prevent the flow caused by bubbles, affect the effect of the use of resin.

(3) To prevent resin contamination, resin after use, must be thoroughly cleaned with water to remove the running process. The accumulation of impurities in.

(4) In the process of transportation, strict prevention and odor, toxic substances and strong oxidants mixed pile, tar on resin.

Pollution is irreversible and should be avoided.Winter transportation needs to pay attention to warm, strictly prevent the resin sphere freezing crack.

(5) Inorganic salts should be avoided as far as possible in the resin channel and surface crystallization, affecting the adsorption effect of resin.

(6) The maximum use temperature of resin should not be higher than 45℃, the maximum column flow should not exceed 30BV/h, resin loading. Filling height: 500-4000mm.

(7) Handling, loading and unloading operation should be light and slow, stacked stable, regular, do not violently beat.

(1) Resin properties are very stable under normal storage and use conditions, insoluble in water, acid, alkali and organic. The solvent doesn't react with them.

(2) The resin needs a certain amount of water, and in the process of storage, the resin should be prevented from losing water. If found resin loss. When the water is dry, the resin should be soaked in saturated salt water to make the resin expand slowly, and then gradually Dilute the salt solution.

(3) Prevent resin from freezing or heating. General resin storage environment temperature is 5~40℃, if the ambient temperature Below 5℃, the resin can be soaked in a certain concentration of salt water, to achieve the purpose of anti-freezing. If the ambient temperature is higher than 40℃, the resin can be stored indoors and kept out of light.

(4) The storage time of resin is not easy to be too long, generally it is best not to exceed 1 year.

(5) In the storage process, strictly prevent and odor, toxic substances and strong oxidants mixed pile up.

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