Silicone Oil Pollution of Ion Exchange Resin

　　Anion exchange resins are vulnerable to silicon pollution because of improper regeneration conditions or poor regeneration process control. Soluble silicides adsorbed on strong basic anion exchange resins are hydrolyzed to silicic acid. Silicate is polymerized and partially dehydrated to form a polymer deposited in the resin layer.

　　Anion exchange resins are prone to silicon pollution because of improper regeneration conditions or improper control of regeneration process. The soluble silicide adsorbed on strong basic anion exchange resin was hydrolyzed to silicic acid. Silicate is polymerized and partially dehydrated to form a polymer deposited in the resin layer.

　　Brain-solid Panax notoginseng complex can block the good L channel of resin Eeyyore to avoid acid anhydride dropping. When

　　When the resin is contaminated by silicon, the leakage of silicon dioxide in the effluent of anion bed increases, the removal efficiency of silicon decreases, the working ability of anion exchange resin decreases, and the alkali consumption increases. Prevent

　　Silicon contamination methods:

　　1. Reasonable regeneration process conditions were determined by adjusting the test.

　　2. The vaginal bed should regenerate immediately after failure, but not in a failure state. Ion exchange resin is composed of classification name, skeleton (or gene) name and basic name. The pore structure is divided into two types: gel type and large pore type. All macroporous resins with physical pore structure are added "big hole" before the full name. If the classification is acidic, the word "yang" should be added before the name, while the classification is alkaline, and the word "yin" should be added before the name. Such as: macroporous strong acidic styrene cation exchange resin. Regeneration at 4050 C with 4% OH solution

　　3. The colloidal silicon of strong basic anion exchange resin was reduced to the minimum.

　　Oil contamination of ion exchange resin is mainly caused by mineral oil in raw water or mineral oil in water treatment process. These oils are adsorbed on the surface of resin particles, resulting in blockage of resin micropore, which reduces the working exchange capacity of resin. Oil may also bind resin, resulting in poor or uneven flow of water in trees and lunar layers, resulting in deviation, and deterioration of water quality.

　　Resin is contaminated by grease, the color will change from brown to black, just like iron pollution, the feeling of greasy hands. If the resin is put into the test tube, water twice the volume of the resin is injected, and the rainbow (reflective spectrum of oil droplets) on the surface of the water is observed, it can be judged that the ion exchange resin is polluted by oil.

　　Resuscitation: The resin in the resin can be effectively removed by cyclic backwashing of the resin in the exchange bed and the NaOH solution at 35-40 C. In the cleaning process should be added

　　NaOH to maintain NaOH

　　Concentration. Ion exchange resin is composed of classification name, skeleton (or gene) name and basic name. The pore structure is divided into two types: gel type and large pore type. All macroporous resins with physical pore structure are added "big hole" before the full name. If the classification is acidic, the word "yang" should be added before the name, while the classification is alkaline, and the word "yin" should be added before the name. Such as: macroporous strong acidic styrene cation exchange resin. Ion exchange resins can be divided into styrene resin and acrylic resin according to their matrix types. The main properties and types of resins are determined by the types of chemical active groups in resins. Firstly, it can be divided into cationic resins and anionic resins, which can exchange ions with cations and anions in solution respectively. Cationic resins can be divided into strong acidity and weak acidity. Anionic resins can be divided into strong alkalinity and weak alkalinity.