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What is the purpose of deionized water equipment to detect ion exchange resins?(2)

Sep 22, 2017

4, ion exchange agent density detection. The apparent density of the resin is used to calculate the amount of wet resin required for the ion exchange column. Wet density is generally 0.6-0.85g / ml; detection of resin wet density is easy to determine the size of the backwash strength, and mixed bed resin has a great relationship. Wet true density is generally about 1.04-1.30g / ml.

 

5, ion exchange resin contained in the water. Because the resin mesh has a certain amount of water, and resin cross-linking degree and porosity, the smaller the degree of cross-linking, porosity is greater, therefore, the detection of resin moisture moisture content, can indirectly reflect the resin cross-linking The size of the degree. General resin moisture content of about 50%.

 

6, ion exchange resin particle size. The particle size has a significant effect on the resin exchange capacity, the uniformity of the water distribution in the resin layer, the pressure drop of the water through the resin layer, and the exchange of backwash operations. The smaller the particle size of the resin, the greater the exchange rate, the greater the water loss, the greater the inlet and outlet pressure. Therefore, the particle size and operation operation has a great relationship.

 

7, ion exchange resin neutral salt decomposition capacity. The decomposition capacity of the resin neutral salt is mainly to determine the composition of the strong acid or strong base in the resin. Because of the different composition of the resin exchange groups, the ion exchange and adsorption intensity in water are also different. In addition, the decomposition of the neutral salt is also the dissociation ability of the resin exchange group. Dissociation ability, ion exchange speed, otherwise, slow. Detection of resin neutral salt decomposition capacity is important for the selection of resin.

 

8, ion exchange resin in the gray molecules and iron content, ash and iron will sink on the resin surface, plug the pores, easy to elute, long-term accumulation will affect the resin exchange capacity and service life. So the need for timely detection, to take measures.

 

9, ion exchange resin oxygen consumption. Oxygen consumption mainly reflects the degree of contamination by organic matter. After the resin is contaminated with organic matter, the cleaning water consumption increases, the working exchange capacity decreases, and the water quality is poor. Detection of resin oxygen consumption. To determine the degree of contamination of the resin, take timely and effective measures.