Macroporous anion exchange resin

NegotiableUpdate on 05/06

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Overview

D301 macroporous anion exchange resin uses 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 drift with clean water until neutral for later use.

Product Details

D301 macroporous anion exchange resinProfessional production: anion and cation exchange resin, macroporous adsorption resin, softened water resin, mixed bed MB resin, 18 megaohm ultra pure water polishing resin, wire cutting slow wire resin, sewage decolorization resin, electroplating wastewater nickel and chromium removal resin, iron, copper, phosphorus, boron, and heavy metal removal resin, acid recovery resin, chelating resin, food grade resin, alum extraction resin, gold absorption resin, silver extraction resin, strong acid, strong alkali, weak acid, weak alkali. There are dozens of models in four categories: 001 x7、001x8、732、717、201x7、201x4、D001、D201、D301、D113、D101、H103、D403、D408 wait

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 5-40C 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 solution

Drift 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% NaOH

After soaking in liquid for 4-8 hours, drain the alkaline solution and wash with clean water until neutral for later use.

Product Name:	D301Macroporous weakly alkaline anion exchange resin
Product image:
Product Introduction:	D301It is styrene with a macroporous structure-Diethylbenzene copolymer mainly carries tertiary amine groups[-N(CH3)2]Anion exchange resin. Mainly used for the preparation of pure water and high-purity water, especially suitable for the treatment of water sources with high salt and organic content. It can also be used for chromium containing wastewater treatment, sugar solution decolorization, etc.
Physical and chemical performance indicators:	indicator name	indicator
	Execution standard:	GB/13660-92
	appearance ：	White opaque spherical particles
	Factory type ：	Free amine type
	water content%：	50.00-58.00
	Quality full exchange capacitymmol/g：	≥4.8
	Volume full exchange capacitymmol/ml：	≥1.4
	Wet visual densityg/ml：	0.65-0.72
	Wet true densityg/ml：	1.03-1.06
	Range granularity%：	(0.315-1.25mm)≥95
	Lower limit granularity%：	(<0.315mm)≤1
	Effective particle sizemm：	0.400-0.700
	Uniformity coefficient ：	≤1.60
	Post-grinding sphericity ratio%：	≥90
Reference indicators for use:	indicator name	indicator
	pHscope	1-10
	Operating temperature°C	OH:100 CL:40
	Transformation inflation rateOH ˉ- CL ˉ)%	≤25
	Work exchange capacitymmol/L	900
	Operating flow ratem/h	10-40

The selectivity of ion exchange resin is related to the following factors:
1. The more charge an ion carries, the simpler it is to be adsorbed by anion exchange resin. For example, divalent ions are more easily adsorbed than monovalent ions.
2. For ions with the same charge, ions with larger atomic numbers are more easily adsorbed.
3. Compared with dilute solutions, valence ions are more easily adsorbed by resins in concentrated solutions. Generally speaking, for H-type strong acidic cation anion exchange resin, the selection order of ions in water is important. For OH type strong alkaline anion exchange resin, the selection order of anions in water. The selectivity of anion exchange resin is very useful for analyzing and distinguishing chemical water treatment processes.
Control the quality of resin inlet water:
1. Turbidity of water: ≤ 5mg/L for downstream regeneration exchangers and ≤ 2mg/L for convective regeneration exchangers. Ion exchange resin
2. Residual active chlorine: Free chlorine ≤ 0.1mg/L.
3. Chemical oxygen demand (COD) ≤ 1mg/L.
4. Iron content: compound bed AC ≤ 0.3mg/L, mixed bed AC ≤ 0.1mg/L.
Check the contamination status of the cation exchange resin after every 10-20 weeks of operation. Discover pollution and promptly handle it using corresponding methods.
The present invention relates to a method for reducing the volume of cation exchange resin, comprising using nano zero valent iron as a catalyst, placing the cation exchange resin and nano zero valent iron in a reaction vessel and stirring at a reaction temperature of 60 ℃ to 99 ℃; And adding H2O2 to the reaction vessel, the hydroxyl radicals generated by the reaction between nano zero valent iron and H2O2 oxidize and decompose the cation exchange resin, thereby reducing the volume of the cation exchange resin.