Welcome to the Qinsun Instruments Co., LTD! Set to the home page | Collect this site
The service hotline


Related Articles

Product Photo

Contact Us

Qinsun Instruments Co., LTD!
Address:NO.258 Banting Road., Jiuting Town, Songjiang District, Shanghai

Your location: Home > Related Articles > Field of application Analysis of nickel removal resin in galvanic waste water

Field of application Analysis of nickel removal resin in galvanic waste water

Author:QINSUN Released in:2023-04 Click:25

Anion and cation exchange resin storage:

Ion exchange resin grease contains a certain amount of water, which should be kept as much as possible during transport and storage. If the resin has dried out during storage, it should be soaked in concentrated salt water (-10) first, and then gradually diluted. Do not put it directly into water to prevent the resin from quickly expanding and breaking. In long-term storage, the strong resin should be converted into salt type, and the weak resin can be converted into the corresponding hydrogen type or free base type or salt type, and then soaked in clean water. During storage or transport, the resin must be kept at 5-40C, avoid overcooling or overheating, which will affect the quality . In winter, if there is no heat preservation equipment, the resin can be stored in salt water, and the temperature of the salt water can be determined according to the temperature.
Pre-treatment of new resin:

New resins often contain solvents, unpolymerized substances and a small amount of low polymers, and can also absorb iron, aluminum , copper and other heavy metal ions. When the resin comes into contact with water, acid, alkali or other solutions, the above soluble impurities will be transferred into the solution, which will affect the water quality in the initial stage of use.dirty. Therefore, the new resin must be pre-treated before it is put into use.


Pre-Positive Resin Processing

The pre-treatment steps for cationic resin are as follows:

First use saturated brine, which is equal to twice the volume of the resin to be processed, and place the resin in Soak in brine for 18-20 hours, then drain the brine, rinse with clean water, so that the drain water does not turn yellow; bornthen smell 2-4NaOH solution, the same amount as above, soak in it for 2-4 hours (or clean with a small flow rate), after draining the lye, rinse the resin until the drained water is almost neutral. Finally, use 5HCL solution, the amount is the same as above, soak for 4-8 hours, drain the acid and use clean < o:p>

Water floats to neutral before use.

Anion resin pre-treatment
The step in the pre-treatment method is the same as the positive resin pre-treatment The steps in the processing method are the same, please use

Think in 5HCL for 4-8 hours, then drain the acidic solution, wash with water until neutral; then dissolve with 2 -4NaOH

After soaking in the solution for 4-8 hours, pour wash off the lye and wash it with water until it is neutral.

Application field analysis of electroplating resin for nickel removal from wastewater 1. Water treatment

The demand for ion exchange resin in water treatment field is very large, accounting for about 90% of the output of ion exchange resin, and it is used for the removal of various anions and cations in water. At present, the largest resin consumption is used in the pure water treatment of thermal power plants, followed by the atomic energy, semiconductor and electricalonica industry.

2. Food Industry

Ion exchange resins can be used in industrial devices such as sugar refining, monosodium glutamate, wine refining and biological products. For example: the production of high fructose corn syrup is to extract starch from corn, then undergo a hydrolysis reaction to produce glucose and fructose, and then undergo an ion exchange treatment to produce high fructose corn syrup. The consumption of ion exchange resins in the food industry is second only to water treatment.

Ion exchanger

3. Pharmaceutical industry

The ion exchanger in the pharmaceutical industry is important for the development of a new generation of antibiotics and for the original Improving the quality of antibiotics plays an important role. The successful development of streptomycin is a prominent example. In recent years, there has also beenresearch commissioned by traditional Chinese medicine.

4. Synthetic chemistry and petrochemical industry

In organic synthesis, acids and bases are often used as catalysts for esterification, hydrolysis, transesterification, hydration and other reactions. The above reaction can also be carried out by using ion exchange resin instead of inorganic acid and alkali, and has more advantages. For example, the resin can be used repeatedly, the product is easy to separate, the reactor will not corrode, the environment will not be polluted, and the reaction is easy to control.

Ion exchange resin

The preparation of methyl tert-butyl ether (MTBE) is the use of macroporous ion exchange resin as a catalyst, and isobutylene and reaction of methanol, to replacement of the original ones which can cause serious environmental pollution.

5. Environmental protection

Ion exchange harsen are used on many worrying environmental protection issues. Currently, many aqueous or non-aqueous solutions contain toxic ions or non-ionic substances, which can be recycled with resins. Such as removing metal ions in electroplating waste liquid, recycling useful substances in waste liquid from film production, etc.

Ion exchange resin

6. Hydrometallurgy and others

Ion exchange resin, cation exchange resin and anion exchange resin can Separation, enrichment, purification of uranium and extraction of rare earth and precious metals from depleted uranium ore.