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Removal of Arsenic from Groundwater
Preparation of Softening Water

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Softening & Demineralization-Power Industrial

Water Softening-softening Resin

Water hardness is usually calculated as Ca2+ and Mg2+.
Softening resin is a special resin specially used to soften water. It reduces the concentration of calcium and magnesium by ion exchange technology, so that the hardness of water is controlled less than 50 mg/L (CaCO3).
Common softening resin is a strong acid cation exchange resin which is typically regenerated with sodium chloride. Industrial water is often softened with a gel strong acid cation exchange resin, and macroporous strong acid cation exchange resin can be used at a high temperature. For a hard water having a high carbonate content, a weak acid cation exchange resin is usually used for softening.

Water Demineralization

Demineralization is deionization, removing cations and anions in water, also called desalting; the result is reduced solution soluble solids, so it is also called deashing. The water after demineralization is similar to distilled water, but the cost is much lower.

A double bed system of cation exchange resin and anion exchange resin commonly used in the demineralization process, or a mixed bed system using mixed bed resin. The double bed system is easy to regenerate, and the mixed bed system is complicated to regenerate, but with a high processing precision, so it is often used for polishing the water after other systems.

The removed cations include Ca2+, Fe3+, Mg2+, Mn2+, K+, Na+
Anions are: CO32-, HCO3-, Cl-, NO3-, SO42-, SiO2

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12 2021-10
Waste Gas VOCs Treatment Complete Set Equipment from The Customer Site

This is a set of dichloroethane treatment equipment, which helps to recover 2.16 tons of dichloroethane per day while meeting the emission requirements. This translates to a payback period of about one year. Containing chlorine, this waste gas cannot be incinerated, thus making the adsorption method the only option. Traditional adsorption materials have potential safety concerns, and are limited in service life and consistency in meeting the emission standards. After investigation, the customer finally chose to use resin adsorption.

06 2021-09
Sunresin (SZ300487,CHINA) and 2021 Half Year Result Summary

Stock code: 300487 Stock abbreviation: Sunresin Technology Bond Code: 123027 Bond Abbreviation: Sunresin Convertible Bond The following information represents a summary from the company's 2021 half year report. The official public information disclosed in Chinese is in accordance

04 2021-09
Sunresin to Join FTSE Global Equity Index Series

Sunresin will be added to the FTSE Global Equity Index Series ("GEIS"), following FTSE's most recent semi-annual review. This inclusion will become effective after the close of business on Friday, September 17, 2021. According to the latest review on August 20, 71 A-shares, including 11 large-cap s

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