Ion Exchange Water Treatment Technology Services

Ion exchange technology removes some of the inorganic contaminants such as anions and cations from water. As a water treatment specialist, BOC Sciences can develop water treatment technologies to provide customized solutions for our customers. Our solutions include the development of processes for wastewater treatment, desalination, and the optimization of these processes.

Principle of Ion Exchange Technology

The principle of ion exchange technology: first fill the resin with Na⁺, Cl^-, H⁺ and other replacement ions, when the wastewater flows through the resin, Ca²⁺ and Na⁺ in the water replace Na⁺, Cl^-, H⁺ in the water and then adsorbed on the resin, reducing the salinity and hardness of the output water.

Fig. 1 Waste brine management strategies for drinking water treatment using ion exchange. ^[1]

Wastewater Treatment Services

1. Copper-containing wastewater treatment services

Higher concentrations of copper are toxic to living organisms, and the copper discharged into the water body can be enriched by living organisms through the food chain. Ion exchange resin can effectively remove copper ions from wastewater to achieve high purification.

2. Mercury-containing wastewater treatment services

Cation exchange resins can be used to treat acidic wastewater in the form of mercury ions, while for alkaline wastewater, weak acid resins can be used. Strongly alkaline anion exchange resin has a strong affinity for mercury ions in chlorine amalgamation and can treat mercury-containing wastewater from chlor-alkali plants.

3. Phenol-containing wastewater treatment services

Weakly alkaline ion exchange resin treats phenol-containing wastewater with simple equipment, easy operation, and can be used repeatedly after resin regeneration, with low cost and good treatment effect.

Desalination Process Development

The process of producing deionized water with ion exchange resin is to make the raw water pass through the strongly acidic cation exchange resin to remove cations first, and then pass through the strongly alkaline anion exchange resin to remove anions. BOC Sciences can develop and optimize the de-salination process based on the specific water quality and provide customized solutions for the customer.

Water Softening Process Development

In addition to water softening systems that reduce calcium and magnesium ions in water, we can also develop ion exchange processes for removing carbonates from water, as well as reducing the amount of anions and cations in water (i.e., reducing the salt content of water).

Notes in the Operation and Management of Ion Exchange Method

1. Control of organic matter

Certain polymeric organic substances have a high binding force with the fixed ions of the active group of the tree finger, and once combined, it is difficult to carry out regeneration, which in turn affects the regeneration rate and exchange capacity of the resin.

2. Regulation of pH value

Strong acid or strong base ion exchange resins have strong ionization ability of active groups, and the exchange capacity is basically independent of the pH of wastewater, but weak acid tree finger and weak base resins need alkaline and acidic conditions, respectively, in order to exert greater exchange capacity.

If you are interested in our services, or if your project requires a customized treatment solution, please do not hesitate to contact us and our professional team will provide you with customized services.