The quality of water used in industrial applications is important since even trace amounts of dissolved ions can compromise the quality of the final product or cause serious operational issues. Industries that need high-purity water, like electronics and pharmaceutical manufacturers, rely on deionisation plants to treat their water and ensure the highest product quality possible.
There is a growing need for water treatment systems that can eliminate dissolved ionic pollutants to incredibly low concentrations. Deionisation plants are essential to reaching this degree of water purity and for the seamless functioning of many industrial processes.
Blue Reef Water Solutions is a leading South African water treatment company that offers speciality chemicals and outsourced services for a range of industries. We create bespoke chemicals for water treatment to help our customers maintain safety standards and adhere to environmental regulations.
Deionisation for ultra-pure water
Deionisation is sometimes referred to as demineralisation. This is a method of purifying water by eliminating dissolved ionic pollutants. Deionisation concentrates on removing positively charged ions (cations) and negatively charged ions (anions), in contrast to other treatment techniques that mostly target suspended particles or microbes.
These ions can include dissolved salts and minerals, including calcium, magnesium, sodium, chloride, sulphate, and bicarbonate. They can disrupt delicate industrial operations, lead to equipment scaling and corrosion, and degrade the quality of manufactured goods. Ion exchange resins, which are artificial polymer beads with fixed ionic functional groups, are commonly used in the deionisation process.
So what happens on a molecular level during the deionisation process? The dissolved ions are exchanged for hydrogen (H⁺) and hydroxide (OH⁻) ions as they pass through the resins. Positively charged cations are drawn to and bound by negatively charged functional groups found in cation exchange resins, which then release H⁺ ions in their place.
Likewise, positively charged functional groups found in anion exchange resins draw and hold negatively charged anions, releasing OH⁻ ions in return. Pure water is created when the released H⁺ ions mix with the OH⁻ ions. Almost all of the dissolved ions are eliminated from the water stream by this ongoing exchange process, producing extremely pure, deionised water with extremely low conductivity.
Equipment used for deionisation
Usually, the deionisation equipment is made up of one or more pressure vessels holding the ion exchange resins. These containers come in many configurations, including mixed-bed exchangers that hold a combination of both kinds of resins for increased purity, or separate cation and anion exchangers. These resin beds are pumped with the water to be treated.
The resins must be regenerated since their ability to deionise water diminishes as they become saturated with the exchanged ions. Regeneration entails passing a strong base (such as sodium hydroxide) through the anion exchange resin and a strong acid (like hydrochloric acid) through the cation exchange resin.
Deionisation technology supported by chemical knowledge
Although Blue Reef focuses on creating and supplying premium water treatment chemicals, we can also outsource the engineering and manufacturing of water filtration technologies like deionisation plants. Blue Reef works with respectable engineering companies to provide world-class equipment and to give our clients complete solutions, in addition to our chemical expertise.
Our ability to develop specially designed chemicals that improve the efficiency and durability of deionisation processes is our main strength. For example, the quality of the regenerant chemicals used has a significant impact on resin regeneration efficiency. To ensure effective removal of accumulated ions and prolong the life of the costly resin medium, Blue Reef uses its vast research and development skills to generate high-purity acids and bases that are especially optimised for resin regeneration.
We can create pre-treatment chemicals that can reduce the strain on the deionisation plant by understanding the chemical interactions that occur within deionisation systems. For example, anti-scalants can be used to stop the precipitation of salts that are sparingly soluble and could contaminate the resins. By offering these customised chemical solutions, Blue Reef contributes significantly to the best possible performance and effectiveness of deionisation plants.
Our bespoke water treatment chemicals
Serving domestic and foreign businesses in various industries, Blue Reef is a renowned producer and supplier of speciality water treatment chemicals. Our dedication to research and development allows us to produce top-notch solutions that are formulated to each client’s unique requirements.
Our specially created regenerant chemicals and pre-treatment solutions are made to improve the effectiveness and dependability of these vital systems. In addition to deionisation, we provide a wide range of chemicals for process water, boiler water, cooling water, and wastewater treatment applications.
Blue Reef is a reliable partner for businesses looking for efficient and sustainable water treatment solutions. We are committed to offering our clients creative, world-class chemical solutions that support their operations and environmental responsibility. For more information about our water treatment chemicals, please get in touch with us today.
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Blue Reef Water Solutions is a leading water treatment solutions and engineering company that services various companies in food & beverage, agriculture, mining, industrial manufacturing and more. We also offer mineral separation and water treatment for industrial usage and human consumption.
We are a Level 2 B-BBEE manufacturer and supplier and fall under the ownership structure of Deneb Investments Limited. For more information on our products, contact enquiries@bluereef.co.za or phone +27 31 910 7500. Follow us on LinkedIn and Instagram for our latest news and industry insights.
