Sustainable brine treatment “down under”

Designed to reduce on wastewater and chemicals, Lanxess Lewatit MDS TP 208 ion exchangers were being used for efficient brine treatment in Coogee Chemicals’ chloralkali facility.

The Lewatit MDS TP 208 monodisperse ion exchanger from Lanxess has unleashed a new approach to a simplified and sustainable sodium chloride brine purification. In Australia, the system has already demonstrated its capabilities for half a decade at chloralkali producer Coogee Chemicals, absorbing more impurities than its MonoPlus equivalent.

With longer cycle times, the Lewatit MDS TP 208 is able to reduce costs, and the process is said to produce less waste and rinse water, which makes it easier to operate a system for chloralkali production. Hence, the ion exchanger can be relied upon to help meet stringent purity standards, Lanxess said.

Track record in brine treatment
Coogee Chemicals is one of Australia’s largest chloralkali producers and operates three production facilities, all of which work with ion exchange resins from the Lewatit brand. The company’s Lytton site in a suburb of Brisbane has gained an additional cell room to cover demand for products such as sodium hydroxide, sodium hypochlorite and hydrochloric acid for the chemical industry, water treatment, mining and swimming pool industry. The greenfield product was designed to ensure that the regulatory requirements regarding waste reduction could be met reliably, ultimately leading to savings on operational waste and sewage disposal costs.

The amount of waste produced by brine production per year in Lytton is a total of 4,200m3 lower than in a facility which uses ion exchange resins with standard particle sizes. This translates to conserving precious water resources at the same time. The outcome is based on the use of the Lewatit MDS TP 208 finely-dispersed resin, which protects the sensitive electrolysis membranes by removing impurities such as hardness and barium.

The full article is available on the latest edition of Water & Wastewater Asia Jan/Feb 2022 issue. To continue reading, click here.