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Dow's new filtration technology saves energy, cuts waste water

Dow Chemical Thailand

Dow Chemical Thailand

To save energy and reduce waste water, Dow Chemical Thailand has introduced an innovative technology called Dow IntegraPac Ultrafiltration skids, a new high-performance water-production and treatment solution.

Dow IntegraPac Ultrafiltration technology is operational at the power, utilities and infrastructure facility at the company's Asia Industrial Estate site in Rayong, treating water for the production process.

Initiated in September, Dow's new water-filtration technology has helped enhance operational efficiency at the facility, while reducing waste and maintenance costs.

With continual growth in a number of industrial factories, Dow technology does it part to minimise impact on the environment by promoting efficient resource management, said Jirasak Singmaneechai, the managing director of US giant Dow Chemical's Thai subsidiary.

Dow firmly embraces the principles of clean technology and pollution prevention, and is committed to solving global water challenges through innovation, he said.

IntegraPac Ultrafiltration technology helps the industrial sector manage water consumption efficiently, he added.

It can be utilised broadly for a variety of applications, including in the production system for municipal water supply, water treatment for industrial processes that require high-purity water, pre-treatment of water for demineralised water production and reverse-osmosis systems, and within resin filtration tank systems.

"Dow strives to develop water-management solutions that promote environmental management, improve efficiency, and elevate industrial standards towards sustainable practises," said Lance Johnson, Asia-Pacific commercial director of Dow Water and Process Solutions. "We are delighted to showcase the Dow IntegraPac Ultrafiltration skids as one of our stand-out innovations."

The skids utilise Dow's proven ultrafiltration membrane technology, which is based on technically advanced hydrophilic PVDF hollow fibre with a uniform pore size of 0.03 microns, he said. This product is highly durable, easy to clean, and is able to maintain high performance under a wide range of feed-water conditions. The pre-engineered and streamlined ultrafiltration skids are uniquely designed to save space, reduce material costs, lower freight costs, and enable faster and cost-effective assembly, he added.

The IntegraPac skids dissociate particulates, contaminants and microorganisms, such as bacteria and virus, from raw water. Pressure is used as a main mechanism to force water feed through specially designed, semipermeable membranes. Particles larger than the membrane's pore size are retained, while water and smaller particles pass through the membrane to improve water quality and purity.

Overall, the system helps lower environmental impact through water-flow design, or dead-end flow, which reduces drain and waste water, and allows for additional energy savings.

The Dow IntegraPac skids use a filtration process operating with a unique "outside-in" hollow fibre configuration, in which the flow of the feed solution is permeated radially from the outside surface, while clean water flows inside the tubular structure of the ultrafiltration module.

The system allows for significantly less blockage, since outside membrane surface areas are comparatively larger than the inside. The product allows for easy cleaning by air scouring, a method employed to compress air to scour the membrane surface.






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