Membranes are economical answer to high turbidity, iron concentrate and total suspended solids

In order to combat high turbidity, elevated iron concentration and a large amount of total suspended solids, the GuanYinShan cogeneration facility has chosen DOW^TM Ultrafiltration membranes to pretreat feed water for the reverse osmosis process.

The 49 megawatt (MW) co-gen facility handles the generation, installation and repair of electrical services for the JiangShu province in China. Since 2007, the DOW membranes have successfully produced desirable reverse osmosis feed water without the need for other pretreatment processes. The single pretreatment results in an average product water turbidity of 0.12 Nephelometric Turbidity Unit (NTU) and silt density index (SDI) of less than three for the municipality.

“The GuanYinShan facility faces huge challenges in producing boiler feed water while generating reliable and stable energy for the growing community,” said Christina Fang, area commercial development manager, Dow Water Solutions. “Using the DOW Ultrafiltration membranes as a single pretreatment method facilitates stable reverse osmosis membrane performance resulting in an economical and reliable water treatment system for this ground water source.”

This DOW Ultrafiltration solution consists of SFP-2860 modules. To learn more about DOW Ultrafiltration, or view this case study in its entirety, visit www.dowwatersolutions.com.

About Dow Water Solutions

Dow Water Solutions is a performance-based business unit comprised of world-class brands and enabling component technologies designed to advance the science of water purification around the world, including seawater desalination, contaminant removal and water reuse. With more than 1,000 employees worldwide, the business maintains five production facilities globally to manufacture, market and sell reverse osmosis membranes, ion exchange resins, titanium-based arsenic removal media, ultrafiltration, and electrodeionization components. Dow Water Solutions also manufactures, markets and sells premier water purification systems in China.

About Dow

With annual sales of $54 billion and 46,000 employees worldwide, Dow is a diversified chemical company that combines the power of science and technology with the “Human Element” to constantly improve what is essential to human progress. The Company delivers a broad range of products and services to customers in around 160 countries, connecting chemistry and innovation with the principles of sustainability to help provide everything from fresh water, food and pharmaceuticals to paints, packaging and personal care products. References to “Dow” or the “Company” mean The Dow Chemical Company and its consolidated subsidiaries unless otherwise expressly noted.