reverse osmosis membrane

Dow's reverse osmosis membrane for direct drinking water in the United States is a new generation of industrial reverse osmosis membrane with high desalination rate and low energy consumption. It is a relatively excellent product of Dow DuPont. What are its advantages that have made it popular? How should the pre-treatment part of Dow's reverse osmosis membrane for direct drinking water be designed in the United States?

 

Advantages of Dow's reverse osmosis membrane for direct drinking water in the United States

 

Compared with tube, plate, and hollow fiber structures, the American Dow direct drinking water dedicated roll structure has a more uniform water flow distribution, higher pollution resistance, stronger pollution resistance, simpler external pipelines, more convenient cleaning and maintenance, and lower replacement costs for the American Dow direct drinking water dedicated reverse osmosis membrane.

 

2. The inlet channel of the Dow direct drinking water dedicated membrane component in the United States is wider, making the inlet water flow more uniform and pollution less likely to accumulate. Even if there is pollution, it can be cleaned faster and better, with extremely high cleaning efficiency;

 

3. The Dow direct drinking water dedicated membrane components in the United States have a larger number of membrane leaves, which are shorter, making the flux of the membrane surface and reverse osmosis membrane more uniform, greatly reducing pollution rate and improving filtration efficiency;

 

Pretreatment Design of Dow Direct Drinking Water Special Reverse Osmosis Membrane in the United States

 

1. With a complete understanding of the influent type, composition, and physicochemical data, the reasonable pre-treatment of raw water becomes the key to the successful operation of the system. Common pretreatment processes include lime softening or clarification, multi-stage filter treatment (soft water tank, multi-media filter, activated carbon filter, quartz sand filter, security filter, etc.)

 

2. Usually, after security filtration, a sterilization process is added. This process typically involves installing ultraviolet disinfectors (UVs) to kill bacteria and viruses and prevent their potential reproduction.

 

3. Correct analysis of pre-treatment processes and pre-treatment water quality can prevent many problems caused by poor pre-treatment. All filters or softeners in the pre-treatment stage must be lined with rubber or made of corrosion-resistant materials to reduce the iron ion content in the RO influent.

 

The extensive practice of RO system pre-treatment has shown that a relatively conservative design can enable the RO system to operate better and enhance the adaptability of Dow's dedicated RO membrane for direct drinking water in the United States to water quality fluctuations. Although a relatively conservative design will increase initial investment and operating costs, its total operating costs will decrease year by year.

 

5. Investment costs and operating costs should be comprehensively considered, and the higher investment costs brought about by reasonable and conservative design are valuable.

 

The excellent characteristics of Dow reverse osmosis membrane have made it accepted by users around the world. The operation is simple in terms of diaphragm performance, diaphragm use, and cleaning maintenance. It can be said that besides being a bit expensive, Dow reverse osmosis membranes are ahead of other brands in all other aspects.