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Mining Industry Reverse Osmosis System – What You Should Know?

Waterman Engineers Australia

1. What are uses of reverse osmosis in mining industry?
   For drinking water, process water requirement, effluent treatment dewatering, Arsenic removal, tailing storage facility wastewater clean up

2. What maintenance is required for a reverse osmosis system?
   The majority of the filters in your system should be changed at least every three to four months. The number of filters you have depends on the system. Additionally, your RO system needs to be sanitized at least once a year. Membranes to cleaned once in 3 months. As a result, we advise you to do reverse osmosis system maintenance at least four times a year.

3. Reverse Osmosis Water Filtration System how does it work?
   Reverse osmosis is the name of a process that was initially used by submariners to turn seawater into fresh drinking water. The water is driven through a membrane whose outer layer has a high rejection of undesirable substances like fluoride but is very permeable to water! To put it into perspective, if you think of a square foot of membrane as being equivalent to the Pacific Ocean, a pore in a reverse osmosis membrane would then be equivalent to a 5-cent piece. The water is filtered to microscopic levels, and the pore on the membrane is less than 5 Angstrom, which does not mean much to most people.

4. Is the water produced by reverse osmosis process acidic?
   Since the water created by the reverse osmosis process is so pure, it may easily collect carbon dioxide from the air. Although the water’s pH has been shown to be slightly acidic in almost all our tests, we do have alkaline post filters or pH correction chemicals that can rebalance the pH.

5. What is the difference between a TFC membrane and a CTA membrane?
   In Australia, a TFC (Thin Film Composite) membrane is the one that is most frequently used for residential reverse osmosis. It has the advantage of offering a high rejection of pollutants and a remarkable durability if a carbon pre filter is used, but it is particularly vulnerable to damage from chlorine.

Although less frequent, a CTA (Cellulose Tri Acetate) membrane may withstand chlorine.

6. How much Water can I expect from my Reverse Osmosis System?
   Depending on how much capacity we have designed, reverse osmosis membranes produce varying volumes of water each day.