Background of Industrial Reverse Osmosis System

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The use of reverse osmosis systems in the water conditioning industry continues to grow, and Aema does not remain oblivious to this trend.
 
As more systems are put into service, it is important that both water quality professionals and future users expand their understanding of this technology. That is why we have decided to publish this basic manual of reverse osmosis in the industry.
 
This information can be applied in general to all industrial reverse osmosis system, although in some cases there may be cases in which we find more problematic waters with their special characteristics such as containing other impurities, such as high levels of organic compounds, iron, manganese, Hydrogen sulfide and other constituents that may affect the performance and life of the RO membrane, but are not discussed in this article.

 
RO (Reverse Osmosis) or Reverse Osmosis is a process in which water is fed to a semipermeable membrane. On the surface of the membrane, water separates from its almost total content of dissolved minerals. At this point in the process, purified water, as it passes through the membrane, is captured and converted to permeated water (also known as produced water) and rejection or concentrated waters are sent to the drainage and even part of it, For design reasons, they can be recirculated to the suction of the high pressure pump.
 
Total dissolved solids (TDS) that are often found in water consist mainly of calcium, magnesium, sodium and potassium cations, along with chloride, sulfate, silicate and bicarbonate anions. Small amounts of organic material, earth, clay, silt, mineral particles and microbes are also present in the water, along with multiple cations and anions. These trace elements can be iron, strontium, barium, nitrate, lead, copper, fluoride, manganese … and the list goes on. A thorough water analysis is the best start for any RO project and also serves as a useful tool to diagnose problems with systems that are currently in operation. It helps to ensure that pretreatment is sized and selected correctly and helps to establish guidelines for permeate rates and overall system recovery.

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