The RO process in water treatment requires pretreatment to ensure the membranes are clean and effective. Pretreatment includes chemical and mechanical treatments to prevent fouling and scaling. Proper pretreatment also eliminates the need for frequent cleaning. Moreover, it prevents the membranes from being damaged by corrosion, fouling, and corrosion.
The RO process works by forcing pure water through cellophane-like membranes. The reject water is then filtered out to remove impurities. This process is also known as ultra-filtration. Common membrane materials used in RO systems are cellulose acetate, polyamide thin-film composites, and cellulose triacetate. Other materials used in the process include hollow fibres.
The RO process is not suitable for all waters. Water quality varies greatly throughout the world. Some waters contain high concentrations of TDS, while others have low concentrations. Therefore, it is important to know the TDS concentration of your feed water before implementing RO. If it is too high, it will adversely affect the quality of your beverage.
The RO process is very effective at removing dissolved solids from water. The resultant water is called product water. The waste feed stream is called reject stream, and can be recycled through the system.