Osmosis is a process of movement of solvents through a semi-permeable membrane from a region of lower solute concentration to higher solute concentration. On the contrary, diffusion does not require a semi-permeable membrane to occur and the molecules move from a region of higher concentration to lower concentration. Reverse osmosis as used in water treatment systems is a purification process through which water molecules pass through a porous membrane while leaving other molecules, presumably of contaminants, behind.
Through the process of acid cleaning and alkali cleaning, CIP remove macromolecular colloids, microorganisms, organic matter, inorganic substances and other fouling that have fouled on the surface of the RO membrane module during the long-term operation, to ensure the normal operation of the membrane system and extend the service life of the membrane module. In addition, the pretreatment of RO is also an important step to protect RO membrane modules and extend their service life. In general, when the water production rate or desalination rate of the RO system is reduced to 10-15%, it is necessary to perform CIP treatment on the RO membrane module.
These products are a safe and highly effective liquid antiscalant/antifoulant developed to control scale precipitates and reduce particulate fouling within membrane separation systems. Use of this product provides longer run times and extended element life resulting in reduced operating and capital costs. The product has shown excellent results in membrane separation processes including RO, NF and EDR.
De-chlorine is a very cost-effective product used to remove free and combined chlorine from reverse osmosis and ultrafiltration feedwaters. This liquid product is a high-quality solution of sodium bisulfite. Feedwaters to membrane systems often contain chlorine to treat and prevent microbiological growth prior to the membrane separation process. This chlorine, however, can irreversibly damage thin film composite membranes by oxidizing the membrane surface.