One of the side products of the reverse osmosis water treatment process is the accumulation of suspended solids, microorganisms and mineral deposits on the membranes. Since replacing the membranes is expensive and reduces the efficiency of the system, efforts should be made to protect and maintain the membranes.
Here too, dosing pumps play an important role in the RO water purification process by injecting a wide range of sediment inhibitors before and after the water passes through the membrane. Injecting specific amounts of sulfuric acid through dosing pumps at the beginning of the process not only helps to de-alkaline the source water, but also helps to prevent the formation of calcium carbonate deposits. Additional scale inhibitors are usually used at the end of the process, after sodium bisulfite injection, to ensure chlorine removal.
Without the use of fouling inhibitors, the membranes may become saturated with heavy elements, blocking the process and reducing the productivity rate dramatically (in less than 48 hours). For systems with continuous operation, dosing pumps that inject scale inhibitors are critical to process productivity and efficiency.
