Pre-Treatment : The seawater undergoes pre-treatment processes to remove suspend solids, sediment, algae, and other larger particles that may clog or foul the RO membranes. Pre-treatment may include processes such as screening, sedimentation, and filtration.
Chemical Sanitizable Reverse Osmosis (CSRO): The pre-treated seawater is pressurize and pass through a series of RO membranes. The RO membranes act as a barrier, allowing water molecules to pass through while rejecting dissolve salts, minerals, and other impurities. The purifie water, known as permeate, passes through the RO membranes, while the concentrate brine, containing the rejected salts and impurities, is discharge.
Post-Treatment: The permeate from the CSRO process may undergo post-treatment processes to adjust the pH, remineralize, and stabilize the water quality before it is used or distribut. Post-treatment processes may include pH adjustment, remineralization, disinfection, and activate carbon filtration.
Chemical Sanitizable Electrodeionization (CSEDI): After the CSRO process, the permeate enters the CSEDI system for further purification. CSEDI employs ion exchange resins and an electric field to continuously remove remaining ions and impurities from the water. The CSEDI system consists of ion exchange resin and electrodes, similar to the principle describe in the EDI system. The electric field promotes ion migration and the removal of ions from the water, resulting in highly purifie water with low levels of dissolved ions.
Product Water: The purifie water collect after the CSEDI process is consider the product water, which has a significantly reduce concentration of dissolve salts, minerals, and other impurities. It is suitable for various applications, including drinking water supply, industrial processes, and irrigation.