What is the primary function of reverse osmosis in wastewater treatment?

The primary function of reverse osmosis in wastewater treatment is to remove contaminants via membrane filtration. This process utilizes a semi-permeable membrane to separate dissolved solids, organic compounds, and other contaminants from the water. By applying pressure, water molecules can pass through the membrane while larger particles and impurities are retained and removed, resulting in purified water. This makes reverse osmosis a critical technology for producing high-quality effluent and for the reclamation of wastewater, making it suitable for reuse or discharge in an environmentally responsible manner.

In contrast, processes such as adding chemicals for treatment typically involve coagulation or disinfection methods rather than filtration. Aeration is focused on introducing air to promote biological processes, while providing supplementary nutrients usually pertains to biological treatment methods where specific nutrients are added to enhance microbial activity. Thus, the specific function of reverse osmosis is distinct and essential for effective contaminant removal in wastewater treatment systems.