Reverse osmosis (RO) desalination may be used for desalination of brackish and saline waters, but the product water may have low concentrations of hardness and alkalinity, which may corrode infrastructure. Addition of pH, hardness, and alkalinity may be required to meet potable water guidelines. Upflow calcite contactors may be used instead of li...

This study investigates the accuracy of RO membrane manufacturer's performance prediction software with respect to TDS rejection and feed pressure. Six commercial softwares were investigated and compared with real-world performance from facilities located in Texas, Florida, Arizona, Maryland, Kentucky, and Kansas. Preliminary conclusions indicate t...