ABSTRACT
This chapter introduces post-treatment processes used for desalination water conditioning, followed by a discussion on disinfection. There are various terms used when referring to post-treatment processes including terms such as re-carbonation, remineralization, or potabilization. The simplest post-treatment practice for improving water quality is to blend desalinated water with other water. As a minimum, the blending water is filtered through cartridge filters. The most popular post-treatment process is the direct dosage of limewater. The difference between primary and secondary disinfection has been defined, and the most popular disinfectants, namely elemental chlorine, sodium hypochlorite, calcium hypochlorite, onsite hypochlorite generation, chloramines, chloride dioxide, ozone, and UV radiation have been compared and contrasted. In order to have this concentration of chlorine at the point of use, the residual chlorine concentration as the desalinated water leaves the plant should be no less than 0.5–1 mg/L.
