TecKnow of the day

A combination selected from the following processes is used for municipal drinking water treatment worldwide:
◾Pre-chlorination for algae control and arresting biological growth
◾Aeration along with pre-chlorination for removal of dissolved iron and manganese
◾Coagulation for flocculation or slow-sand filtration
◾Coagulant aids, also known as polyelectrolytes – to improve coagulation and for thicker floc formation
◾Sedimentation for solids separation that is removal of suspended solids trapped in the floc
◾Filtration to remove particles from water
◾Disinfection for killing bacteria viruses and other pathogens.
Technologies for potable water treatment are well developed, and generalized designs are available that are used by many water utilities (public or private). In addition, a number of private companies provide patented technological solutions. Automation of water and waste-water treatment is common in the developed world. Capital costs, operating costs, available quality monitoring technologies, and locally available skills typically dictate the level of automation adopted. Have a nice day

Disclaimer: As obtained from the Internet