Pre-Treatment and Post-Treatment Of Desalinated Water
- Seawater Filtration/Screening
This water is passed through several fine mesh screens, then very fine cartridge filters to prevent the membrane from becoming clogged with solids.
Anti-biofouling inhibitors are used to prevent fouling of the membrane surface.
Chlorine dosing in small measures is used to kill bacteria within the unit.
Anti-scaling inhibitors are used to prevent pipes and internal surfaces from becoming coated.
The fresh water now requires treatment to make it safe to use as drinking water, through disinfection by UV, Ozone, or Chemicals.
A UV light beam is directed at the water as it flows through a specialized tube, destroying micro-organisms by interrupting cell division, rendering reproduction of micro-organisms impossible.
Ozone is an oxygen molecule which has had an extra atom added. The ozone is normally added to the water to destroy micro-organisms by oxidization – using that extra atom of oxygen. It acts much faster than chlorine dioxide, being a much stronger disinfectant, but more expensive.
The current most popular and cheapest means of disinfectant for treatment of drinking water is chlorine dioxide, which destroys micro-organisms by cutting off nutrient transport links across the cell walls. .
Chlorine dioxide also destroys the microbes which are responsible for Legionnaires Disease, should the water be used as process water in air condition units.
Website: Lenntech Water Treatment Solutions - Water Treatment and Purification
Website: Advanced Equipment & Service - Pre and Post Treatment (for reverse osmosis and nanofiltration membranes)