Water Treatment - Desalination

Water treatment is any method that improves the standard of water to create it additionally acceptable for a particular end-use.

The end use could be drinking, industrial water system, irrigation, watercourse flow maintenance, water recreation, or several alternatives uses, as well as being safely brought to the setting.

Water treatment removes contaminants and undesirable parts or reduces their concentration, so the water becomes suited to the desired requirement.

Those treatments are vital for human health and permit humans to profit from each drinking and irrigation use.

Those treatments are vital for the


Coagulation / Flocculation

During the natural process, liquid aluminium salt (alum) or different chemical compounds are superimposed to untreated (raw) water. It makes the undesired particles to get drown to these chemicals and coagulate. Next, those packs of dirt particles keep accumulating to make larger, heavier particles known as flocs that are easier to get rid of by subsiding or filtration.


As the water and also the floccule particles progress through the treatment method, they come in deposit basins where the water moves slowly, forcing the heaviest floccule particles to settle to the underside. Floccule that collects on the lowest part of the basin is named sludge and is piped to drying lagoons. In Direct Filtration, the deposit step isn’t enclosed, and also the floccule is removed by filtration solely.


A filter is designed to get rid of particles from the water flowing inside it. The filters are fabricated from layers of sand and gravel, and in some cases, crushed anthracite coal. The disinfection is maximised thanks to the filtration which collect the suspended impurities. Those filters are frequently cleaned by backwashing.


Before entering the distribution system, the water is disinfected to make sure that any disease-causing bacterium, viruses, and parasites are destroyed. Chlorine is employed since it’s an effective disinfectant, and residual concentrations may be maintained to protect against potential biological contamination within the water distribution system.

Sludge Drying

Solids which are collected and settled out of the water by deposit and filtration are removed to drying lagoons.

pH Correction

Specific components are added to the filtered water to regulate the pH and stabilize the naturally soft water so as to minimize corrosion within the distribution system, and inside customers’ plumbing.


Water fluoridisation is that the treatment of community water provides for the aim of adjusting the concentration of the free fluoride particle to the optimum level enough to scale back dental caries. Hunter Water is needed to fluoridate water under the government agency fluoridisation of Public Water provides Act 1957.