Stage I : Aeration

Ground water supplies commonly contain dissolved gasses and other contaminants which are undesirable in the finished water. Iron may cause taste and odor complaints and foul distribution systems. Excess carbon dioxide causes an unstable water and consumes lime in a softening process. Other dissolved gasses such as radon, hydrogen sulfide, methane and volatile organic compounds (VOCs) are a health and safety concern.

Aeration of ground water is the process of transferring oxygen into the water supply. Oxygen addition to an iron bearing water supply causes the iron to be oxidized which converts it from a soluble state to an insoluble precipitate. Once insoluble the iron may be settled or filtered from the water supply. Aeration also refers to the reduction of unwanted dissolved gasses by spreading the water into a thin film causing the gasses to pass into open air.
The same is generally achieved using a aerator fountain with multiple steps.

Scope of Automation:

1. Measurement of (online flow) quantity of incoming water
2. Analysis of quality of incoming water (Online measurement of PH, Turbidty)

Benefits:

1. Chemical Dosing ratio calculations on basis of in coming water quality and quantity
2. Dosing on basis of final achieved water quality parameters and water storage at purified water storage