Initial Clear Well Research

A clear well is a reservoir for storage of filter effluent water ("Filtration and Clear Well"). The main objective of clear wells is to provide a buffer between production and adduction. Clear wells can serve other functions in water treatment plants such as:

• compensating for eventual storage capacity deficit
• making a spare water volume for filter backwashing and other uses
• as part of the treatment processes: disinfection, pH, and calcium carbonate stability adjustments.

Additional compartments can be added in order to:

• aerate the water
• store filtered water for backwashing before disinfectant addition
• ensure a contact time for disinfection, before final pH correction

Conventional clear wells involve pumps and sometimes valves, which the operator or a machine would have to open and close. Here is an example: