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- 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.
Figure 1 shows how the clear well fits in a conventional water treatment plant:
Additional compartments can be added in order to:
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Conventional clear wells involve pumps and sometimes valves, which the operator or a machine would have to open and close. Here is an example:
Figure 2: An example of a conventional clear well