Surge tanks are used to absorb a rapid flow, such as from a bath or washing machine, and allow it to be dispersed more slowly. They can be as simple as a bare tank, or they may include pumps and filters. The tank must be sized to suit the maximum surge, such as the total water use for a washing machine cycle or the typical bath volume. They can be positioned anywhere convenient that allows water from the sources to flow into them under gravity, but they must also be plumbed back into the sewer for overflow purposes.
Most pumps used in surge tank and similar systems are submersible pumps— they are inside the tank and immersed in the greywater. Pumps can be controlled by float switches, which detect a…
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Renew (Digital) - 1 Issue, 166 / Jan-Mar 2024