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Sometimes it is necessary to shut off the flow of water into the sedimentation tank in order to clean it, make repairs or alterations, or to close it off if the plant is producing an excess of treated water. For this purpose, the inlet weir tank is needed to funnel the excess water to the waste system. The functionality of the tank allows for the sedimentation tank to be shut off, while leaving the rest of the components of the plant unaffected.
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The Exit Weir Tank
The exit weir tank acts as a passage to either the waste line or the distribution tank. Depending on the quality of the treated water and the functionality of the plant, one of the two passage ways is plugged to prevent the water from traveling down that pipe. The weir tank attaches to the end of the exit channel and controls works with the exit weir to control the flow to the storage tank and control the overall water level throughout the entire plant.
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