*** This version of Confluence is for testing only and contains a copy of content from June 29th 2026. No changes will be preserved. ***
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Since this design featured a closed top sedimentation tank, a weir, shown below, was used to adjust the water level in the flocculator. Rotating the weir to adjust the height of the part open to the atmosphere allowed us to change the pressure head inside the sedimentation tank, and thus changed the water level of the flocculator.