HomeMy WebLinkAboutNC0006220_Application_20181120City of Kannapolis WTP Solids Handling Plan
Settled solids and Alum residuals are removed from our Sedimentation basins by way of a Trac-
Vac system. These solids are pumped to a Residuals Lagoon. Any decant water from the lagoon
is sent to the Rocky River WWTP, Cabarrus County (Local Pretreatment No. 203). Solids/Alum
Residuals are generally removed from the lagoon and disposed of, per regulations, when
necessary. Budgeting has been approved to contract out the removal of solids from the lagoon in
2019. These solids will be removed in compliance with state and local regulations.
Backwash water is sent to an Equalization basin and then pumped to a circular Clarifier, which
settles out the solids. A scraper arm pushes solids into a trough and then sends them to the sludge
pumping station where they are pumped to the Solids Lagoon. The decant water is then de -
chlorinated and sent to Bakers Branch of Irish Buffalo Creek.. Flow measurement is calibrated
quarterly by Fortech, Inc, Charlotte, NC.