Patapsco Wastewater Treatment Plant

Situated on the Patapsco River, the Patapsco Wastewater Treatment Plant (WWTP) is a secondary treatment facility that removes pollutants from incoming wastewater and returns it to the Patapsco River and the Chesapeake Bay.  SK&A technicians completed non-destructive examination (NDE) services for the facility.  The services performed included:

• Condition assessments of sludge blending tanks (1&2)
• Impact echo tests (IE) on the exterior tank walls
• Windsor probe tests on the top and bottom slabs of both tanks as well as the interior tank walls
• Ground penetrating radar (GPR) scans on the top and bottom slabs and on the basement concrete columns to locate reinforcing in both tanks
• Drilled core specimens to determine compressive strengths of the top and bottom slabs at both tanks
• Half cell potential and galvanostatic pulse measurement on the reinforcing in the tank walls
• Petrographic examination on core specimens from both tanks