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- Primary Treatmentsearch for term
- First steps in wastewater treatment wherein screens and sedimentation tanks are used to remove most materials that float or will settle. [Report to Congress: Impacts and Control of CSOs and SSOs, US (EPA 2004, pg. GL-4])
The practice of removing some portion of the suspended solids and organic matter in a wastewater through EPA Form LCTP 3 9/30/2005 sedimentation. Common usage of this term also includes primary treatment to remove wastewater constituents that may cause maintenance or operational problems in the system (i.e., grit removal, screening for rags and debris, oil and grease removal, etc.).