Transcription of CHAPTER 5 Clarifiers - TN.gov
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CHAPTER 5 Clarifiers - TN.gov
January 2016 5-1 Design Criteria Ch. 5 CHAPTER 5 Clarifiers General Criteria Purpose Number of Units Arrangements Tank Configurations Flow Distribution Design Loading Primary Clarifiers Intermediate Clarifiers Final Clarifiers Weir Loading Rates Depth/ detention Time Design Details Inlets Submerged Surfaces Weir Troughs Freeboard Sludge and Scum Removal Scum Removal Sludge Removal Sludge Removal Piping Sludge Removal Control Sludge Hopper Protective and Service Facilities Operator Protection Mechanical Maintenance Access Electrical Fixtures and Controls January 2016 5-2 Design Criteria Ch. 5 Operability, Flexibility, and Reliability Scum Removal Overflow Weirs Unit Dewatering Hydraulics Sludge Removal Other Design Considerations January 2016 5-3 Design Criteria Ch. 5 Clarifiers General Criteria Purpose Clarifiers (sedimentation basins, settling tanks) are designed to perform three (3) functions in a treatment scheme: A.
Extended Aeration 400 1000 25 35 Nitrification 400 800 25 35 Pure Oxygen 700 1200 25 40 5.2.4 Weir Loading Rates Weir loadings should not exceed 15,000 gallons per day per linear feet (gpd/li ft). 5.2.5 Depth/Detention Time The sidewater depth …
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