pump station design and troubleshooting considerations€¦ · discharge cavitation damage caused...
TRANSCRIPT
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2019 Collections Seminar
Pump Station Design and Troubleshooting Considerations
October 16, 2019
Joseph Moore, P.E., DuBois-Cooper Associates, Inc.
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Today’s Sewage
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When did the sewer turn into a Trash Can?
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We need to change the Narrative
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Available Solutions
• Solids handling pumps / Chopper pumps /Grinder pumps / Cutter assemblies / Pre-Rotation
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Available Solutions
• Pump power monitoring / reverse impeller rotation
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Available Solutions
• Trash basket on inlet sewer
• Grinder on inlet sewer
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Available Solutions
• Screen
• Bacteria or Enzymes Treatment
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Available Solutions
• Public Education / Source Control
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• Public Education / Source Control
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Pump Station Design Considerations
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PUMP SELECTION
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PUMP SELECTION
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Pump Curve – ‘Steep Curve’
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Pump Curve – ‘Flat Curve’
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Wet Well Inlet Design / Air Entrainment
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Play Video
Self-PrimingPump
PrimingCycle
Static Head DischargeCheck Valve
Air Handling Valve
Vent to Atmosphere
ARVLine
Suction
Discharge
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SUBMERGENCE / VORTEXING
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Pump Station Troubleshooting
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My Pump Is Not Pumping – Why?
Potential Issues
Troubleshooting Tools
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Cavitation
Implosion Force of 100,000 psi