Pump Station Design and Troubleshooting Considerations€¦ · discharge cavitation Damage caused...

2019 Collections Seminar

Pump Station Design and Troubleshooting Considerations

October 16, 2019

Joseph Moore, P.E., DuBois-Cooper Associates, Inc.

Today’s Sewage

When did the sewer turn into a Trash Can?

We need to change the Narrative

Available Solutions

• Solids handling pumps / Chopper pumps /Grinder pumps / Cutter assemblies / Pre-Rotation

Available Solutions

• Pump power monitoring / reverse impeller rotation

Available Solutions

• Trash basket on inlet sewer

• Grinder on inlet sewer

Available Solutions

• Screen

• Bacteria or Enzymes Treatment

Available Solutions

• Public Education / Source Control

• Public Education / Source Control

Pump Station Design Considerations

PUMP SELECTION

PUMP SELECTION

Pump Curve – ‘Steep Curve’

Pump Curve – ‘Flat Curve’

Wet Well Inlet Design / Air Entrainment

Play Video

Self-PrimingPump

PrimingCycle

Static Head DischargeCheck Valve

Air Handling Valve

Vent to Atmosphere

ARVLine

Suction

Discharge

SUBMERGENCE / VORTEXING

Pump Station Troubleshooting

My Pump Is Not Pumping – Why?

Potential Issues

Troubleshooting Tools

Cavitation

Implosion Force of 100,000 psi

DISCUSSION / QUESTIONS

Joseph Moore313.920.7064jmoore@duboiscooper.com