Lecturer:

Pumping Station

Wastewater Engineering

ECW 542

DA/RH

Tower 1/ Aras , Room

Ext.

Learning Outcome

At the end of Week 4 students should be able to

- describe sewage pumping systems

- apply knowledge related to sewage pumpingsystems

PUMPING STATION

Required to raise sewage into otherdownstream process units.

Classified as wet well & dry well.

Wet well stations employ either suspendedor submersible pumps.

Dry well stations employ either dry well orself-priming centrifugal pumps.

Common terms :-i. Head.ii. Capacity discharge or flow rate.iii. Work power and efficiency.

Acceptable pump systems :-i. Centrifugal.ii. Screw.Iii. Screw Centrifugal.

PUMPING STATION

WET WELL

To store wastewater.Suction channel to avoid dead zones and to

prevent solids and scum accumulation.Hopper bottom.Flushing of grit and solids.Start and stop levels.Start and stop level for duty and assist

pumps.

Benching to minimize deposition of solidmatter.

Self cleansing pumps shall be provided.

Access.

All equipment & electrical works must beof explosion-proof and spark proof.

WET WELL

DRY WELL

Used to house pumps.

To provide gutter to convey seepage,pump drainage and floor was down waterto a sump.

Intermediate floor for deep pumpingstation.

Sufficient working spaces.

DRY WELL

Used to house pumps.

To provide gutter to convey seepage,pump drainage and floor was down waterto a sump.

Intermediate floor for deep pumpingstation.

Sufficient working spaces.

Typical Details of Dry Well Pump Station

PUMPING STATIONINSTRUMENTATION

Automatic Controls.

Manual Controls.

Alarms.

Control Panel Design.

Flow measurement.

Heating and Ventilation.

THANK YOU