Pump application guide
Pumps for Wastewater, Sewage and Sludge Transfer
Compare submersible sewage, drainage, progressive cavity, diaphragm and sludge plunger pumps using solids, viscosity, installation and pressure requirements.
Who this is for
Application context
Municipal and industrial wastewater systems, pits, sumps, drainage sites, sludge handling and processes containing fibers or suspended solids.
Before model selection
Information to collect
- Liquid description, pH, temperature and corrosiveness
- Maximum solids size, concentration, shape and fiber content
- Required flow, total dynamic head or discharge pressure
- Pit depth, minimum water level and installation arrangement
- Viscosity, abrasiveness, cleaning needs and acceptable pulsation
Candidate pump families
Ranges to investigate.
These are starting points, not model recommendations. Confirm the exact duty, materials and current curve.
WQ sewage and WQDX drainage pumps
For submerged wastewater, sump, pit, drainage and dewatering arrangements after solids limits are confirmed.
Explore range →JBCN progressive cavity pumps
For controlled transfer of viscous process liquids and some sludge duties after rotor and stator review.
Explore range →QBY and DBY diaphragm pumps
For compatible process liquids and solids-bearing fluids where air or electric diaphragm drive is suitable.
Explore range →High-pressure sludge plunger pumps
For thick sludge and high-pressure duties such as filter-press feeding, subject to model confirmation.
Explore range →Engineering approach
How to narrow the selection.
Characterize the solids
A photograph or broad term such as sewage is not enough. Record the largest solids, concentration, fibers, abrasiveness and whether material settles, floats or changes viscosity over time.
Choose the installation concept
Decide whether the pump is submerged, dry-installed, vertical in a sump or mounted beside a process. Access for lifting, cleaning and maintenance can determine the practical pump arrangement.
Verify the curve and passage
Confirm flow and head at the duty point together with the exact model's solids passage, motor rating, materials and operating limits. Do not infer passage size from an image.
Avoid these errors
Common selection mistakes.
- Using clean-water curves without correction
- Assuming every sewage pump passes the same solids
- Ignoring ragging and long fibers
- Selecting a sludge pump without viscosity and pressure data