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Pumps tanks mixers and sanitary fittings built in Wenzhou since 2002
Submersible mixer with stainless propeller and motor on a guide rail bracket

Industry Application

Aerators Mixers And Sludge Pumps For Treatment Works

Sewage plant equipment fails for two reasons: it blocks, or it cannot put enough oxygen into the basin. The aerators, mixers and lobe pumps on this page are built for exactly those two jobs.

What Goes Wrong On This Duty

Pumps block on rag and fibre

Screened sewage still carries rag, hair and fibre. A rubber lobe pump passes it because the flow path is short and wide and the rotors do not touch.

Oxygen transfer is too low

Coarse bubbles rise and burst without transferring much oxygen. Fine dispersion at around 100 microns puts far more surface area into the same volume of air.

Solids settle in the corners of the basin

Dead zones reduce working volume and produce odour. Submersible mixers keep the whole basin moving.

What Buyers Ask For

  • Equipment that can be lifted for service without draining the basin
  • Pumps that run dry occasionally without destroying themselves
  • Aeration that does not need a blower house and an air main
  • Wear parts that a site team can change in place
  • Materials that survive grit and sulphide

Recommended Equipment

Aeration Mixing And Sludge Handling In One Range

Aerators and mixers sit in the basin. Lobe and progressing cavity pumps move what settles out of it.

SKCB submersible aerator with star type impeller and air pipe

Submersible Aerators And Mixers

SKCB Submersible Aerator

Self priming aerator combining pump blower and gas liquid mixer.

View specifications →
Immersible aerator unit mounted on a stand for testing

Submersible Aerators And Mixers

Immersible Aerator

Self priming aerator for oxygen transfer and mixing in basins.

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Jet aerator unit with stainless nozzle and submersible motor

Submersible Aerators And Mixers

Jet Aerator

Jet type aerator driving a mixed air and water stream through the basin.

View specifications →
Submersible mixer with stainless propeller and motor on a bracket

Submersible Aerators And Mixers

Submersible Mixer

Mechanical mixer for sludge tanks and other liquid volumes.

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Submersible mixer unit with propeller and drive for larger tanks

Submersible Aerators And Mixers

Submersible Mixer II

Second submersible mixer build for larger or deeper tanks.

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Sludge lobe pump body with inspection cover and lifting eyes

Rubber Lobe Pumps

Sludge Lobe Pump

The rubber lobe pump specified for sludge handling duty.

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KRL rubber lobe pump with gearbox and motor on a base

Rubber Lobe Pumps

KRL Rubber Lobe Pump

Rubber covered lobe rotors for liquid with lumps fibre and gas.

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Typical Scenarios

Where The Equipment Sits

Activated Sludge Basins

Oxygen supply and mixing in the aeration tank, including pre-aeration and sludge stabilisation stages.

Sludge Transfer And Dewatering Feed

Moving thickened sludge to a belt press or centrifuge at a steady, low pulsation rate.

Balancing And Anoxic Zones

Mixing without aeration, where oxygen would work against the process.

How We Work

How A Treatment Works Order Runs

Basin Data

Volume, depth, shape and organic load. That is what sizes aeration, not the pump catalogue.

Equipment Layout

Number of units and their placement, fixed or floating, with lifting and guide rail arrangements.

Build And Test

Units are assembled and tested at the works, with the motor and cable arrangement matched to the site supply.

Install And Support

Installation guidance, commissioning and spares held against the model number.

Delivery

What You Get With The Order

  • Aerators supplied with the air pipe arrangement and mounting
  • Fixed floor mounting or float mounting to suit basin depth
  • Lobe pump wear parts replaceable in place without moving pipework
  • Operation and maintenance manual with service intervals
  • Spares for rotors, seals, wear plates and impellers
Submersible aerator unit with star type impeller and air pipe
The star type impeller and stator draw air down the pipe and disperse it into the basin.

Answers

Wastewater And Sewage FAQ

How many aerators does a basin need?

It follows the oxygen demand and the basin geometry. Send volume, depth and load in kilograms of BOD per day and we will propose a number and a layout.

Can the aerator be serviced without draining the tank?

Yes, where a guide rail and lifting arrangement is fitted. Specify it with the order because retrofitting it later means working in a full basin.

Which pump handles dewatered sludge?

Rubber lobe pumps for sludge with rag and fibre, progressing cavity pumps where viscosity is high and flow must be steady.

Do the pumps run in both directions?

The rubber lobe pump is reversible without restriction, which is how blockages are cleared without opening the line.

What suction lift is possible?

The lobe and progressing cavity pumps are self priming to a maximum of 8.5 metres, subject to the suction line layout.

Send The Basin Volume Depth And Load

Those three numbers size the aeration. Add the sludge dry solids and we will size the pump with it.