Submersible Aerators And Mixers
Submersible Mixer II
Second submersible mixer build for larger or deeper tanks.
View specifications →Submersible Aerators And Mixers
Submersible Mixer
A mechanical device for mixing sludge tanks and other liquid volumes, used throughout sewage treatment where movement matters and air does not.
Overview
What This Pump Does
The submersible mixer is a mechanical device used to mix sludge tanks and other liquid volumes. It is common in sewage treatment, where keeping solids in suspension is a separate requirement from adding oxygen.
Because it only moves the contents, it is the right machine for anoxic zones, balancing tanks and sludge holding tanks, where aeration would disturb the process or waste energy.
- Mechanical mixing device for submerged installation
- Used in sludge tanks and other liquid volumes
- Applied across sewage treatment stages
- Propeller drive assembly for continuous duty
Key Benefits
What A Mixer Does That An Aerator Should Not
Movement Without Air
Anoxic and balancing duties need the contents moving but not aerated. A mixer does exactly that.
Keeps Solids In Suspension
Preventing settlement protects working volume and avoids odour from stagnant deposits.
Installed In The Tank
Submerged mounting keeps the machine out of the way and avoids surface splashing.
Works With Aeration Equipment
Mixers and aerators are often used together, each doing the job it is suited to.
Application Scenarios
Where It Is Installed
Sludge Holding Tanks
Keeping thickened sludge homogeneous before transfer or dewatering.
Anoxic Zones
Maintaining movement in stages where oxygen must stay out of the process.
Balancing And Buffer Tanks
Preventing settlement where flow and load vary through the day.
Who It Is For
- Municipal treatment works
- Industrial effluent plants
- Biogas plants with digestate storage
- Consultants specifying anoxic zone equipment
Problems It Solves
Solids settle and reduce capacity
Continuous movement keeps material in suspension so the tank keeps its working volume.
Aerating where air is unwanted
Using an aerator for mixing in an anoxic zone upsets the process and wastes energy.
Odour from stagnant corners
Moving the whole volume prevents the stagnant pockets that generate odour.
Technical Features
How It Is Built
- Mechanical mixing device for submerged installation
- Used in sludge tanks and other liquid volumes
- Applied across sewage treatment stages
- Propeller drive assembly for continuous duty
- Mounting arrangement to suit tank geometry
- Works alongside aeration equipment in the same basin
Specifications
Technical Data
The table below is from the original product page. Mixer selection depends on tank volume, geometry and solids content.
- Mechanical mixing device for submerged installation
- Used in sludge tanks and other liquid volumes
- Applied across sewage treatment stages
- Propeller drive assembly for continuous duty
- Mounting arrangement to suit tank geometry
- Works alongside aeration equipment in the same basin
| Model | Depth (meter) | Power (Kw) | Speed (rpm) | Air suction (Nm3/h) | O2 Input (KgO2/h) | Main convection | Sub convection |
|---|---|---|---|---|---|---|---|
| SKCB7.5 | 2 | 0.75 | 1450 | 10 | 0.37 | 1.2 | 2 |
| SKCB15 | 2 | 1.5 | 1450 | 22 | 1 | 1.5 | 2.5 |
| SKCB22 | 3 | 2.2 | 1450 | 35 | 2.75 | 2.5 | 5 |
| SKCB30 | 3 | 3 | 1450 | 50 | 3.8 | 2.5 | 5 |
| SKCB40 | 3 | 4 | 1450 | 75 | 5.3 | 3 | 6 |
| SKCB55 | 3 | 5.5 | 1450 | 85 | 5.5-7.7 | 3.5 | 7 |
| SKCB75 | 3 | 7.5 | 1450 | 100 | 8.2 | 4.5 | 9 |
| SKCB110 | 4 | 11 | 1450 | 160 | 13 | 5 | 10 |
| SKCB150 | 5 | 15 | 1450 | 200 | 17 | 5.5 | 11 |
| SKCB185 | 5.5 | 18.5 | 1450 | 260 | 19 | 6 | 12 |
| SKCB220 | 6 | 22 | 1450 | 320 | 24 | 6 | 12 |
Materials And Process
What Goes Into Every Unit
Materials
- Stainless propeller and shaft components
- Submersible motor assembly
- Mounting bracket and guide arrangement
Manufacturing And Assembly
- Propeller machining and balancing
- Submersible motor assembly and sealing
- Run test before packing
- Documentation with the order
Quality Control
- Propeller balance checked
- Seal integrity verified for submerged duty
- Run test and record before dispatch
Customization Options
- Propeller size and speed for the tank
- Guide rail or bracket mounting
- Motor rating and cable length
- Orientation for flow pattern
Compared With Other Options
| Submersible aerator | An aerator adds oxygen and mixes. A mixer only mixes, which is what anoxic zones and balancing tanks require. |
|---|---|
| Top entry agitator | A top entry agitator needs a bridge or cover structure. A submersible mixer mounts inside the tank. |
Use Guide
Positioning A Submersible Mixer
Plan The Flow Pattern
Position and angle decide whether the whole volume moves or only part of it.
Check Minimum Level
Confirm the mixer stays submerged at the lowest operating level.
Fit Guide Rails
A guide rail and lifting arrangement allows service without emptying the tank.
Inspect The Propeller
Check for rag build up at routine intervals, especially on unscreened liquid.
Answers
Submersible Mixer FAQ
Does the mixer add oxygen?
No. It only moves the tank contents, which is what anoxic zones and balancing tanks need.
Where is it used?
Sludge tanks and other liquid volumes in sewage treatment.
Can it be serviced without draining the tank?
Yes where a guide rail and lifting arrangement is fitted, which should be specified with the order.
How many mixers does a tank need?
It depends on volume, geometry and solids. Send tank dimensions and the contents for a recommendation.
Can it work alongside aerators?
Yes, mixers and aerators are commonly used in the same plant, each on the duty it suits.
Related Equipment
Related Equipment From The Same Line
Mixing and aeration equipment for the same basins.
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The rubber lobe pump specified for sludge handling duty.
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Industries Guides And Solutions
Need Submersible Mixer Sized For Your Duty Point
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