Tank Mixing

A BETTER MIX - WITH ROTAMIX AND STM SYSTEMS

Tank mixing is an important requirement in many waste water and process applications and the Vaughan Rotamix System and STM
(Small Tank Mixing) are acknowledged as the most cost-effective methods of mechanical mixing available today.

Take a look at the key benefits:

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INNOVATIVE, SMALL TANK
MIXING SYSTEM CUTS COSTS

‘Rag wrapping’ problems at sewage treatment sites can cause expensive, time-consuming maintenance.

System Mix, (P&M Pumps mixing system design and supply company), can help you overcome these problems.

Take a look at our standard STM (Small Tank Mixing) system technoloygy.

Click here to view our video on the SE-STM Mixing System

RECENTLY COMPLETED TANK MIXING INSTALLATIONS

billing blend buffer tank

THE VAUGHAN PUMP

The Vaughan ‘Chopper’ pump at the heart of every mixing system.

A LIQUOR BUFFER TANK

A completed tank and mixing system.

The 20m diameter liquor tank is roofed as they are able to harvest/recover gas from each covered tank at Billing due to our mixing systems.



The Concept

The Rotamix system incorporates several basic principles of physics and hydraulics, including uniform field of flow, vortical field of flow and surface contact. This combination of this unique mixing system optimises solids contact due to the homogeneous state.

Dual-Zone Mixing

The dual-zone mixing pattern is a combination of both uniform and vortical fields of flow. In a uniform field of flow, the entire contents rotates as a solid unit with the highest velocity at the outside. In a vortical field of flow, fluid velocities are the greatest at the centre, which creates a vertical-axis vortex. The Rotamix system combines both uniform rotation and a vertical vortex, creating unique dual-rotational zones. With dual-zone mixing, average velocities are higher and more steady, so solids are prevented from settling in the centre.


Induced Flow

High velocity nozzles also increase the effective mixing volume by inducing entrained fluid, significantly increasing the overall mixing effect. These high velocity nozzles induce flow over a longer distance, thus generating an overall effect over a larger volume.

Surface Contact

Finally, the Vaughan Chopper Pump not only eliminates nozzle clogging, but also optimises surface contact by constantly reducing solids size and so increases total surface area.