Saving energy is one of the most important topics of our time.  With the new generation of Wilo-EMU Maxi- and Megaprop submersible mixers, Wilo offers high efficiency in the area of sewage treatment plant technology.  Thanks to new innovative blade geometry and our well-established dimensioning know-how, up to 10% energy savings are possible.

Cost and energy savings potential for slow-running mixers. 

Slow-running mixers are mainly used in the activated-sludge tanks of municipal water treatment systems. Because these units often work in permanent operation over 24 hours/day, specific dimensioning and correct positioning are decisive. The objective of every mixer configuration is to achieve an optimum mixing result with a minimum amount of energy. Besides having the exact knowledge of the basin geometry, fluid properties, amounts of air, etc., the characteristic values of the used unit must also be known, such as the thrust force and input electric power at the duty point, in order to be able to exactly design the mixer for the respective mixing task. The most important characteristic value for judging an efficient mixer is the thrust power ratio.

Thrust power ratio.
The power ratio factor is defined based on the standard ISO 21630. It is a generally valid characteristic value indicating the efficiency of the submersible mixer.  The highest performance factors are achieved with slow-running mixers.  Due to the large propeller diameter and the low propeller speeds, extremely high thrust values are possible with low power consumption.

Wilo-EMU Megaprop.

Our Megaprop range of submersible mixers minimise the energy requirement with highly efficient, three-blade propellers and a two-stage planetary gear.  The low propeller blade load compared to the otherwise common two-bladed mixers benefits with smoother operation and increased service of the wear components.  In addition, thanks to the blades which are are specially curved backwards, a self cleaning effect on the propeller is achieved.  Therefore, even when there are long-fibre constituents in the mixed fluid, high reliability is guaranteed.

Wilo-EMU Megaprop TR 326

Submersible mixer
> Optimum configuration for almost every application
> Low power consumption
> Easy installation by means of a support lowering device

Wilo-EMU Maxiprop TR 226

Optimum thrust values

> Innovative blade geometry

> Special single piece lamianare production

As standard

> Two-stage planetary gear

> Corrosion-resistant, seawater-proof drive shaft