Excelling high efficiency
 

The special hydraulic of the BSK^® -Turbine makes it possible: ≥ 2,5 kg O₂/kWh.
Advantage: significant savings in operating costs (more than 60% of the energy demand of a wastewater treatment plant is spent on the aeration of the biological stages).

Exemplary good aeration
and circulation

The special hydraulic design according to the “Francis-concept” allows an optimized aeration. Moreover, the circulation rate is unique, even in deep tanks.

Made of stainless steel
 

No material is better than stainless steel in the waste water: No corrosion and almost unlimited lifetime. Free choice of alloy is possible (AISI 304L, 316L etc.).

Durable construction
 

365 operating days per year and maximum daily services require extremely robust components.
BSK^® drives provide the answer:
Service factor ≥ 2,8 and oversized bearing technology.

No loss of efficiency
 

Design-immanent, permanently constant power,
high alpha (α) factor ≥ 0,9, no loss of efficiency in oxygen transfer compared to fine-bubble aeration.

No Pipes
no Blowers

No construction structures for compressed air units, no formation of condensation, no sludge deposits, minimal installation effort.

Easy Maintenance
 

No components which need maintenance are under water. The only maintenance is an oil change every 3 - 4 years (full synthetic oil). In case of repair: Easy disassembly without emptying the tanks.

Low Spray Height
 

Low spray height, practically no aerosol formation, splashguard covers can be omitted.

Sizes

11 different standard sizes available: diameters from 900 up to 3,000 mm.
(Other dimensions can be created depending on the requirements.)

Material

Manufacturing is possible in various alloys of stainless steel:
- AISI 304L (Edelstahl V2A)
- AISI 316L (Edelstahl V4A)
(Special steels are possible if necessary)

Drive system

Motor power 5,5 kW – 130 kW
Standard efficiency class: IE3,
on request: IE4
High-performance gear with hollow shaft or flanged shaft

Operating

Clockwise or anticlockwise turbines available.
Variable speed for mixing (denitrification) and aeration (nitrification)

Installation

Mounting on floating systems (self-adjustable in height according to changeable water level e. g. in SB-reactors) or fixed installation on steel or concrete bridges (at constant level)

Oxygen input

Up to 270 kgO₂/h