The low pressure experts

For wastewater treatment systems in either communal or industrial treatment plants, bioreactors or flotation plants, operators seeking a reliable supply of compressed air with differential pressures up to 1100 millibar and a flow rate from 5 to 160 m³/min need look no further than Kaeser’s rotary screw blowers from the CBS to HBS series, featuring a power output of 7.5 to 250 kW. Up to 35% more efficient than conventional rotary lobe blowers, they also offer significant advantages in terms of energy efficiency and blower air availability over many other types of blower in this power range. Kaeser rotary screw blowers particularly excel when operating at 100% duty cycles, where they are especially well suited to generating process air for the purposes of aeration in water treatment, flotation and fluidisation processes and in bioreactors.

The latest highlights from this model series are the GBS and the FBS, with a flow rate from 18 to 72 m³/min, pressure differentials from 0.3 to 1.1 bar and motor power outputs from 45 to 110 kW, and the CBS, featuring a power range from 75 to 160 kW, flow rate from 22 to 104 m³/min and differential pressures up to 1100 mbar.

High-efficiency motors

Kaeser’s latest generation of variable-speed rotary screw blowers are equipped as standard with synchronous reluctance motors – highly efficient drive motors that are capable of significantly boosting the energy efficiency levels of units equipped with a frequency converter. The special rotor design used in this new generation of motors makes them extremely robust and durable. Furthermore, all Kaeser blowers are delivered as complete, turnkey machines including a Sigma Control 2 smart controller, which makes them particularly well suited to Water 4.0 applications.

Turbo blowers now available from Kaeser

Even more power comes with the PillAerator turbo blowers, suitable for flow rates of 50 to 267 m³/min and differential pressures up to 1.3 bar. These extremely energy-efficient machines stand out for their intelligent design, whereby smart magnetic bearings operate completely wear-free, proactively controlling the position of the rotors. Furthermore, they are completely safeguarded against any potential power failure. As the bearings operate completely independently of speed, the machine is always ready for restarts, whilst the use of a cooling concept for core components that does not rely on ambient air ensures particularly long-lasting and trouble-free operation.

Portable powerhouse

Powerful, lightweight, quiet, versatile and easy to transport: these are the principle characteristics of the most compact member in the Mobilair family of portable rotary screw compressors, now available as an electrically powered version. The additional support frame with compressed air aftercooler and filter combination now brings the option of technically oil-free compressed air to the 1 m³ range – the M13E is as flexible as a Swiss Army knife and an indispensable assistant when it comes to applications such as pipe rehabilitation.

Stand: Hall A1, 142/143