The wide range of low pressure technology available offers numerous choices when it comes to efficiently meeting the needs of low-pressure applications. Indeed, for most applications, there are several technologies capable of powering a specific installation. The challenge is to closely examine the application needs and select the right technology to ensure a reliable, stable and energy-efficient air supply.

The advent of rotary screw blowers has been heralded as the energy-efficient solution for most aeration and other low-pressure processes. While this technology has the potential to significantly reduce energy costs and greatly improve system reliability, these promises are only achievable when the technology is properly applied.

This whitepaper will examine two common technologies found in wastewater and industrial processes: rotary lobe blowers and rotary screw blowers. In addition to comparing and contrasting the compression and efficiencies inherent with these two designs, this paper will open by defining ideal applications for both types of technology and close with operating case scenarios that illuminate proper application of both blower types.