Low-pressure blowers are categorised as lobe, screw, centrifugal, and multistage blowers, and there are two types of positive displacement blower technologies which are widely used in aeration ...

Screw blowers use internal compression, lobed blowers use external compression. Screw blowers are more efficient, potentially cutting energy use in half. Resources: Atlas Copco, www.atlascopco.com ...

Atlas Copco is so convinced that traditional lobe technology no longer meets the needs of today’s low-carbon economy that it is replacing its roots-type rotary lobe blowers. Screw technology, on ...

Most contractors or end-users within the water and wastewater treatment industry typically use the conventional 'tri-lobe' roots blowers for large volume, low pressure air requirements below 1 bar(g).