Centrifugal Blowers play an indispensable role in keeping the United State’s water supply pure. Centrifugal multi-stage blowers are used at municipal and industrial water and wastewater treatment plants. These quiet, high-quality blowers are designed and constructed to withstand continuous duty and to maintain constant pressure with clean, reduced-noise air delivery.
Centrifugal Technology is a constant pressure variable flow aerodynamic compression of air or gas where flow is proportional to power consumption. The centrifugal technology achieves elevated pressure by adding kinetic-energy/velocity to a continuous flow of air through the rotor or impeller. This kinetic energy is then converted to an increase in static pressure by slowing the flow through a diffuser. This technology is used in many different blower and compressor products such as: centrifugal compressors and fans, as well as centrifugal multistage blowers to name a few.
Centrifugal blower equipment has many critical tasks. During aerobic digestion, centrifugal blowers are used to introduce precise quantities of oxygen into water tanks to allow bacteria to decompose any organic matter. In the secondary treatment phase, centrifugal blowers help keep the microorganisms suspended so they don’t settle out. As the bubbles rise through the sludge, the air fed into the aeration tanks increases DO. Centrifugal blowers offer the same “suspension” function in the grit chamber to help keep organic particles from settling, as well as in primary sedimentation tanks (but independent of the water flow rate). Some larger plants use blowers to aerate the treated water during “post aeration” to add oxygen to the water before releasing the effluent into the local waterways.
- Flow is widely variable through the use of a regulation butterfly valve at the inlet
- Performance is optimized
- Energy consumption minimized
- Maintenance costs are kept low
- Controlled by inlet throttling (to modulate flow)
Main Components in Centrifugal Blowers
- Baffle rings
- Balance Piston
- Bearing Housing
- Casing (with internal and/or external drains)
- Cooling fan
Centrifugal Blower Applications
- Fine bubble aeration
- Coarse bubble aeration
- Digester gas recovery
- Grit chamber aeration
- Filter backwash systems