Water & Waste Water Treatment

Water Treatment

The filtration process for drinking water uses airflow to air-scour filter beds, clean membranes or supply air to ozone producers. Blowers are also used for aeration (fine or coarse bubble) in fish farming, ponds and commercial aquariums.

Rotary lobe blowers are oil free and designed for high volume medium pressures which makes them ideal for treating water.

The selection of a blower package style will be determined by the application and installation site. Popular package styles for water treatment are listed on the right hand menu, you can follow these links for more information.

Waste Water Treatment

Waste water must be cleansed of any impurities before being discharged into streams, rivers, lakes or oceans. The treatment of wastewater relies on microorganisms and air agitation is often used to accomplish this. Municipal raw sewage or industrial organic waste are aerated to feed microorganisms with the dissolved oxygen necessary to digest waste byproducts.

The blower supplies air, feeding oxygen to the bacteria which must degrade the organic matter. The blower must overcome the resistance of the water height and diffuser/piping losses. As the effluent disolved oxygen level changes, it is necessary to inject oxygen at varying rates to optimize the oxygen needs of the bacteria. You must have the ability to vary the flow while keeping a constant pressure.

Digester gas is produced through the natural breakdown of organic material or accelerated breakdown in waste water treatment plants. The gas primarily composed of methane but containing traces of hydrogen sulfide (H2S)

The gas can be flared, re-circulated for a process, or used as a fuel to power generators and other internal combustion engine driven machines. This gas is both explosive and corrosive and blower packages must be designed to handle these charicteristics.

Another blower application in waste water treatment is grit chamber aeration. As flow into the chamber varies aeration helps control circulation in the unit. Proper circulation keeps organics in suspension and allows grit to settle to the tank floor regaurdless of any variation in flow capacity.