Wastewater treatment

Howden blowers and compressors providing a reliable source of air for aeration in the Wastewater Treatment process

Wastewater treatment is required to manage effluent from municipal sewage systems and from many industrial processes where liquid organic effluents are produced as a by-product.

The demand for treatment plants is growing quickly in many countries as waste volumes increase with population growth and the focus on environmentally sensitive disposal intensifies.

With aeration accounting for over 60% of power requirements, it is essential to make sure you get an efficient solution. Our rotary blower and turbo compressor technology has been reliably and efficiently serving wastewater applications for many decades and continues to be enhanced with efficiency and operational control in mind.

Comprehensive, Customized Services

Our highly efficient turbo compressor design, fitted with variable inlet guide vanes and variable vane diffuser system offers a unique high performance across the entire duty range and not just at full load duty conditions. We have an unrivalled turbo compressor range covering ten frame sizes with volumes from 4,000 to 140,000 m3/h, with the option to install a unified control system that can optimise part-load operation across several blowers.

Bespoke Packages

Howden provides stand alone or bundled aeration systems and performance certification. We have technical knowledge beyond the product and offer instrumentation and control systems which give you state-of the-art real-time monitoring of water condition.

In-House Expertise

We offer complete aeration system solutions to water treatment industries. When you select Howden, you get consistent and reliable results every time. The combination of energy efficiency, improved process performance, equipment robustness, and system ease of use will deliver a low total cost of ownership.

Applications and Processes

Grit chamber aeration

Removing grit from wastewater is an initial treatment stage and aerated chambers can be used to separate out and settle the grit at the bottom of the chamber. Air is supplied to the chamber by blowers.

Products: EasyAir Rotary, Roots Rotary Lobe Blower


Diffused aeration

Biological wastewater treatment using diffused aeration requires the injection of air into the wastewater to oxidize organics and aid the bio-degradation of pollutants. Howden has a wide range of blower and compressor technologies available for every capacity, flow rate and efficiency requirement.

Products: EasyAir Rotary, Roots Rotary Lobe Blower, EasyAir Turbo, KA Series


Membrane Air Scouring/Backwash

Membrane BioReactor (MBR) systems are used in advanced wastewater treatment plant. The membranes are scoured by air supplied by blowers to reduce fouling.

Products: EasyAir Rotary, Roots Rotary Lobe Blower


Sludge Drying

Sewage sludge can be combusted on-site, shipped elsewhere for combustion or used as agricultural fertilizer. The larger plants and those in metropolitan areas opt for on-site incineration. Fluid bed combustors utilize blowers.

Products: Roots Rotary Lobe Blower


The wastewater industry relies purely on performance

Access our waste water documentation

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Waste water process diagram

If you would like to submit an enquiry please get in touch.

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General enquiries

PersonNick McLean
webenquiries@howden.com
+44 141 885 7500

Parts & Service

Lifetime Support

Our lifelong aftercare service will supply original replacement parts, support you with maintenance and installation, and even train your own engineers in maintenance techniques. We keep detailed plant records almost indefinitely, and regularly supply spare parts for machinery over 50 years old.