Slide background The Hydroflux Group consists of eight specialist water and wastewater treatment companies.These integrated businesses undertake design and construction projects, and provide aftermarket services to the municipal, mining and industrial sectors
Slide background The Hydroflux Group of Companies is based around teams of water and wastewater treatment experts harnessing the power of world leading research and technologies for a more sustainable use of water, energy and resources. .
Slide background Our Industrial division has an in depth knowledge and understanding of ALL food and beverage processes which enables it to design wastewater treatment plants effectively. .
Slide background Hydroflux Utilities provides many forms of water or wastewater plant support programs including, regular service and preventative maintenance contracts, chemical and spares supply and operation contracts for both industrial and municipal customers.
Slide background Our engineers are fully conversant with the water generated during all types of construction work and have designed and implemented unique and cost effective methods of treatment and the associated sludge handling systems.
Slide background Hydroflux Epco – With over 50 years experience in municipal and industrial wastewater treatment plants our products include – Wastewater Clarifiers, Water Clarifiers , Sludge Digesters and Package Sewage Treatment Plants
Slide background Cress Consulting is a specialist business providing environmental and sustainability consulting services to industry throughout Australia.

Retrofitting Step Type Sewage Screens. Do You Replace With a New One?

Step Screen was invented by HUBER’s Swedish subsidiary Hydropress AB in the early 1980’s and has been the most copied fine screen.

Across Australia and New Zealand hundreds of step type screens have been installed with many now reaching the end of life.

So do you replace the step screen with a new one or with an alternative technology?

Hydroflux installation of a HUBER sewage screen

Since the invention of the step screen many different screen types are now available on the market which offer higher screening capture rates.

A summary of solutions from Hydroflux Epco is as follows:

Screen Type Advantage Disadvantage
RakeMax Mutli Rake Bar Screen
  • High screening efficiency
  • Totally enclosed
  • Easy to retrofit with similar dimensions to step screen
  • Handles very high levels of grit, sand and screenings
  • NSEF certified for 75% capture
  • Submerged bearing
  • One dimensioning screening profile
Escamax Band Screen
  • High screening efficiency
  • Totally enclosed
  • Easy to retrofit with similar dimensions to step screen
  • NSEF certified for 84% capture
  • Higher headloss than step type screen
  • Reliance on washwater supply

There are numerous items to consider when replacing a step type screen:

  • Screening capture rates
  • Additional headloss and hydraulic considerations that the inlet works can sustain
  • Reliable washwater supply is required with some screen types
  • Channel modifications to accommodate a new type of screen

Hydroflux Epco’s staff have been involved with sewage screening technology since the mid 1990’s and can provide advice on how to approach the replacement of your existing step type screen with either a new or alternative screen type.

For more information on the Hydroflux Epco’s Screens and screening systems please click here.

About the Hydroflux Group
The Hydroflux Group comprises eleven companies based in Australia, New Zealand, Fiji and the UK, providing specialist design and build, equipment, processes and operational services in water and wastewater treatment and sludge treatment and dewatering. The Hydroflux Group are the exclusive Australian representatives for HUBER Technology, AEROSTRIP, CNP Technologies, Flootech MBBR, Dutch Spiral and Organica Water and incorporates EPCO Australia.

Hydroflux Pty Ltd
Level 26, 44 Market St. Sydney NSW 2000 Australia
P +61 2 9089 8833 F +61 2 9089 8830
[email protected]