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New eco-friendly filter media developed for RAS 

New eco-friendly filter media developed for RAS 

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By: Waraden Biomedia


Warden Biomedia has developed a new sustainable filter media after a three years research partnership with Cranfield University. Biopebble is the next generation of filter media, designed for efficient biological wastewater treatment for recirculating aquaculture systems (RAS).

At Cranfield, Warden Biomedia demonstrated that spherical-shaped media design can reduce the energy input required in the effluent treatment system.

The spherical design requires less energy to be agitated in solution, improving wastewater treatment efficiency, and is available in 100% recycled plastic. The new Biopebble media also showed high ammonia removal and phosphorus removal rates in tests against other media.

The structure and surface textures are designed specifically to provide a large, protected surface area (500m²/m³) and high voidage (81%) for optimum biofilm attachment and biological treatment performance.

The new design offers significant benefits for RAS including reduced aeration energy requirements, improved biological commissioning times and process security, higher biomass retention, increased wastewater treatment capacity, reductions in required tank volume, promotes generation of healthy and thin biofilms, and generates biofilms with resistance to shock loads.

The research project was part of a Knowledge Transfer Partnership (KTP) program, partially funded by Innovate UK.  Following successful pilot and full-scale trials, Biopebble is now available to the aquaculture market. The media is manufactured in the UK, available in both high-quality recycled or virgin polypropylene, guaranteed free from halogens, and fully recyclable at the end of its process life contributing to a circular economy.

About Warden Biomedia

Warden Biomedia has over 30 years of experience in the research, development, and manufacture of filter media for biological wastewater treatment processes, providing bespoke filter media solutions to wastewater, aquaculture and odor control applications across the UK, Europe and the world. www.wardenbiomedia.com

 About Cranfield University

 Cranfield University is home to two centers of excellence for water: Cranfield Water Science Institute and the Centre for Water, Environment, and Development, and has a global reputation for its research in the science, engineering, and management of water, having driven innovation in the water sector for over 40 years.

For more information, visit www.wardenbiomedia.com/products/biopebble/
Jane Wardrop Redline Public Relations. T: 07850 568759 info@redline-pr.co.uk www.redline-pr.co.uk

MSD
WAS
CARGILL
Cargill Empyreal75
REEF
ISFNF
ISFNF
GLOBAL LEADERS

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