Biologische verwerking met de Membraam Bio-Reactor (MBR)

Biologische verwerking met de Membraam Bio-Reactor (MBR)

De MBR van Wehrle Umwelt GmbH zorgt ervoor dat via een biologische behandeling met behulp van bacteriën en ultrafiltratie al het organische materiaal en stikstof uit de vloeistof worden verwijderd. Dit proces vindt plaats in drie stappen:

  • De vloeibare mest stroomt in de denitrificatie tank waarin bacteriën zorgen voor de omzetting van nitraat (NO3). Het ammonium (NH4) gaat ongewijzigd naar de nitrificatiebekkens.
  • In de beluchte bioreactor (nitrificatietank) zorgen de bacteriën voor de ontleding van het organische materiaal door actief slib en de omzetting van NH4.
  • Hierna wordt het mengsel door de buisvormige ultrafiltratie (UF) membramen geleid om het behandelde water van de biomassa te scheiden. De biomassa (sludge) uit de UF wordt teruggevoerd naar de bioreactoren en het surplus-slib naar de Evodos-centrifuge voor afscheiding.

De uit dit proces verkregen vloeistof, die naar de RO installatie wordt geleid, bevat nog uitsluitend opgeloste zouten.

  • Volledig biologisch proces met hergebruik van ontstane warmte
  • Belasting van de membramen is laag: lange levensduur bij grote spoelintervallen gegarandeerd
  • Ultrafiltratie voorkomt het uitspoelen van bacteriën waardoor bacterie populatie extreem hoog blijft
  • Per ton drijfmest resteert 810 liter vloeistof vrij van organisch materiaal en stikstof
  • 30 liter vloeistof verdampt

  • "I've seen a wide range of harvesting tools and your new centrifugal technology seems excellent due to its ability to harvest small Algae with high efficiency."

    Professor Mark Edwards, Arizona State University, USA

  • "Evodos is from left field of traditional centrifuge technology.
    I clearly see the following advantages:     1. Liquid ring self balancing, resulting a higher cut-off rate because there are no vibrations.
    2. Effective separation because of laminar flow and a low flow velocity across full cross section of the     bowl.
    3. A very compressed dewatered cake.
    4. Excellent three-phase separation because of the free interface level."     Howard Kneebone, HAK Consulting, Australia, April 2012

  • “We considered many dewatering technologies and the Evodos machine satisfied both our dewatering requirements and budget. Their novel technology and efficiency will allow us to produce a high-quality, organic product at a very cost effective price point.” Geronimos Dimitrelos, CEO of Algae to Omega, Florida, USA

  • “The biomass that comes out of the Evodos is essentially alive. That means you increase the shelf life of your product to several days, if not up to a week.” Associate professor, dr. Kirsten Heimann, James Cook University, Australia

  • "It is Evodos' mission to support our customers with best in class products for mechanical separation at minimal energy consumption and without using chemicals or consumables. Thereby we aim to win or preserve natural resources." Marco Brocken, CEO Evodos, The Netherlands

  • "I have been looking at and making application of all kinds of liquid/solids separation technologies for nearly 20 years.  What you have developed is by far and away the most efficient and advanced process I’ve ever looked at.  You have hit a home run with your spiral plate technology to dewater algae and animal manures." Benjamin Brant, CEO Ecoponex, OC/USA, April 2012

  • "The Boll Lucent system targets many different application with a wide spread of viscosity, density and different types of additives in the oil. With a standard disc stack separator we need mechanically to adjust and customize the hardware for every specific application. With the Evodos technology we can easily adapt our system for different applications without any modifications. In addition we also have a fully automatic, self-cleaning separator in line with the Boll Lucent system."
    Stefan Sandberg, CEO of Boll Lucent, April 2012

  • “For production of microalgae for commodities a scalable low energy harvesting technology is of key importance.” Proffessor dr. ir. Rene Wijffels, Wageningen University, The Netherlands

  • "This idea of high separation effectiveness combined with dry solid discharge, kept spinning around in my head." Hen Boele, CTO Evodos, The Netherlands

  • “Very interesting. It seems that you are able to harvest and concentrate Nannochloropsis into a paste with dry solid content of over 30% with an energy expenditure of 0.95kWh/m3. If this is the case it is a great achievement. Congratulations !”

    Professor Mario Tredici, Florence University, Italy

  • Key design parameters that match customer expectations

    A generation of centrifuges that is designed whilst starting from your expectations. With the end goal in mind. That is why the Evodos centrifugals give you revolutionary performance.

  • “No other centrifuge that we could find on the market meets the challenges of micro algae extraction from water as effectively as the Evodos machines and this is critically important in keeping the cost per weight of harvested algae to a minimum.” Andrew Lawson, Managing Director of MBD Energy, Australia

  • Site visit Algae to Omega

    "We appreciated the opportunity to meet all of you this past Wednesday at Algae To Omega in Fort Lauderdale. Seeing the Evodos equipment in operation was invaluable.  No brochure, sales presentation, or video could have matched the impact of witnessing the real thing up close and in action. Plus we had the chance to ask our questions directly to the Evodos people." 

    Frank Preg and Carolyn Much of AgOil International, 2012 March 7.

  • Nothing is more exciting than sending "Murphy" home

    Murphy's Laws states that "Anything that can go wrong, will go wrong".

© Evodos 2012
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