BIOFerm Energy Systems – COCCUS Complete Mix Digester

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BIOFerm Energy Systems – COCCUS Complete Mix Digester

A Viessmann Group Member

Company Description:

BIOFerm Energy Systems is a leading provider of turnkey anaerobic digestion and gas upgrading systems in North America – with over 450 digester installations and 900 PSA installations (including gas upgrading) through the Viessmann Group.

Technology Description:

The COCCUS® complete-mix anaerobic digester is considered a low solids (or “wet”) digester designed to process organic waste materials with a solids content of  8-12% TS.

The COCCUS® tank technology is well suited for processing large amounts of:

  • Liquid manure
  • Biosolids
  • Food waste
  • Energy crops
  • Other low solids waste

 COCCUS® digester tanks are available in different sizes and can be combined to meet specific needs of individual projects; the organic waste processing range is ~ 7,000 tons per year and up, depending on tank size and expansions.

The COCCUS® tanks have a reinforced concrete design equipped with 2- 3 REMEX® paddle mixers. The drive motor of these mixers is mounted onto the outside wall of the tank so that only the polyamide bearings are located inside the fermenter. COCCUS® tanks are heated through hydronic heating installed onto the interior tank wall. Biological desulfurization is integrated into the wooden roof structure of the gas storage which provides for a cost effective removal of a large percentage of the hydrogen sulfide.

BIOFerm Energy Systems 440 Science Drive Suite 300 Madison, WI USA 608-467-5523 Visit Company Website

Technology Type

  • Anaerobic Digestion

Vendor

  • Equipment Vendor

Product

  • Energy

Problem

  • GHG
  • Odor
  • Pathogens

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Technology Strengths, Weaknesses and Critical Indicators

Anaerobic Digestion:

  • Long usable life and can be run reliably
  • Creates energy and generates environmental credits
  • Proper feeding & system monitoring is required to avoid system downtime
  • Proven technology for odor control
  • Proven technology for GHG reduction
  • Proven technology for pathogen reduction
  • Different types of systems produce varying gas production rates
  • Requires proper preparation of the feedstock
  • Requires other technologies for energy utilization
  • Requires other technologies for digestate handling
  • Requires other technologies to prevent nitrogen loss
  • Complex systems may require expertise not available on-farm

Newtrient Comments/Opinions:

Anaerobic Digester technology:

  • Is proven technology for odor, GHG and pathogen reduction and energy production
  • Has a long usable life and can be run reliably
  • Require proper preparation of the feedstock
  • Usually requires other technologies for energy utilization
  • Usually requires other technologies for digestate handling
  • Proper feeding & system monitoring is required to avoid system downtime
  The BIOFerm COCCUS is a complete mixed anaerobic digester.  Utilizing paddle style mixers with externally mounted motors, the COCCUS is designed to operate at 8 to 12% total solids.  BIOFerm has one COCCUS installed on a U.S. dairy farm in Wisconsin, operating since 2013. Worldwide, BIOFerm is a leader in the anaerobic digester industry with over 350 operating anaerobic digesters.   Newtrient will continue to work with BIOFerm on continued updates to the technology and the dairy manure application as they develop more projects.

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