Danish Firm to Build 24,000 TPA Garden Food Waste Pre-Treatment Plant

Gemidan Ecogi A/S, which has developed a technology for processing source separated food wastes, has been awarded a contract following a procurement process by the Danish Government to establish a 24,000 tonne per year facility.

The company said that under the contract it its ECOGI food waste pre-treatment technology will be used to process domestic food waste mixed with up to 20% kerbside collected garden waste.

The ECOGI pre-treatment technology has been developed over the last four years based on the experience gained from operating a commercial-scale facility in Holsted, Denmark. According to Gemidan the technology has proved to be very effective in processing food waste:

  • Containing up to 20% contamination
  • Recovering over 95% of the available organic content for energy generation
  • Producing a pulp-based substrate that is 99.9% free of non-organic contaminants.

The Holsted based firm said that thet environmental performance of the new ECOGI facility benefits from an onsite energy from waste operation and a supply of process water from a nearby water treatment plant.

The high-quality pulp-based substrate produced will be distributed to local anaerobic digestion facilities producing biogas which will be upgraded for injection into the Danish natural gas distribution grid.

The plant will process waste collected from six municipalities in the southern area of Zealand, Denmark. According to Gemidan the ability to process mixed food and garden waste will be a key factor in enabling new and existing municipal collection services to be developed in this area of Denmark.

The purity of the substrate that ECOGI produces ensures the nutrient-rich and contaminant-free digestate-based fertiliser can be used on nearby farmland without risk of pollution to complete the recovery cycle – something which has been independently and formally verified through the EU ETV programme for new and developing environmental-based technologies.

The company added that delivery of this contract will also require it to go beyond the normal design, supply and installation of the ECOGI technology. In addition, a comprehensive maintenance support service will be provided that guarantees the replacement of all spare parts during the first two years’ operation of the equipment.

Process flexibility in dealing with a mixed food and garden waste feedstock combined with a tried and tested pre-treatment technology and low OPEX were said to be among the key factors in the award of this contract.

The facility also expected to  play a role in helping  the municipalities achieving their EU-based recycling target of 50% by 2022.

Courtesy: Waste Management World