January 2004
Mid point of EU funded (1.1 million Euro) digester research programme, DIPROWASTE (see www.diprowaste.com) to enhance the digestion process using novel techniques.
June 2004
A new digester, built by Bioplex Technologies Ltd, is now operating in England as a working demonstration model.
Interested parties are welcome to view, by appointment. Please visit the contact page for details.
(see 'Underground AD Vessel' picture opposite). |
August 2004
WRc publishes landfill tax funded study of growing media derived from digested source separated household refuse, hotel, supermarket and catering wastes. Digested, composted and screened fibre makes a good nutrient rich and beneficial organic growing medium.
September 2004
Reading University Energy Group completes evaluation of a new farm waste treatment system, with production of fertiliser enriched fibre for composting and electricity.
October 2004
Bioplex Technologies Ltd is to embark upon the evaluation of a patented low cost conversion of weeping walls, used widely on dairy farms, to an Anaerobic Digestion system. This will, in most cases, produce on-site energy and meet higher environmental standards.
January 2005
Project DIPROWASTE complete - results to be published later in 2005.
October 2005
The Portagester ® is an example of an anaerobic digester for DEFRA's Farming without Fossil Fuels project that looks at farming using home grown fuels and other renewable energy sources.
January 2006
The Longstock Portagester ® is run to produce natural fertiliser compost for selling to local growers. Farm animal and horse stable manure is pasteurised, digested and composted. |
October 2006
Contruction work completed at Otter Rotters, Honiton, Devon.
Two PG 2 digesters and biogas digester have been installed to treat kitchen waste from 500 homes. |
January 2007
Otter Rotters produce a natural fertiliser rich compost for use in a nearby commercial nursery.
Although the kitchen waste should be meat excluded, due to the risk of meat in the collected material, the process has been designed to meet the DEFRA's Animal By-Products Regulations (ABPR) standards. |
March 2007
Start of the development of the "kitchen top" range of digesters. The aim is to provide digesters, small enough to be used at home and in the garden, to produce a nutrient rich natural fertiliser that will accelerate and improve green waste composting e.g. lawn mower clippings. |
June 2007
Picture showing results of the "kitchen top" digester composting trials.
The digested kitchen waste is added to lawn mower clippings in a garden composter, which accelerates the process with less odours and more natural fertiliser as a result. |
November 2007
Testing of one of the three PG 1 digesters built for HM Prisons kitchens. |
February 2008
PG 3 digester delivered to Westray, for use at an abattoir. |
March 2008
HM Prisons digester building work complete. |
May 2008
PG 1 Portagester ® and small second stage digester delivered to South Dorset for trials on the treatment of organic wastes including household refuse.
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July - August 2008
The Royal Welsh and Pembrokeshire Shows. The PG 3 Portagester ® can treat up to 7 tonnes per batch every two days and is suitable for farm animal manure, grass and vegetable waste treatment.
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July - August 2008
Roll on-off PG 4 Portagester ® which can be moved and emptied using a standard hook load lorry. One PG 4 can treat 2,500 tonnes per year of food waste whilst producing a slow release natural fertiliser and biogas from the second stage digester.
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