3. Work program
3.1 Exchange of ideas and experiences between the member countries
3.5 Landfill digestion and gas extraction
3.6
Feedstock
separation and pretreatment of waste materials to be
anaerobically digested
3.8 Information exchange - national/international industry forum
3.9 Exchange of research information
3.10 Industrial waste water treatment - High rate digesters
The work program has been developed on the basis of three actions:
1. Information collation on the actual interests and on-going programs in the
actual member states and in potential member states (pull effect)
2. Actual
trends in design and
development of new plants (P&D-installations) and
equipment (push effect).
3. Assist
participating and non-participating countries in adopting appropriate.
In
the following we will highlight a few topics to be treated during the next task.
However, the final choice of projects and the detailed POW (priorities) will be
set during the first Task meeting by the participating members.
3.1 Exchange of ideas and
experiences between the member
countries
This
exchange generates a greater knowledge and new initiatives within the Task and
hereby a possibility to a knowledge exchange to groups, organisations,
industries, researchers etc. outside IEA by produced deliverables, workshops and
seminars organised by the Task.
When
meetings are held within the Task we should also meet with governmental agencies
and industry in the actual countries in order to catch up with the latest
development in legislation, subsidiary and tax politics.
The
quality of the compost as well as potential air and water emissions are often a
barrier to the application of AD-processes. In particular the compost quality
has to fulfill high standards with respect to hygiene, chemical and physical
composition as well as maturity. The work started during the last two Task
should be continued in collaboration with other national an international
working groups or associations such as Waste for Energy, AD-Nett or Veterinarian
Associations.
It
is planned to hold a workshop or seminar in conjunction with AD-Nett, ALTENER or
other networks. The workshop could also cover topic 6 «Feedstock Separation».
Work program
The
energy use of biogas is one of the Task’s major items. The Task focused on
this in the former period through the project on upgrading and utilisation of
biogas resulting in a brochure. The aim is that this topic is to be updated on
the web page or in the brochure when the current one is out of print. In the
update we want to include:
c a review of electricity generation technologies (motors, turbines, fuel
cells),
c a presentation of the potential of co-operating with the natural gas
industry and
natural gas grid market potential,
c upgraded biogas quality harmonisation between countries (for vehicle fuel
use).
The big environmental benefits of biogas as vehicle
fuel will be highlighted. New
biogas (or natural gas) engines as well as vehicle designs shall be promoted
through marketing projects (tours or exhibitions) in collaboration with ENGVA.
Co-digestion
of MSW and other bio-wastes such as organic industrial waste together with
manure is applied at several plants. Increasingly also energy crops are applied.
Within the next Task period we want to discuss the merits and limits of these
different Co-substrates. Basic information for plant operators, administration
and politicians is to be collated. The following activities are planned:
c Brochure on “Trends in Co-digestion”
c Support or coordinate workshops
c Exchange information with searchers.
Work program
Landfill
digestion technologies as well as landfill gas capture methodologies have to be
reviewed. This will be done in conjunction with the Dutch Novem and IEA Task on
Energy from Intergated Solid Waste Management and the IEA CADDET Renewable
Energy Technologies Programme.
Within this activity we will also try to give an
answer to the question: How can AD-technology help to reduce organics to
landfilling? This is, especially in the EC, a big question within the next three
year period due to already existing or coming limitations or prohibitions on
landfilling of organic waste.
3.6 Feedstock
separation and pretreatment of waste
materials to be anaerobically digested
Concerning the quality of digestate a very important
matter is the choice of system for feedstock separation and pretreatment. This
matter was already discussed and worked on in the former Task period but will be
concluded within the next Task period. The different possibilities of separation
such as source separation, centralised separation or stabilisation by
pre-treatment of the organic fraction of household waste will be covered.
Emphasis will be put on limitations of different AD technologies and end uses.
Work program
A
homepage for the Task will be produced in order to have fast and easy access to
the outcome of the activities within the Task. The homepage will among other
things include:
c reference plant list with a special presentation of “good examples”
c publication list
c upgrading of biogas presentation with reference list (from brochure)
3.8 Information exchange –
national/international
industry
forum
In order to avoid double work either in different member countries or in different networks a very important part of the Task work is to exchange information with national and international networks.The national networks can be biomass or biogas associations and the information exchange with them is made by each country representative. The preferential international networks are: AD-net, WfE, ENGVA, IANGV, IEA CADDET and the American Biomass Association.
Within the Task we also aim to put together an
industrial forum to exchange experiences and information with the industry (contractors,
suppliers, engineering companies etc.). This industrial forum will start as a
“kick-off”-meeting with the industry invited and thereafter a communication
will be held with them on our homepage.
Work Programm
The development of full-scale digestion has made
large progress towards simpler designs at lower cost. Better understanding of
the digestion process allows the application of a wider range of material at
higher loading rates. However, this progress led at the same time to new bottle
necks. New research projects became a necessity. A special workshop should be
dedicated to the exchange of research results and ongoing research projects.
Waste water treatment or pre-treatment with high organic loads by anaerobic digestion in one of the biggest success-stories. Far over 1’000 installations are operated worldwide. This relevant technology, which is applied in all continents, should be documented in an information brochure addressed to decision makers and potential operators. Even though the technology is widely applied, there is still a large potential. The AD not only reduces the emissions but is also economically a very viable option for waste water treatment.