This 4th international study tour and training course will lead you through multi-dimensional best practice nearly 35 years experience on decentralised organic waste recycling.

In B2B meetings and practice-orientated lectures we will cover the entire chain of a well-structured national and local biowaste recycling regime. This will cover:

  • The necessary legal and technical framework regulations , including quality standards certification schemes,
  • Best practice collection logistics and economics with the aim to achieve a high quantitative as well as qualitative capture rate for all bio-waste origins
  • Austrian success story of on-farm composting in cooperation with the communities, guaranteeing highest compost qualities and a high performance regional humus cycle
  • Techniques and quality management of open windrow composting of food and garden waste at scales between 1 000 and 100 000 tpa including aeration systems
  • Key learnings on the biology of composting, humus production, compost quality criteria as well as hygiene & odour management, documentation, monitoring & reporting
  • Results of long-term field trials on soil improvement with compost
  • A visit of one of the most innovative biogas plants for food and agricultural residues including bio-methane fuel production and CO2 recovery, digestate use and an in depth insight into the framework conditions for a successful biogas regime on national level

As a special highlight, we will visit the 8th International Practitioner Day on Composting, Europe’s biggest show of bio-mass and compost processing machines organised by the Compost and Biogas Association Austria.

ISWA Austria



The lectures and seminars during the one week study tour will dive into the following topics:
  • Strategic, economic & regulatory framework
  • Technical standards for composting & AD
  • Product quality standards
  • Public relations and stakeholder involvement
  • Agricultural cooperation in decentralised collection and on-farm composting
  • Biology of composting: key learnings in HUMUS production
  • Hygiene & odour management, documentation, monitoring & reporting
  • Compost / digestate markets und use
  • compost substrate production in practice
The study tour involves many site visits and B2B meetings, below you will find an overview what visits are included:
  • Open windrow Compost plant of the City of Vienna (150.000 tpa)
  •  The practice of separate collection of all types of bio-waste: Organisation, responsibilities, partners, economics, information & education work
  • Key principles and techniques of open windrow composting of food waste, garden& park waste
  • Innovative separation techniques for impurities (plastics, metals, glass, stones)
  • Biogas plant – bio-methane fuel production and CO2 recovery, digestate use
  • Composting: Quality & process management and monitoring
  • Inter-municipal cooperation for recycling on district and pronvincial scale
  • Europe’s biggest show of bio-mass and compost processing machines


Monday September 4th:

08:15-09:00:  Drive to Bioforschung Austria, Vienna
09:00-09:30 Welcome Tour de Table – Introduction – Forecast

Key elements and structural and legal framework of successful bio-waste management –experience from Europe and Austria – strategic & legal background, key features, quantities, current development (Florian Amlinger, CEO Compost – Consulting & Development; N.N. Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation and Technoology)

Bio-waste and compost strategy and practice of the City of Vienna (1.98 mio inhabitants). Veronika Wechselberger, Compost Unit at MA 48, City of Vienna

10:45-12:30  LECTURE & DEMONSTRATION: Compost, an important element in ecological soil and humusmanagement (Eva Erhart, Bioforschung Austria)
12:30-13:15 Lunch Buffet: Iss mich!
13:15-14:15 Drive to BIOGAS plant Margarethen am Moos
14:15-15:15  EVM Biogas Energy Supply Margarethen am Moos LTD – (60,000 tpa): liquid fermentation of agricultural by-products, energy crops, manure; upgrading bio-methane & gas station, use of CO2 for greenhouse production (Fritz Schwarz)
15:15-16:15 General conditions for successful AD in bio-waste recycling: capacities, green electricity law, feed in tariffs general economics etc. (Franz Krichmeyr , KBVÖ/Compost & Biogas Association Austria)
16:15-17:30: Drive to Hotel Steinberger – Altlengbach
18:30 Dinner & round table


Tuesday September 5th: 

08:30-09:00 Drive to 3er Hof – St. Poelten
09:00-11:00 Bio-waste and green waste collection and composting scheme in cooperation with farmers.
11:00-11:30  LECTURE: Towards a deeper understanding of the biology and the technique of composting – PART 1
11:30-12:30 Lunch​
12:30-14:30 Drive to Wels
14:30 – 16:30 O.Ö. Landes-Abfallverwertungsunternehmen AG (Uper Austria Waste Recycling EnterpriseInc.) – Logistics, performance and economics of an provincial integrated municipal re-use and recycling cooperation
16:30-17:30 LECTURE: Towards a deeper understanding of the biology and the technique of composting – PART 2
17:30-18:30 Drive Transfer to Hotel Wolfsegger in Upper
18:45 Dinner
20:00 OPEN FORUM, SessionQ & A


Wednesday, September 6th: 

​8:30-09:00 Drive to Composting Plant “Huemer Compost”

The Upper Austria agricultural composting strategy

  • Historic development
  • The role of the authorities
  • Environmental and waste licensing and control – important requirements

From a farmer to a professional compost facility Huemer Compost (12.000 t/a)

  • Quality Management for high end Compost products,
  • Electronic quality management and documentation system, in house quality control and laboratory tests
  • Compost market
11:30-12:30 Drive to Waste Management Association Rohrbach
  • How to achieve 0,2% impurities in source separated kitchen waste from households?
  • Separate Collection for food waste with compostable plastic and paper bags operated by a local farmer
  • 100% bring scheme for Garden waste to on-farm composting plant
  • Public relation work and logistics of municipal waste management association – on the
    route to Zero Waste in a rural environment
13:45-14:15 Lunch Buffet sponsored by BAV Rohrbach
14:15- 14:45 Visit of the Recycling Centre Rohrbach collecting > 60 waste fractions for reuse and recycling
14:45-16:45  Visit of the On-Farm agricultural compost plant – a full service partner for separate
collection and composting; The farmer has been awarded with the COMPOSKAR 2017 for
best quality compost and offers different compost substrates
16:45-19:45 Drive to Vienna – Hotel Regina
20:30 Dinner in Restaurant​


Thursday, September 7th: 

09:00 -09:30 Drive to Practitioner Day – Composting Plant Lobau, City of Vienna

6th International Practitioner Day – Composting – Austrian Compost & Bioigas Association

  • One of the largest exhibitions and machine shows in Europe presenting latest developments in compost and biomass technologies
  • Newest innovations, trends and Visions in bio-waste technologies
  • Leading companies present their products and services to an international audience
  • Shredders, choppers, crushers for biomass for all purposes,
  • Windrow turners at all scales
  • Screening of compost
  • Monitoring and controlling compost process and product
  • Loaders and transport
  • CompOscar award of the competition of best performing composts in Austria.
15:00 – 17:00

Lectures and Talks:

  • ISWA campaigns for carbon recycling via compost and some international success stories (Marco Ricci, ISWA Working Group on Biological Treatment of Waste)
  • European policy perspectives and challenges for a consistent biowaste recycling –
    role and activities of the European Compost Network (Riccardo Gambini, European Compost Network, ECN)
  • National and International Quality Assurance Scheme for Compost – data
    monitoring and reporting (Florian Amlinger )
17:00 -19:00 Drive to Hotel Rose, Maria Taferl
19:30 Dinner at Hotel Rose


Friday, September 8th 

08:30-09:00 Drive to Composting Plant Seiringer – Wieselburg

Innovative Composting techniques – ~ 20.000 t composting plant:

  • Separation and pre-treatment of different organic waste fractions before
  • composting or anaerobic digestion
  • Efficient forced aeration with and without bio-filter systems
  • Innovative purification techniques
11:30 – 12:30  Lecture: Collection schemes for Bio-Waste: combined collection of kitchen and garden waste – Marrtin Ritt, Waste Management Association Mel
  • Lunch
  • Wrap-up Q&A Session
  • Certificates & Official Closure
14:30-16:30 Drive back to Vienna



Dates: 4-8 September 2023 in Austria.

Multiple locations in Austria.

University of Texas at Arlington

Part of the registration fee is a 5 night hotel room stay.
3-4 September Hotel Regina, Vienna

4-5  September Hotel Steinberger

5-6  September Hotel Wolfsegger

6-7 September Hotel Regina, Vienna

7-8 September Hotel Rose

Please consult with the hotel directly in case you would like to book additional nights before and/or after the tour.
Participants will be accommodated in comfortable, single room hotels with breakfast and WiFi.

Arrival and departure dates

Recommended date of arrival: Sunday, 3rd of September 2023
Recommended date of departure: Saturday, 9th of September 2023


Florian Amlinger

Florian Amlinger

Tour Leader Agronomist, CEO of Compost, Consulting & Development and co-founder of ‘100NGO’ and European Compost Network (ECN e.V)

Florian Amlinger  has 30 years experience of research and development projects on separate collection and composting, process optimisation, quality testing, humus management, international quality assurance and planning of composting plants.


Register for the ISWA study tour by selecting one of the ticket options below. Early bird has a discount of 10% and will be available until July 4th. Overall registration will close on 25th of August 2023.

Registration fees include accommodation with breakfast from September 3 –8 2023, course participation, course materials, refreshments, lunch and dinner, as well as transportation and visits to the waste treatment plants. 21% VAT is applicable to the fees and is mentioned clearly when it is included. Student and Online ISWA memberships are not eligible for the discounted fee. Upon registration, participants accept all arrangements by ISWA, ISWA Austria and Florian Amlinger – ‘Compost – Consuling & Development’. The organisers do not assume liability during field demonstrations and
technical visits. Travel health insurance is advisable. The programme may be subject to change. Participants will receive a Certificate of Participation.

Please email for group discounts (from 3 people) or for low-/low-middle income economies discounted tickets (50% off, 3 available on a first come first serve basis).

Cancellation Policy

ISWA reserves the right to cancel the course if the minimum number of participants is not reached.
Minimum number of participants: 12
Registration may be transferred to a nominated representative. Any cancellation of registration must be submitted in
writing to ISWA by e-mail:
Cancellation and refund will be subject to the following conditions:
• Cancellation until 28th July 2023: 50% refund
• Cancellation until 18th August 2023: 10% refund
• Cancellation after 18th August 2023 or “no show”: No refund
In case of cancellation of the study tour due to unforeseeable events including pandemic regulations. ISWA will refund
the registration fee but no other costs incurred prior to cancellation. In case of cancellation of a registrant the above
rules apply.
Bank transfer costs will be deducted from any refund.

See you in Austria!









How can I receive a letter of invitation?

If you require a VISA to enter Austria we can provide you with a letter of invitation confirming your registration for the study tour. Please send an email to to request a letter of invitation. Please note that we do not provide letters of invitation before a confirmed registration and we advise to check with the embassy in your country for how much time you need to apply, proceed and obtain your visa.

Will I receive a certificate of participation?

Yes, you will receive a certificate of participation at the end study tour.

Are scholarships available?

There are currently no scholarships available

How can I indicate my dietary requirements?

The registration form has the option to provide us with your dietary requirements, please indicate them there or send and email to


Get in touch if you have any questions or comments.

5 + 15 =

Zhiren Ye

Zhiren Ye

Event Manager ISWA

Contact Zhiren for registration matters or to cancel registration

Phone number: +31 (0)10 808 3990

Florian Amlinger

Florian Amlinger

Tour Leader Agronomist, CEO of Compost, Consulting & Development and co-founder of ‘100NGO’ and European Compost Network (ECN e.V)

Contact Florian Amlinger for questions on the program, location & infrastructure.





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