Environmental Engineering
Waste to Biogas
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put Waste in – draw Energy out
Thoeni has been developing systems designed to generate bioenergy from organic waste. since 1991. From planning and construction to service, the company provides customized solutions tailored to each customer’s needs.
Partnership in Quality
Thoeni stands for turnkey, highly efficient plant technology with an optimal price-performance ratio. At the same time, the company sees itself as a competent technology partner, providing its customers with the necessary know-how to also build and operate anaerobic digestion plants themselves.
Get to know us!
Thöni Sustainable Solutions GmbH
Obermarktstraße 48 6410 Telfs Österreich
TTV Thoeni High Solids Anaerobic Digestion (cHSAD)
Closing the loop
Our society is supplying more and more people with an ever-growing number of consumer goods – and the volume of waste is increasing every day. But there is enormous potential hidden in this waste! Thoeni harnesses this potential, returning clean energy to society and valuable materials to the ecological cycle.
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Finely tuned technical components
The heart of the TTV Thoeni High Solids Anaerobic Digestion (cHSAD) system is the TTV Thoeni Plug Flow Digester. A slowly rotating paddle agitator ensures optimal mixing of the digestate, resulting high biogas yields. Hot water flows through heating elements, warming the substrate. A piston pump transports the digestate from the TTV Thoeni Digester through a piping system to the next processing stage. A partial flow of the digestate imakes its way back to the TTV Thoeni Plug Flow Digester, where it serves as inoculation material, introducing a defined quantity of microorganisms to enrich the fresh input material.
TTV-Folder
Discover Thoeni’s expertise in the field of High Solids Anaerobic Digestion on the following pages
Are you interested in finding out more about TTV Thoeni High Solids Anaerobic Digestion (sHSAD) system solutions?
How to deal with impurities in organic waste
High impurity rates are no problem for the TTV Plug Flow Digester
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The substrate is gently transported from one end of the TTV Plug Flow Digester to the other. The specially designed Thoeni Paddle Agitator prevents sedimentation. In this way, potential sediments are continuously carried to the digester exit, leaving no chance for floating or sinking layers to form. This ensures constant, maintenance-free operation of the digester throughout the year.
Components
TTV Thoeni Paddle Agitator
The TTV Thoeni Plug Flow Digester is specifically designed for dry organic waste with a high impurity content.
TSP Thoeni Screw Press (TSP350‑Twin)
The TSP Thoeni Screw Press (TSP350-Twin) is ideal for efficient solid-liquid separation in the digestate processing chain.
TSP Thoeni Screw Press (TSP 350‑C)
The TSP Thoeni Screw Press (TSP 350-C) is perfectly suited for dewatering digestate of various residual matter and with different dry matter contents.
References
Aarau (CH)
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Auftraggeber
Green Power Aarau AG
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Anlagedaten
Launched: 2025
Input: 27.000 t/a organic waste, green waste, food residue
Digester: TTV1800 (concrete)
Raw biogas: 2.500.000 Nm³/a
Melton (UK)
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Operator
Melton Energy Tech Ltd
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Plant data
Launched: 2025
Input: 57.200 t/a OMSW
Digester: 2x TTV2250; steel
Raw biogas: ~7.9 Mio. Nm³/a
TNV Thoeni High Solids Wet Digestion
Semi Dry
Thoeni specializes in producing bioenergy from renewable raw materials, agricultural by-products, and organic waste. The innovative system solutions are based on more than 25 years of experience in building and operating biogas plants, combining efficient technology with sustainable processes.
Mature technology for maximum biogas yields
The heart of Thoeni’s wet digestion technology is the TNV Thoeni Wet Digester, which is continuously fed with liquid and solid input materials through a specialized feeding system. Slowly rotating paddle agitators ensure optimal mixing of the substrate, ensuring high biogas yields. An integrated heating system provides ideal conditions for biogas production. The digested substrate is then dewatered and can be used directly as a high-quality fertilizer on agricultural fields.
TNV Folder
Discover Thoeni’s expertise in the field of TNV Wet Digestion – Semi Dry on the following pages
How to deal with impurities in organic waste
Feedstocks with a high dry matter content and a low proportion of impurities are just right for the TNV Digester
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Slow-running paddle mixers ensure that the viscous substrate in the TNV Digester is mixed efficiently during digestion process. This largely prevents sinking and floating layers, ensures safe operation as well as low maintenance of the TNV digester for many years.
Components
TNV Thoeni Paddle Agitator
The patented TNV Thoeni Agitator ensures efficient mixing of feedstocks with high dry matter content. Specially designed paddles prevent sedimentation and floating layers, creating ideal conditions for biological degradation by microorganisms.
References
TNV
Studfarm - Rufford (UK)
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Operator
future biogas
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Plant data
Launched: 2016
Input: maize silage, straw, whole crop silage
Digester: 1 primary digester, 1 secondary digester
Herbstadt (DE)
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Operator
biorest GmbH
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Plant data
Commissioning: 2020
Input: 20,000 t/a packaged food waste, biowaste, food remains, residues of food production
Digester: 1 primary, 1 secondary digester
TGV Thoeni Digestate Processing
Smart treatment of digestate
Thoeni’s proven expertise extends beyond anaerobic waste treatment. With the TGV Thoeni Digestate Processing system, an innovative method is available that produces high-quality compost from variable mixtures of digestate and organic waste – or from pure digestate.
In combination with TTV Thoeni High Solids Anaerobic Digestion, Thoeni offers a comprehensive product portfolio for modern waste and residual material management of organic materials. This enables efficient and sustainable solutions for biowaste utilization.
Compost – a natural Fertilizer
Compost is a stabilized organic product derived from waste recycling that helps reduce greenhouse gas emissions through carbon sequestration. It improves the soil’s water retention capacity and structure, releases natural nutrients, and thereby reduces the need for chemical fertilizers. This leads to an optimised microbiological activity while preventing soil and plant diseases resulting in higher crop yields and food security.
TGV-Folder
Discover Thoeni’s expertise in the field of digestate processing on the following pages
Are you interested in finding out more about TGV Digestate Processing solutions?
Thöni Care
Service that never stops
With Thoeni Care, you can rely on comprehensive, tailored service. Together, we determine how to operate your plant sustainably and at the highest quality level over the long term. Our goal for you: to ensure the operational reliability of your facility while maximizing its potential.
This specialized service is provided both through our Telfs office and Thoeni Italia in Rovereto.
Are you interested in finding out more about Thoeni Care services? We look forward to hearing from you!
Our Process
Analysis
Survey of plant condition
and plant output
Service packages
Presentation of various
service options
Bespoke service
Plant service tailored
to your requirements
Goal
Maximum availability with
maximum gas yield
Quality Promise
From planning to construction and on to maintenance and servicing – this is the concept pursued by Thoeni. We support you as a competent partner in all matters when it comes to implementing your environmental/energy engineering project. Our objective is to subject our sustainable concepts to constant development and improvement. This approach is evidenced by the success of our patented solutions and by our international projects.
