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Environmental
Energy Engineering

Since 1991, Thöni Environmental Energy Engineering has been developing systems designed to generate bioenergy from organic waste. We put together the best individual solutions for our customers, from planning and construction to service.

Thoeni Umwelt Energietechnik

High Solids Anaerobic Digestion (TTV)

Put Waste in – Draw Energy out

Our society is supplying more and more consumer goods to more and more people – and the volume of waste this produces is rising by the day. But waste material also harbours great potential. Thöni Environmental Energy Engineering takes this waste and treats it, returning clean energy into society and restoring other valuable materials to the ecological cycle.

Finely tuned technical components
The heart of the Thöni dry digestion system is the so-called plug flow digester. A slowly rotating paddle agitator ensures optimum mixing of the digestate, resulting in a high biogas yield. Hot water flows through heating elements, which in turn heat up the substrate. A piston pump transports the digestate from the digester through a conduit system and on to the next processing stage. A subflow of this fermentation residue makes its way back to the digester, where it acts as a inoculation material, adding a defined quantity of microorganisms to enrich the fresh input material.

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TTV Digester

A Unique Biogas Reactor

The TTV plug flow digester is ideal for use with organic waste that is dry and has a high impurity content. Its core components are patented; these include the walk-in-accessible heated digester floor and the strongest and most robust paddle agitator in use in the field of high solids AD plants. The Thöni paddle agitator is characterised by its ability to perform the complex task of fermenting inhomogeneous substrates uniformly and consistently. The dimensioning of the paddle and shaft is an important factor of mixing efficiency and for ensuring a virtually unlimited service life – even when subjected to very high stress levels. For this reason, the paddle head is specially formed from hard-wearing steel. The special mixer configuration – comprising the design and arrangement of the paddles – allows for 100% prevention of sedimentation, while continually transporting sediments to the digester discharge and at the same time preventing the formation of floating layers. This ensures constant maintenance-free operation of the digester – even when the input material contains very difficult contaminants.

Reliability of every component
The Thöni high solids anaerobic digestion system is characterised by its high level of functionality and ease of maintenance. This is down to our many years of experience in the construction and operation of digestion plants. When we plan a system, we make sure that we install robust plant equipment, including redundant components. This enables us to ensure minimal down times, even when performing servicing and maintenance activities.

TTV Components

Thöni Screw Press (TSP 350-C)

  • The Thöni screw press (TSP 350-C) is extremely efficient in removing water from the digestates of various compositions and dry material content.

TTV Paddle-shaft

  • The TTV plug flow digester is ideal for use with organic waste that is dry and has a high impurity content. Its core components are patented; these include the walk-in-accessible heated digester floor and the strongest and most robust paddle agitator in use in the field of high solids AD plants.

Are you interested in finding out more about Thöni’s high solids anaerobic digestion system solutions?

Portrait Peter Scherl

Your contact person

Peter Scherl
Tel.: +43 5262 6903-538
peter.scherl@thoeni.com

Thöni Wet Digestion (TNV)

Harvest green energy with wet digestion plants from Thöni

At Thöni Environmental Energy Engineering, we are specialists in generating bioenergy from renewable raw materials, agricultural by-products and organic waste. Our innovative system solutions have grown out of more than 20 years experience in the construction and operation of biogas plants. We work as efficiently as nature itself, and our customers are highly satisfied with our sophisticated, intelligent plant engineering.

Mature technology for maximum biogas yields
The heart of Thöni’s natural gas technology is the wet digester, which is filled continuously with solid and liquid input materials using a special feed system. Slowly rotating paddle agitators ensure optimum mixing of the digestate, resulting in high biogas yields. In addition, an integrated heating system ensures ideal conditions for the generation of biogas. The fermented substrate is subsequently dewatered and can be spread directly on agricultural fields for use as a high-quality fertiliser.

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Thöni Paddelrührwerk

Paddle Agitator

The patented Thöni paddle agitator is ideal for ensuring efficient mixing of a wide range of feeds with a very high dry material content. Specially designed paddles keep the material in motion to stop heavy impurities from being deposited on the floor of the digester and prevent potential suspended matter from forming floating layers. This creates ideal conditions in which microorganisms are able to biodegrade the material. The efficient mixing motion means that no further dilution of the digester content with water or by recirculation is needed, with the advantage that less liquid needs to be pumped into the system. It also keeps energy consumption and maintenance costs low.

Are you interested in finding out more about Thöni’s wet digestion solutions?

contactperson - Titelbild

Your contact person

Robert Lackner
Tel.: +43 5262 6903-507
robert.lackner@thoeni.com

THÖNI CARE

Service that never stops.

With THÖNI CARE, you can trust in our comprehensive, tailor-made service. Together we will determine how to achieve the constant and sustainable operation of your plant – with maximum quality. Our aim is to guarantee your company’s waste Management processes while enabling the optimum utilisation of your plant’s potential.

This special service is offered to you both from our department in Telfs and through Thöni Italia in Rovereto.

Thöni Care

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

Rundum-Service

All-round service

Ersatzteile

Spare and wear parts service

Optimierungsmanagement

Optimisation management

Biologie-Service

Biological service

Are you interested in finding out more about THÖNI CARE services? We look forward to hearing from you!

contactperson - Titelbild

Your contact person

Hugo Urdaneta Padron
Tel.: +34 693 548 975
hugo.urdaneta@thoeni.com

Address

Thöni Italia S.r.l.
Via per Marco 12/B
38068 Rovereto (TN)
Italien
Roberto Mischi

Your contact person

Roberto Mischi
Tel.: +39 0464 466322
roberto.mischi@thoeni.com

Individual Solutions

Technological competence for overall solutions

Our know-how doesn’t end with fermentation processes: at Thöni we are also specialists in the onward treatment of the digester output. Digestates of varying dry material content exit are discharged from the digester and dewatered in the standard plant configuration using Thöni screw presses. This results in a solid combotable digestate and a high-quality liquid fertiliser for agricultural use. Alternatively, Thöni also offers you wastewater-free operational solutions based on our 25 years of experience. We can also customise our innovative digestate treatment technologies to the customer’s individual requirements.

Partnership with quality
We supply highly efficient turnkey solutions at an optimum price-performance ratio. And not only that – as a competent technology partner, we can also provide you with the expertise you need to be able to build your own dry digestion facility. We know the fundamental challenges that occur at municipal level. We analyse the starting point and examine your human resources and structural capacities as well as the regional development that is plannable in the mid-term and relevant environmental technological aspects.

Thöni Umwelt Energietechnik individuelle Lösungen

Are you interested in finding out more about our custom solutions? We look forward to hearing from you!

Portrait Peter Scherl

Your contact person

Peter Scherl
Tel.: +43 5262 6903-538
peter.scherl@thoeni.com

References and Partners

Selected references of our solutions

TTV

Frankfurt (DE)

  • Operator

    RMB Frankfurt

  • Plant data

    Launched: 2017
    Input: 22,000 t/yr biowaste
    Digester: TTV 1.300

Forsbacka / Gävle (SE)

  • Operator

    Gästrike Ekogas AB

  • Plant data

    Launched: 2017
    Input: 25,000 t/yr kitchen waste, biowaste, greases, cut green waste
    Digester: TTV 2.250

TNV

Barby (DE)

  • Operator

    Biomethananlage Barby GmbH & Co KG

  • Plant data

    Launched: 2015
    Input: maize, grass silage, sorghum, whole plant silage, sugar beet, farm manure

Staßfurt (DE)

  • Operator

    Biomethananlage Straßfurt Betriebs GmbH & Co KG

  • Plant data

    Launched: 2015
    Input: maize, grass silage, whole plant silage, sugar beet, Sudan grass/millet, farm manure

Quality Promise

The plus for your biogas plant.

From planning to construction and on to maintenance and servicing – this is the concept pursued by Thöni Environment Energy Engineering. 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.

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