Sustainable and highly efficient

Energy generation from sewage sludge

Innovative and energy self-sufficient

Groundbreaking secured sewage sludge utilisation

Innovative and energy self-sufficient utilisation concepts

Decentralised sewage sludge utilisation for the generation of thermal energy

Thermal sewage sludge utilisation plants make an important contribution to disposal safety and environmental protection. This guiding principle has led to the development of the "sludge2energy process".

The sludge2energy process is designed to utilise sewage sludge in an energy-autonomous way and is based on the combination of a sludge dryer and subsequent incineration in a fluidised bed furnace with state-of-the-art flue gas cleaning.
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sewage sludge mono-incineration plant in Hannover-Lahe, visualisation
Generating heat in an environmentally friendly way: sewage sludge mono-incineration plant in Hannover-Lahe, visualisation

Calculate the savings potential of your sewage sludge

t/a
MJ/kg
% DS

* Assumptions for the OPEX consideration: Depending on the location, the approval situation, process technology and project-specific framework conditions. The presentation is based on a standard S2E concept.

** Assumptions for disposal costs: Cost estimate based on legal framework conditions in combination with S2E's own surveys for the period under consideration 2020 for Germany. Changes are subject to local conditions and changing legal requirements.

*** All information without guarantee

Realise your full potential:

cost savings compared to conventional disposal*
Up to
0
cost savings compared to conventional disposal*

* Assumptions for the OPEX consideration: Depending on the location, the approval situation, process technology and project-specific framework conditions. The presentation is based on a standard S2E concept.

** Assumptions for disposal costs: Cost estimate based on legal framework conditions in combination with S2E's own surveys for the period under consideration 2020 for Germany. Changes are subject to local conditions and changing legal requirements.

*** All information without guarantee

Process

Benefits of the sludge2energy system

Sustainable

Minimisation of transport effort and costs on a permanently secured basis with significant undercutting of all legal limits

Energy self-sufficient

A wide range of municipal sewage sludges can be efficiently and thermally self-sufficiently utilised without external energy supply

Highly flexible

The plant design is individually adapted according to the sewage sludge quantities and customer requirements

Our services

Tailor-made solutions for your individual needs

Comprehensive concepts and feasibility studies for economic and reliable sewage sludge incineration plants

Your reliable partner during all planning stages of your thermal sewage sludge utilisation project - preliminary, approval and detail

Your experienced general contractor for professional turnkey installation and commissioning from a single source

Project example

Energy-optimised sewage sludge incineration in Hannover-Lahe

enercity Contracting GmbH has also opted for the disposal path of thermal sewage sludge utilisation: At the beginning of 2020, sludge2energy GmbH – a joint venture of HUBER SE and WTE Wassertechnik GmbH – was commissioned as general contractor with the planning and turn-key construction of a mono-incineration plant for sewage sludge in Hanover-Lahe.

Both mechanically dewatered and externally fully dried municipal sewage sludge are to be utilised in the plant. The total capacity is 30,000 tonnes of dry matter per year. This corresponds to a volume of about 130,000 tonnes of dewatered sewage sludge with a dry matter content of about 22 % DS.

The main process components of the plant are a HUBER Disc Dryer RotaDry®, the S2E Fluidizer –  a stationary fluidized bed furnace – including boiler, a backpressure steam turbine for optimum power utilisation with maximum flexibility in plant operationand a flue gas cleaning system, which ensures full compliance with the permissible emission limits.

The premise in the planning and realisation of the Hannover-Lahe plant is, in addition to thermal and electrical self-sufficiency, the maximum possible extraction of environmentally friendly generated heat, from which approx. 5,000 households are to benefit via the regional district heating network.

The planning phase has already been completed and the construction work is currently being carried out. Regular operation of the plant is scheduled to start as early as the turn of the year 2022/2023.


Plant features:

  • Optimised, maximum district heat extraction
  • Adapted contaminant management
  • Thermally and electrically energy self-sufficient

If you have any questions, please do not hesitate to contact us! We are always open to your enquiries and want to offer you the best possible support for your projects and requirements.