About Us

For over 15 years we have been dealing with ORGANIC WASTE.

The POTENTIALS of organic waste are main issue in our business unit BIOGAS TECHNOLOGY. We successfully design, build and maintain biogas projects on both a national and international stage. A key factor for success is the efficient separation of non-digestible fractions of organic waste both during pretreatment as well as in the process. Numerous reference projects verify the high efficiency of the FITEC process and the FITEC components.

The RISKS arising from organic, inorganic and radioactive waste are topics of our business unit SOIL AND GROUNDWATER PROTECTION. For example, we support operators of landfills during planning, approval and execution of securing and remediation measures. The powerful software "DESi variation", tested for many years, is basis for our calculations. With "DESi variation" we are able to reliably determine maximum possible loads (emission limits) into groundwater for any periods of time.


The Fitec process

Three stages to maximum efficiency

The FITEC process for the recovery of organic waste eliminates contaminants and impurities in three stages and is therefore highly promising:


Stage 1: preliminary treatment

At first the organic waste is shredded and - if necessary - is mixed with process water to an average total solids content < 25 %. Afterwards most of the contaminants (~ 80 %) are separated by a hydraulically operated press. For a maximum seperating capacity the contaminants are heated up to 70 °C and then squeezed again. The non-digestible (solid) fraction with a total solids content of more than 50 % could be for example composted, dried or directly disposed.

The digestible (liquid) fraction is pasteurized with a double-tube heat exchanger (1 hour at 70 °C) and then one or more digesters are feeded. In the digesters biogas is generated from the digestible fractions. The biogas is used for the production of heat and power at a combined heat and power plant.


Stage II and III: Precision treatment

Second and third stage of the separation of contaminants takes place continuously within the digester. Due to the biological degradation non-digestible solids like pieces of eggshells or glass, bone splinters etc. settle at the digester bottom. A floor grit cleaner removes sinking contaminants. Floating contaminants like plastic or cork pieces or similar contaminants are discharged by a surface floating layer cleaner. Thus digester contamination is prevented. Operational reliability is ensured.

The remaining digestate can be used as a liquid fertilizer. Alternatively a solid-liquid separation produces a solid digestate (compostable) and a centrate. The centrate can be further purified by water treatment (e. g. SBR technology).


Your anaerobic digestion partner of choice!

  • Over 15 years of experience in both national and international project development
  • Planning according to your needs
  • Numerous reference projects demonstrate the high performance of the FITEC process and of FITEC components
  • Enormous flexibility creates security of investment even with variable inputs
  • Modeling and process simulation – optimal system design
  • Own (test) plant at the FITEC company site
  • Own production of the special components


Our planning services include

  • Analysis and evaluation of the intended raw materials
  • For raw materials with impurities > specification of the processing technology
  • Selection and dimensioning of process engineering
  • Energy and mass balances


Typical raw materials

The FITEC system process allows the treatment of a wide range of raw materials:

  • Food waste (e.g. restaurants)
  • Packaged and expired foods
  • Organic waste from private households
  • Manure from livestock farming


Benefits of the Fitec process and components

  • Evaluation of the digestibility - With our BIOTIP software we provide a comprehensive simulation of the entire biogas process.
  • From the beginning you get reliable information which waste in combination with which plant technology guarantees a stable biogas production and what is the cost effectiveness of the intended plant.
  • Robust technology from our own production and assembly, applied in our biogas plants that have proven during many years of operation. Examples include separation technology, systems for removal of contaminations, pasteurizer systems, measurement and automation technology.
  • We provide the conditions for a sustainable, reliable system operation.


Fitec services

  • Project management, construction supervision
  • Provision and installation of system components
  • Custom-made automation technology
  • Support during commissioning
  • Process (remote) monitoring


A focus on reliability

  • Components that are of critical importance for the reliability of plant operation and thus for the economic success.
  • Efficient separation of the non-digestible fractions of the waste both in the pre-treatment stage as well as in the process.


Our services for ongoing support

  • Biological process consulting
  • Evaluation of raw materials
  • Service on FITEC components
  • Expansion planning

FITEC - your  competent partner!


Contact Fitec Environmental Technologies Inc.

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