For 30 years ZWT group has been the reliable partner for municipalities, associations of communes and operators, when economical solutions are required in water and waste water management.

The head office of the company is based in Bayreuth, Germany – in the center of Europe. From here we act nationally and internationally in selected markets.

ZWT
your
national
and
international
partner
for
waste water management
Biocos®
Learn more about our
3 or 4-phase biocos systems
Advanced
Waste Water
treatment
process
The patent registered BIOCOS®-wastewater treatment process represents an effective advancement of the conventional activated sludge system and the sequencing batch reactor system.
Optimized sludge-water separation and return sludge conveying: The common final clarifier with scarping unit and return sludge pumping station including related pipe works is replaced by two sedimentation and circulation reactors.
Based on a special modular system, waste water treatment plants with sizes ranging from 500 to 500,000 PT can benefit from the energy saving process design.
BIOCOS®-System technology - an economical alternative to conventional biological waste water treatment.
Know-
How
The member of our team have gaind a specialized know-how in process design, civil works, mechanical equipment as well as electrical engineering, instrumentation and control systems.
Services
The permanent and reliable operational availability is always in the centre of attention.
By means of preventive services the continued availability of your system will be improved and ensured on a sustained basis. Our long-term customers appreciate short reaction time and fast implementation of all our service performances.
High local value added with BIOCOS® system technology
By means of preventive services the continued availability of your system will be improved and ensured on a sustained basis. Our long-term customers appreciate short reaction time and fast implementation of all our service performances.

Furthermore, we are your reliable partner throughout the lifetime of your systems in all issues concerning maintenance and spare parts service as well as optimisation of the operation and performance. Our team of experts is prepared to advice you in all process related matters as well.

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  • Engineering of BIOCOS® system technology
  • Supply of BIOCOS®-key components
Grafik-compressor
Local company
  • Engineering of the whole wastewater treatment plant except biological treatment
  • Supply of concrete construction
  • Supply of steelworks
  • Supply whole components for wastewater treatment plant except BIOCOS®-key components