BIDATEK® offers a solution treatment of urban wastewater based on moving bed (MBBR) technology, built inside 20 and 40 feet sea containers.    Download catalogue


The moving bed technology is based on biomass growth in plastic supports moving inside the biological reactor by the agitation generated by aeration systems (aerobic reactors) or by mechanical stirring systems (in anoxic or anaerobic reactors). The supports are made of plastic material with density close to 1 gr/cm3; this allows them to move easily in the reactor even with filling percentages of 70%.

The biofilm that is formed on the filling walls is more effective than the biological flocculants, which makes the moving bed reactors be smaller in volume than the active sludge. The growth of the biofilm on the support causes the inner layers to enter into anaerobiosis making part of it to peel; this means that required biofilm formation is automatically generated according to the load.

The solids or sludge detached from the support are removed from the system by purging them, not requiring any reactor recirculation. This simplifies the plant operation since the extraction of sludge from the reactor is automatic.

The technology MBBR has the following advantages
over conventional biological processes of activated sludge:
  • Lower volume of the biological reactor.
  • Process of great flexibility, as it allows the volume of the filling inside the reactor to vary.
  • Recirculation of biomass to the reactor is not required, this means that the biomass does not depend on the final separation of the sludge, thus avoiding the usual problems related to sludge sedimentation in conventional processes of active sludge (filamentous bulking, etc.)
  • Operation and control of this type of processes are simple, since no knowledge of the biology of the process is required; it is only necessary to keep the equipment working mechanically, as the system maintains the biomass in the reactor until it is detached from the support.
Applications for this type of wastewater treatment plants:
  • Urban areas, up to 5,000 inhabitants.
  • Hotels, resorts and other tourist facilities
  • Work camps (mines, major works, etc.).
  • Industries
Plastic filling. Formation of biofilm in the plastic support

The solution proposed by Bidatek offers the innovation of having a complete biological treatment inside containerized structures with most of the mechanical and / or electromechanical equipment necessary for its operation. These containerized sewage treatment plants are suitable for wastewater treatment of populations of up to 1,200 equivalent-inhabitants (Model BDTK-C-1200) or analogous volumes of industrial wastewater with similar pollution loads. These plants can be combined in parallel to increase the population to be served.

This solution is offered in the following models
according to their treatment capacity:

Model Equivalent-population Dimensions
BDTK-C-250 250 2991 x 2438 x 2438
BDTK-C-500 500 6058 x 2438 x 2591
BDTK-C-900 900 9125 x 2438 x 2896
BDTK-C-1200 1200 12192 x 2438 x 2896
Our containerized plant solutions with technology
MBBR have the following benefits for its users:
  • Compliance with discharge regulations: robust technology with a great capacity for eliminating contaminants that makes it possible to comply with the most stringent discharge regulations.
  • Compact transport: by using the structure of the container.
  • Minimum civil works: only the deck to place the container and the headworks and pretreatments.
  • Simple assembly: all the elements go inside the containerized structure.
  • Simple commissioning: the unit is pre-assembled and ready to use
  • Simplicity of operation: robust technology with easy operation
  • Centralized operation: general electrical panel included in the structure of the container.
  • Transportable: it is a mobile unit, which allows change of location