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  6. Automation solutions for wastewater treatment with Nereda® technology

Automation solutions for Nereda® technology

Nereda® technology is an innovative, sustainable and cost-effective biological wastewater treatment. The award-winning technology is up to four times smaller than conventional plants and uses the unique features of aerobic granular biomass with excellent settling properties. Festo provides support right from the plant planning phase, and uses pneumatic automation to ensure an exact process sequence.

Nereda® technology is the new modern standard for sustainable and cost-effective biological treatment of urban and industrial wastewater. Unique to the Nereda process is that the bacteria used to purify the wastewater grow in fast-settling granules. All biological treatment processes take place simultaneously in these granules.

The Nereda® technology is basedon a simple 3 step cyclic operation and takes place in one or more Nereda reactors. The duration and the process parameters for the various stages of each cycle are automatically adjusted to guarantee optimum and efficient performance, even when the wastewater quantities, composition and temperature fluctuate.

  • Infeed of the untreated wastewater and simultaneous decanting (displacement) of the purified waste water.
  • In the aeration phase, the simultaneous biological removal of organic, nitrogen and phosphorous compounds takes place.
  • Fast settling phase during which the biomass is separated from the waste water and the Nereda plant is ready for a new cycle.

Festo is a preferred supplier within the Nereda community

Festo provides support with the design of the overall pneumatic system as well as with installation and commissioning. For an optimised compressed air supply, Festo supplies turnkey solutions with control cabinets, compressors, tubing and accessories. Compressed air monitoring ensures efficient and stable processes – and a warranty for the overall system with maintenance agreement is also available.

Maximum energy efficiency to DIN EN ISO 11011

The compressed air system is perfectly sized for maximum energy efficiency and assessed by Festo to DIN EN ISO 11011. This is how you get reliable data for your energy and environmental management and further boost the optimisation potential of your plant.

Expertise and technology from a single source

Control cabinet solutions
For protecting the decentralised automation components from external influences.

MS series
Modular compressed air preparation with numerous configuration options such as pressure regulation and tamper protection.

CPX/VTSA
Valve terminal VTSA for high flow rates for controlling large-volume actuators combined with the electrical terminal CPX for maximum function integration, such as pressure monitoring as well as digital/analogue inputs and outputs.

Features:

  • Condensate drain to maintain the pressure dew point
  • Compressed air monitoring
  • Valve terminal VTSA with Modbus communication
  • Pressure regulation and supply for field measuring equipment
  • LED lighting, heating, and humidity control

Process valve units

Pre-assembled process valve units ensure that the components optimally match one another, make installation easier and give you planning certainty, even in the case ofcustomer-specific solutions.

Compressed air network

A perfectly sized compressed air network is crucial for energy-efficient plants. At Festo, you get everything from a single source, from the compressor and air preparation (e.g. dryer) right up to an extensive selection of tubing and connectors - combined of course with advice from our experts.