Sector Utilities
Project type Refurbishment
Services provided Design
Product / system manufacture
Product / system supply
Installation
Year completed 2009
Project location Yorkshire and The Humber
Client Yorkshire Water
 
 

Challenge

Yorkshire Water were aiming to generate electricity from the discharge flows from its Esholt sewage treatment plant. 

Solution

In the first project of its type in the UK, Yorkshire Water used screw generators from Spaans Babcock.

The equipment supplied comprised two 2.6m diameter screw generators, each compact in design and weighing more than 20 tonnes. The generators were to be installed in a series, with 2678 l/s flowing sequentially through the two screws over a total fall of around 10m. Approximately 180kW of energy was generated (90kW per screw generator).

Outcome

The electricity generated was transferred back into the mains grid.

Benefits of screw generators include:

  • Low maintenance
  • No pre-screening required
  • Flat efficiency curve
  • Simple control
  • Non-blocking
  • No cleaning required


Challenge

Yorkshire Water were aiming to generate electricity from the discharge flows from its Esholt sewage treatment plant. 

Solution

In the first project of its type in the UK, Yorkshire Water used screw generators from Spaans Babcock.

The equipment supplied comprised two 2.6m diameter screw generators, each compact in design and weighing more than 20 tonnes. The generators were to be installed in a series, with 2678 l/s flowing sequentially through the two screws over a total fall of around 10m. Approximately 180kW of energy was generated (90kW per screw generator).

Outcome

The electricity generated was transferred back into the mains grid.

Benefits of screw generators include:

  • Low maintenance
  • No pre-screening required
  • Flat efficiency curve
  • Simple control
  • Non-blocking
  • No cleaning required


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