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References

Upgrading and modernization of sludge treatment facility and digestion

WWTP Drachten

Scope

  • Design and Construct (UAV-gc)
  • Process technology design
  • Construction design
  • MEICA design
  • Construction civil works
  • Installation of MEICA equipment and works
  • Start-up & Commissioning
  • Plant Proving period
  • Maintenance

Technical Data

  • CHP system for 205kWe
  • Biogas pre-treatment 100Nm3/hour
  • NOx emission <340 mg
  • Sludge handling capacity 2,100 ton dry solids / year
  • PS / WAS = 42 / 58 %

System & Technologies

  • Primary sludge pumping station to PS to digestion
  • Thinkening WAS with belt thickeners, including PE dosing and WAS feed pumps to digestion
  • Gas treatment unit 100Nm3/hour for desulphurization and siloxane removal
  • Senergie 205 CHP unit with Liebherr gas engine
  • Gas quality measurement CH4, CO2, H2S and O2
  • Control panels and electrical switch boards, including connection to plant SCADA system

Special Features

  • Tender was awarded at Best Economic Value Proposition criteria
  • At completion the plant reaches 70% energy self -sufficient operating conditions

General Data

Client
Wetterskip Fryslân, The Netherlands

Completion
September 2017

Contract value
EUR 2.2 million