Green Gas Grid Injection

Project Description

Water company Waternet is responsible for the supply of drinking water and treatment of sewage in Amsterdam and surrounding areas. One of the existing sewage treatment plants, is enhanced with a biogas upgrade plant to produce Green Gas. Annually, this Biogas Upgrading System will upgrade 14,7 million m3 raw biogas into 9,7 million m3 upgraded biomethane, which will be injected into the national gas grid and supplied to renewable natural gas fuel stations in Amsterdam.

DMT Environmental Technology is responsible for the supply and 10-year operation of the biogas upgrade installation. CSH delivered two large oil injected rotary screw compressor packages, which we installed in DMT’s biogas upgrade enclosures.

Customer / End user:
DMT Environmental Technology B.V. / Waternet

Amsterdam, The Netherlands

System capacity:
2x 3180 Nm³/h

Differential pressure:
16.5 bar(g)

Scope of supply:
Two (2) skid mounted electric driven oil injected rotary screw compressor packages, each comprising of:

  • Bauer Rotorcomp compressor, type EVO76G
  • Electrical driver EexnA with frequency drive
  • Inlet and discharge filters
  • Gas-to-Gas super heater
  • Closed loop Gas-to-Water discharge cooling system
  • Condensate separator
  • Oil cooling system with waste heat recovery
  • Activated Carbon tower
  • PLC-based control system for automatic compressor operation
  • Suitable for hazardous area ATEX Zone 2, group IIB, class T3
  • Factory Acceptance Test with site start-up, commissioning, and Site Acceptance Test

3D impression of Biogas compression installation including ancillary equipment

Compressor skid installed inside biogas upgrade enclosure

Entire biogas upgrade installation hoisted with overhead cranes at CSH’s workshop for loading on a truck