Thermal Hydrolysis

A complete sludge treatment reduction process which combines high pressure and temperature.

A complete sludge treatment reduction process which combines high pressure and temperature.

Thermal hydrolysis heats up thickened sludge at between 150 and 165 degrees Celsius, with a pressure of around seven bars. This improves the biodegradability and viscosity of the sludge, doubling the feed concentration in the digester and enhancing biogas production.
Thermal hydrolysis achieves enhanced treated sludge and improves the final sludge cake dryness. The treated sludge can then be recovered for agricultural use. The increased biogas produced by the anaerobic digestion can be used for producing green electricity or can be injected after treatment in the gas grid. 

Benefits include:

  • Double digester capacity
  • Enhanced biogas production for electricity production or grid injection
  • Enhanced treated sludge produced
Water Treatment Products

We have a complete portfolio of water treatment products and services to help you achieve a value-for-money solution alongside reliability, expertise and outstanding support.

Thermal hydrolysis and anaerobic digestion for sludge reduction and to increase odourless biogas production.

Innovative continuous sludge-reduction solution that combines thermal hydrolysis and anaerobic digestion.

Water Treatment Applications

We design and manage innovative solutions for a wide range of water and wastewater treatment applications.

Environmentally friendly biodigestion that creates energy from waste.

Treatments for sludge reuse/disposal to remove water, reduce volume and conserve recovery potential.


Our teams of industry experts work with you to supply the water technologies and services you need to overcome challenges in your market.

Delivering compliant process and waste to recovery water for pharmaceutical/cosmetic needs.

Solutions to design, build, maintain and upgrade municipal water and wastewater treatment facilities.

Delivering ingredient water and waste to resource services in the food and beverage industry.

Water treatment for the automotive industry to ensure business continuity and operational control.

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