Anaerobic Digestion Treatment

A proven and energy-efficient method to treat industrial wastewater.

A proven and energy-efficient method to treat industrial wastewater.

What is anaerobic digestion?

Anaerobic treatment is a proven and energy-efficient method for treating industrial wastewater. It uses anaerobic bacteria (biomass) to convert organic pollutants or COD (chemical oxygen demand) into biogas in an oxygen-free environment. Anaerobic micro-organisms (specific to oxygen-free conditions) are selected for their ability to degrade organic matter present in industrial effluents, converting organic pollutants into biogas (methane + carbon dioxide) and a small amount of biosolids. The energy-rich biogas can then be used for boiler feed and/or combined heat and power (CHP) to produce ‘green’ electricity and heat.

Anaerobic treatment offers several advantages over aerobic alternatives:

  • Low energy use
  • Small reactor surface area
  • Lower chemical usage
  • Reduced sludge-handling costs

Use aerobic treatment after anaerobic treatment to achieve a good treated-water quality for discharge into a water course.

Check out the products and case studies on how Veolia Water Technologies can help with your anaeriobic digestion for your water treament needs. Speak to an expert today

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Water Treatment Products

Treats industrial effluents with high amounts of suspended solids.

Maximises renewable energy production while producing high-quality effluent.

Water Treatment Applications

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

Sustainable & economical wastewater treatment systems. Technologies for safe, environmentally compliant wastewater treatment systems and sewage treatment plant operations.


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.

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.

Optimising quality, waste to energy and water treatment for chemicals/petrochemicals industries.

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