Sludge and Biosolids management

biosolids management Veolia Water Technologies
biosolids management anaerobic digestion
Continuous thermal hydrolysis.

Sludge and biosolids management is our job !

Managing the increasing sludge volumes generated by municipal and industrial water and wastewater treatment processes is a major environmental challenge worldwide.

At Veolia Water Technologies, we see sludge not as a waste but as a potentially valuable resource. We apply our global technological leadership in sewage treatment to help our clients extract valuable biosolids and produce agriculturally-beneficial byproducts. By implementing biosolids management we help municipalities to convert sludge into energy and offset wastewater treatment plant operation costs.

Our designs minimize sludge generation in the initial phases of water and sewage treatment. For sludge that remains after recovery, we minimize weight and volume and remove harmful substances prior to disposal. Our sustainable water and sewage treatment solutions meet rigorous health and environmental standards.
Residuals 2019
8 - 9 May, 2019 - Fort Lauderdale, Florida, USA

Residuals & Biosolids Conference & Trade Show.
Technologies we apply to treat and leverage value from sludge include:
  • Exelys and Biothelys, our thermal hydrolysis solutions
  • Anita Range for sidestream treatment of high-ammonia loaded effluents
  • Biocon and Biocon ERS, low-temperature thermal drying
  • Solia greenhouse solar sludge dryer
  • Pyrofluid, sludge incineration, energy recovery and ash recycling
  • Athos, hydrothermal oxidation for sludge reduction
With over 150 years of experience and 135 business units around the world, Veolia Water Technologies is a leading expert in custom-designing and constructing sludge treatment solutions for municipal water and wastewater treatment plants.
 Cities that have looked to Veolia for advanced sludge treatment options include Paris (France), Hong Kong and Qingdao (China), Saint Petersburg (Russia), Krakow (Poland), Brussels (Belgium) and Buffalo (New York).

Our innovative Exelys™ technology represents the next generation of biosolids thermal hydrolysis. By concentrating the matter to be treated, the volume to be heated is reduced yielding:


20-40% more biogas than conventional digestion


Up to 50% more capacity for existing digesters


More about our Sludge and Biosolids expertise

biosolids management veolia water technologies Marquette-les-Lille case study
Read our case study about  one of the largest wastewater treatment plant in France and its sludge treatment process.
City of Juneau awards Veolia a contract for BioCon 
sewage treatment pyrofluid
Learn more about sludge incineration, energy recovery and ash recycling.



Veolia Water Technologies has over 130 business units worldwide, ensuring our municipal and industrial clients receive local service adapted to their market and culture.