Managing biosolids and by-products recovery
Reducing sludge volume and harnessing the resources within
Growing sludge volumes as a by-product of wastewater treatment pose both economic and environmental challenges for local authorities and operators. Regulations relating to sludge disposal are becoming more stringent as volumes increase.
Municipalities seek to reduce sludge volumes, protect the local environment and harness advanced technologies to extract and recover the valuable resources in wastewater.
Innovations in wastewater sludge treatment
Treating sludge to Class A Biosolids
SUEZ has the expertise to treat sludge to Class A Biosolids in line with sludge pasteurisation, as per EPA* 40 CFR 503. Our treatment processes ensure that sludges are free from Salmonella and that 99.9999 per cent of pathogens have been destroyed in sanitation. The high quality final product meets local regulations and standards for sludge end-usage, and can be reused for agricultural purposes.
Eliminating the sludge produced by wastewater treatment
SUEZ’s innovative technologies and processes enable us to recover valuable resources from wastewater sludge such as nutrients, soil enhancers and fertilisers. We are also leaders in recovering biogas from sludge for the generation of renewable energy. Our comprehensive range of solutions help our customers meet and exceed their sustainability goals.
One stop shop
SUEZ is both project manager and water treatment specialist, enabling full control of all stages in the design and build of water treatment facilities.
They trust us
Each year the Allwater Alliance delivers around 140 gigalitres of drinking water to the people of Adelaide from our energy efficient plants.
Making new resources from biosolids
Recovering phosphorus from sludge
Wastewater recovery offers a valuable source of phosphorus, with potential to meet as much as 20 per cent of global phosphorus demand. Our technologies convert the phosphorus present in wastewater into fertiliser products that offer superior slow-release effects over chemical fertilisers. Phosphorus recovery from sludge also offers a valuable alternative to phosphate rock mining for reduced environmental footprint, and reduce maintenance costs through controlled struvite precipitation.
Turning sludge into energy
The biogas arising from the anaerobic digestion of wastewater sludge is a powerful source of energy. SUEZ captures biogas for conversion into electricity and heat to meet the energy needs of wastewater treatment plants, homes and businesses. Refined biogas, known as biomethane, is a sustainable source of green gas for homes and businesses or biofuel to power cars, buses and commercial vehicle fleets.