Skip to main content

Cutting-edge technology for a circular economy
Photo of T-Park EcoFluid BFB boiler at Tuen Mun, Hong Kong, China

EcoFluid BFB boilers for sewage sludge mono-incineration

Cutting-edge technology for a circular economy – utilization of sewage sludge with ANDRITZ EcoFluid boilers has a proven track record. From municipalities to megacities, ANDRITZ offers the ultimate solution for each sewage sludge mono-incineration plant.

ADVANTAGES

  • Suitable for all sewage sludge qualities
  • High combustion efficiency
  • Low emissions
  • Very compact standard design
  • Short erection lead times
  • Low maintenance costs
  • High availability

Photo of T-Park EcoFluid BFB boiler at Tuen Mun, Hong Kong, China

World’s largest energetic utilization of sewage sludge in mono-incineration plant.

T-Park / Tuen Mun, Hong Kong, China.

Resource recovery and environmental safety

Mono-incineration of municipal sewage sludge is increasingly adopted in sustainable waste management. It eliminates contaminants such as PFAS, microplastics, heavy metals, and pathogens, while enabling phosphorus recovery from incineration ash – a critical, non-renewable resource.

ANDRITZ offers EcoFluid Sludge technology with two bubbling fluidized bed combustion concepts:

  • Adiabatic furnace + waste heat steam generator
    Optimized for smaller plants with lower fuel heat input.
  • Integrated combustion chamber and steam generator
    Designed for large-scale installations, providing higher thermal efficiency and compact layout.

Both solutions ensure stable operation, high combustion efficiency, and compliance with stringent emission standards.

3d rendering of EcoFluid sludge adiabatic boiler

Adiabatic EcoFluid sludge boiler

3–5.5 MJ/kg / 10,000–60,000 tDS/a

3d rendering of integrated EcoFluid sludge boiler

Integrated EcoFluid Sludge boiler

3.5–14 MJ/kg / 50,000–120,000 tDS/a

Standardized for maximum efficiency

A key advantage of EcoFluid Sludge technology is its modular and standardized design. This approach ensures adaptability to current project requirements while remaining flexible for future market developments. Standardization simplifies decision-making, reduces complexity, and leverages decades of ANDRITZ expertise in bubbling fluidized bed technology.

Benefits of standardization:

  • Cost efficiency across all phases
    Modular sizing and in-house steam generator manufacturing enable high prefabrication levels, reducing lead times and erection costs.
  • Optimized engineering and execution
    Standardized components combined with ANDRITZ’s deep value chain ensure streamlined workflows and minimal project durations.
  • Proven reliability
    Every customer benefits from established designs and robust project management competencies.

This approach delivers predictable performance, economic viability, and scalability for both small and large installations.

Efficient and environmentally sound

EcoFluid Sludge technology is based on staged combustion, allowing precise adaptation to project-specific requirements. Primary and secondary air injection ensures complete combustion, while recirculation gas maintains constant fluidization for maximum operational safety.

Key performance highlights:

  • Lowest emission levels
    Proven in numerous reference plants, consistently below current regulatory limits for NOx, CO, and total organic carbon (TOC).
  • Future-proof design
    Optimized for compliance with stricter emission standards anticipated in the coming years.
  • Operational reliability
    Stable fluidized bed conditions and tailored combustion control deliver high efficiency and safety.

This combination of efficiency and environmental compliance makes EcoFluid Sludge a robust solution for sustainable sludge management.

Full-scope capability

Beyond combustion with EcoFluid Sludge, ANDRITZ provides all technologies required for a complete sewage sludge mono-incineration plant. This includes in-house solutions for dewatering, drying, and flue gas cleaning, as well as advanced automation and digitalization. Close collaboration with trusted sub-suppliers for key components ensures maximum disposal security and compliance with the strictest environmental standards.

Our turnkey approach delivers:

  • Optimized plant economics through integrated design and proven processes.
  • High reliability backed by decades of experience and strong project management.
  • Future-ready solutions tailored to individual customer requirements.

Municipalities across Germany and major cities like Shanghai already rely on ANDRITZ for efficient thermal and energetic sludge utilization.

ANDRITZ technology powers the world´s largest sludge treatment plant

Optimizing the treatment of sewage sludge

ANDRITZ provides modular plant solutions for treating sewage sludge from large municipalities.

Read more
Hallein_014_2008_Web)

EcoFluid BFB boilers

Based on Bubbling Fluidized Bed (BFB) technology for producing steam and electricity from solid fuels such as renewable biomass and alternate fuels such as sludge, Refuse-Derived Fuel (RDF) and residues.

Read more
BFB EcoFluid boiler at E.ON Blackburn Meadows Renewable Energy Plant, UK

Thermal power

Turbo generators for thermal power plants, power generation systems for the efficient use of traditional fossil fuels as well as biomass, process gases, black liquor, and refuse-derived fuels.

Read more
002 2318 FotoBehrendt

When the pressure is on

A logistical challenge and pioneering technology: the Waste-to-Energy plant at Aschaffenburg is a success story drawing on a wide range of ANDRITZ competencies, including the flexibility to manage a very compact site.

Read more