ANDRITZ to supply sewage sludge mono-incineration plant to Germany

With this plant, to be built at the Port of Hildesheim, KNRN will ensure the reliable disposal of sewage sludge and enable the recovery of valuable phosphorus.

ANDRITZ convinced us with a technically advanced concept that is exactly tailored to our needs. We are very pleased to have ANDRITZ as a strong, internationally renowned technology partner at our side for the joint implementation of this project, as it involves the realization of a plant with the lowest emissions and highest environmental standards, while ensuring high economic efficiency remarked Dr Jens Manthey, Managing Director of KNRN.

ANDRITZ will supply equipment for sewage sludge reception, conveying, drying including vapor condensation, and incineration with an adiabatic EcoFluid bubbling fluidized bed (BFB) boiler system.

The scope of supply includes a multi-stage flue gas cleaning system, steam turbine, generator, water-steam cycle, and additional auxiliary systems, along with the engineering, supply, erection, and commissioning of the main equipment.

The plant is scheduled to begin operations in December 2027, and the value of the contract has not been disclosed.

Heat, power, and SSA

The highly efficient, state-of-the-art plant with a capacity of 33,500 tonnes of dry matter per year will burn sludges from currently 21 municipalities in Lower Saxony, enabling a resource-efficient and environmentally friendly disposal in compliance with the German sewage sludge regulation (AbfKlärV).

Mono-incineration of sewage sludge produces sewage sludge ash (SSA) from which phosphorus can be recovered.

As phosphorus is an essential but limited and non-renewable resource, the regulation requires its recycling from sewage sludge.

The steam generated by the incineration process will generate electricity for the public grid and heat for the local district heating system.

Winning this tendering procedure demonstrates our ability to meet the needs of our customers with our cutting-edge technologies. We are very excited to collaborate with KNRN to implement this project and make a significant contribution to a circular economy, said Benjamin Klammer, Project Manager, Sales at ANDRITZ.