Project in Progress

The contract for the planning and construction of the sewage sludge incineration line at the Utena wastewater treatment plant was awarded in March 2019. The entire project includes the construction of the sludge incineration plant and the extension of the existing sewage treatment plant.

In this construction project in the north-east of Lithuania, a sludge incineration plant with a capacity of 9,076 t of dewatered sewage sludge is being built as part of the sewage treatment plant expansion. The sludge2-energy GmbH supplies the plant for thermal sludge utilization.

Apart from the HUBER Belt Dryer BT6 for partial-flow full drying of the sewage sludge and the stationary fluidized bed, the S2E Fluidizer, the plant is characterized by its effluentfree flue gas cleaning. It consists of a cyclone as pre-separator, conditioned dry sorption by injection of sodium bicarbonate and activated carbon, and a downstream fabric filter. This ensures compliance with the required emission limits at low investment and operating costs.

A hot water boiler connected to the furnace transfers the heat released in the combustion process into the hot water circuit, so the heat can be used as energy, for example for the thermal heat supply to the dryer.

The engineering of the incineration plant is already completed and installation started in autumn 2021. The warm commissioning of the sewage sludge mono-incineration plant with a fuel thermal capacity of 0.68 MW is scheduled for April 2022. Regular operation of the thermal utilisation is planned for June 2022.

Plant features

• Security of disposal for the region
• Wastewater-free flue gas purification
• Adapted design for municipal requirements