Vilnius, Lithuania


	Plant sheet:	Printable pdf

Timeline/Hand over: Beginning of 2010	Capacity: 23,000 tonnes of DS/year
Raw material: Mixed primary and secondary sludge, some imports	Biogas utilization: Combined heat & power (CHP) and low- temp. drying
Biosolids utilization: Dewatered and dried cake to agriculture	Digestion: 3 x 3700m³ digesters, incl. Cambi fin-fan coolers

On 29 September 2008 the German water experts WTE Wassertechnik GmbH
together with its Norwegian partner Cambi AS signed a major order for
the construction of a sludge treatment plant in the Lithuanian capital Vilnius.

By the introduction of a thermal hydrolysis plant, which Cambi will be fully
responsible for, the highly efficient sludge treatment facility ensures a pasteurised
and odourless final biosolids product. The resulting high digestion rate and high
dry solids feed give only 1/3 – ½ the digester volume of conventional systems.
In addition the thermal hydrolysis plant will lead to significantly increased biogas
production and reduced final product volume, both major benefits for sludge drying.

The sludge drying will be low temperature belt dryer running on thermal energy from
the combined heat and power station. This is the first such plant in the world.

The Consortium will construct one of Europe’s most advanced sludge treatment
plants for a total invest volume of more than 200 million Litas (approx. 58
million EUR). The scope of works includes sludge thickening, digestion,
Cambi fin-fan coolers, sludge dewatering and low-temperature drying as well
as the utilisation of the produced biogas in a combined heat and power station.