Norway Drammen Lindum

Norway, Drammen Drammen

Lindum

The Drammen biogas plant is located close to the Drammen fjord and collects sewage sludge from municipalities around Drammen, together with some grease and septic waste.

Lindum’s main objectives at the Drammen plant were to generate biogas and produce safe biosolids. To achieve these goals, a Cambi thermal hydrolysis system was installed as pre-treatment before anaerobic digestion. Incoming primary sludge is initially dewatered to approximately 25% dry solids, then pumped sequentially into the pulper and heated with steam recycled from the process. It is then pumped into high-pressure reactors, where hydrolysis at high temperature (160˚C) and pressure (5-6 bar) occurs. Due to thermal hydrolysis, the biosolids are pasteurized and can be used on agricultural lands. The biosolids product is highly sought after because it is affordable and can replace artificial fertilizers.

The plant produces large amounts of biogas that go through an upgrade system to be used as compressed biogas for public transport in rural areas. The plant was completed in the spring of 2012 and has since been operating every day, 24 hours a day.

Lindum Group has operations in large parts of eastern Norway and parts of western and southern Norway.

Cambi solution CambiTHP® - B6

Number of reactors 2

Status In Operation

Year of commissioning 2012

Feedstock type Primary sludge

Population served 410,000 p.e.

Plant design capacity 6,000 tDS/yr

Digester capacity 3,400 m3

Biogas utilisation CBG for transportation

Biosolids use Land application Installation, commissioning, senior supervisor supplied Services by Cambi for one year, training