Fredericia, DK

Plant sheet:

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Plant capacity and performance:

• 8,000 metric tonnes DS/year	• 30 % DS dewatered cake
• 2 x 2,000 m³ digesters	• Pasteurized cake with >40% vol. reduction
• 2-reactor Cambi THP	• Doubling of biogas production
• Cogen: Electricity + steam	• Doubling of digester loading

The Fredericia Plant (420,000 p.e.) is located about 200 km west of Copenhagen and is
owned by the Municipality of Frederica. The capacity of the digestion plant was limited to
4,000 dry tonnes per year and only primary sludge was digested.

However, more than half of the sludge produced was activated or secondary, which had to be
dewatered undigested and treated by composting at another site. By implementing Cambi THP
the plant now digests all their sludge and biogas production has increased by more than 100%.

The benefits of the Cambi process are:

• Ability to digest all their sludge including secondary sludge
• > 9% DS sludge feed to digestion
• Product that meets Danish regulations for pasteurised sludge
• Half the volume of sludge for disposal compared to before situation
• Twice the biogas production and lower H2S content

Where to find the plant:
Fredericia Spildevand A/S
Røde Banke 16
7000 Fredericia
DENMARK