BioChop processing unit safely breaks down whole salmon for biogas, pig feed, and more

Danish pump and mixing solution provider Landia installed its fourth BioChop unit – a chopper pump designed for the efficient processing of fish into silage – for Faroe Islands-based salmon farmer P/F Luna at the beginning of this month. 

The BioChop pump will offer P/F Luna’s Vestmanna operation on Streymoy, Faroe Islands increased biosecurity, and was chosen for its ease of use, longevity, low operating costs, and silage production quality. Fish silage, as defined by the Food and Agriculture Organization, is “a liquid product made from whole fish or parts of fish that are liquefied by the action of enzymes in the fish in the presence of an added acid.”

P/F Luna’s new processing unit consists of a long-shaft, acid-resistant chopper pump responsible for the entire process of breaking down and mixing whole salmon, said Landia in a press release. Each component of the BioChop that comes in contact with the salmon silage is produced using acid-resistant materials to protect them from the additive formic acid mixture, the equipment provider added.

The pump, which is five cubic meters in size, features a programmable logic controller (PLC) as well as a separate acid-dosing pump to ensure proper pH balance within the machine’s tank. The silage produced by the unit will be transported by P/F Luna to a storage facility on the Faroe Islands and then shipped to Norway, where it could, in turn, be used for biogas production, as a starter feed for piglets and chickens, or as an ingredient for pet food, Landia noted. 

This isn’t the first time Landia and P/F Luna, which markets its salmon under the HiddenFjord brand, have worked together. In 1997, the salmon farmer received Landia’s first acid-resistant BioChop five-cubic-meter silage tank. Landia has also previously provided the company with chopper pumps and mixers for its integrated factory trawlers. 

“The pumps chop the fish by-products, whilst the mixers ensure that processed silage stays homogenous in tanks to make unloading quick and simple,” Landia said.

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