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Category - Solutions

Sludge Treatment for Aquaculture

Norway is the world’s largest producer of salmon and exports to all continents. Much of the salmon production takes place along the Norwegian fjords and also on land. The main challenge in the industry is economic growth combined with environmental responsibility. Norditec helps companies find solutions for sludge management. We collaborate with experts in particle separation, sludge treatment and drying.
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Solution and Process Description

Solutions are developed for dewatering and drying of sludge in land-based aquaculture facilities. The system starts with mechanical filtration of particles smaller than 1 mm, and fibre is removed to simplify mechanical processing. Norditec produces and adapts solutions for the food industry and aquaculture in collaboration with European equipment manufacturers. We have tested all stages of the process for the SDP solution. These techniques can be adapted to biological and chemical treatment plants. RAS recirculating aquaculture systems.

Management of Water Capacity in Sludge Tanks

  • Composition: Typical ratios between total solids (TS) and water content vary from 0.01% to 1%.
  • Consistency: Sludge properties are inherently unstable and show significant character variation.
  • Economic Impact: Requires significant capital investments for effective processing, storage and final disposal.
  • Biological Risks: Active microbial components in the sludge can lead to unpleasant odour and bacterial spread.
  • Hygiene Requirements: Necessity for comprehensive disinfection protocols to ensure safety.
  • Strategic Management: Determination of the most effective and sustainable method for final utilization or removal of sludge.

Summary of Technical Specifications

The process solution consists of several dewatering stages. The project is developed together with the operating personnel to increase the facility's efficiency.

  • 2–4 stages in the dewatering process.
  • Buffer between each treatment stage, monitoring and automation.
  • The system is reliable and continuous.
  • Flotation unit can be recommended during flow peaks.
  • Thickening system for treatment of high solids content.
  • The process is always developed with the help of the internal technical personnel in the customer's company.
  • We offer training for.

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