Worldwide

Regional sites

Subsidiaries

Techno Business Units

  • ANOXKALDNES
  • AQUAFLOW
  • BIOSOLIDS
  • BIOTHANE
  • EVALED
  • HYDROTECH
  • IDRAFLOT
  • IDRASCREEN
  • PMT

Osland Settefisk

Business case listing

The facility consists of two departments: Start-feeding and Grow-out. Each department has its own separate water treatment system, running on clean freshwater.


In addition to this, the facility has vacuum-run equipment for dead fish transport and a sludge treatment system to dewater the waste sludge. All the equipment is under observation via cameras placed in each department hall.

Major components:


The Kaldnes® RAS water treatment system consists of four major process components:

Mechanical Particle Separation

The Hydrotech™ drumfilters remove particles and suspended matter from the water, both from fish feed and fish feces

Biological Filtration

Dissolved and particulate organic matter and ammonia are degraded by bacteria and microorganisms in a two-stage Kaldnes® MBBR biofilter.

Degassing

Carbon dioxide produced by fish respiration is removed in a centralized CO2  degasser. 

Automation

The entire facility, including the water treatment systems, lighting, oxygen and heat, is monitored and controlled by Veolia’s operating control system. 

Footprint

The two Kaldnes® RAS systems together have a capacity of 1.556 kg daily feeding, with a total hydraulic capacity of 2.875 m3 /h. They occupy a footprint of 176 m2  (including the switchboard) which is a mere 12% of the total hall area.

 

Key Data

 

Parameter Start-feeding Grow-out
Total fish tank volume 339 m3 1.272 m3
Maximum biomass 11.875 kg 63.617 kg
Maximum feeding  356 kg/døgn 1.200 kg/døgn
Recirculating water flowrate 675 m3/time 2.200 m3/time

 

 

Client: Osland Settefisk AS
Startup: 2016

Challenge:
To build a turnkey RAS facility with a highly constrained footprint.


Solution:
Kaldnes® RAS consisting of Hydrotech™ Drumfilters, Kaldnes® MBBR, central CO2  degasser and circulation pumps. The facility is monitored and controlled by VA-operator, a fully automated control program

Design capacity:

Production:
2,5 million smolt per year

Maximum feeding:
356 + 1.200 kg per day

Fish tank volume :
339 + 1.272 m3

Operating conditions:
CO2 ut av kar: ≤15 mg/l
TAN: ≤ 2 mg/l
NO2-N: ≤ 0,5 mg/l
NO3-N: ≤ 70 mg/l
Nitrogen saturation: ≤ 100 %

Related products

Berkal™

Berkal™ disc filtration systems remove contaminants such as fibers, grit, sand and algae.
Filtration
Contact

Duo Eclipse™

In many industrial processes, any dissolved salts in water can cause problems. Removing all the dissolved salts from water is called deionisation or demineralisation. Duo Eclipse™ two stage deionisers remove up to 98% of total dissolved solids and will typically produce water with a conductivity of less than 20 μS/cm. Flow rates from 0.25 to 4 m3/hr.
Ion exchange & Deionisation
Contact

Escalator™

Perforated stainless steel screen panels are carried on heavy-duty chains and incorporate holes of 6 mm (1/4'') or 3 mm (1/8'') diameter giving fine screening in any direction.
Screening and Separation
Escalator™ Brochure (400.94 KB)
Contact

Hydrotech Drumfilter

Patented mechanical self-cleaning drumfilter for municipal and industrial recovery water applications.
Filtration
Contact

Kaldnes™ RAS

Serving the Aquaculture Industry
Aerobic Wastewater Treatment
Contact

L’EAU CLAIRE™

Veolia’s L’Eau Claire™ is an up-flow deep-bed media filtration technology designed for the effective removal of fine solids, colloidal silica and color.
Filtration
L’EAU CLAIRE™ Brochure (EN) (357.58 KB)
Contact

Mectan™

The Mectan™ vortex grit system is a circular chamber that takes full advantage of the tangential inflow velocity along the peripheral wall of the chamber to assist in the grit removal process.
Screening and Separation
Mectan brochure New (857.23 KB)
Contact

MUSLING®

The MUSLING® flotation equipment was developed during the 1980's originally for removing fat and oil from fish-processing sewage outlets. Now, after more than 20 years experience, the MUSLING® has become synonymous with the treatment for both industrial and communal sewage systems.
Clarification and Flotation
MUSLING® Brochure (1.23 MB)
Contact

OPADEN™

The Opaden compact unit removes nitrates to produce potable water for small size cities
Ion exchange & Deionisation
Contact

ROTOPAC™ Type RPW

The Rotopac™ is a simple device for dewatering and compacting the screenings collected on bar screens and fine screens.
Screening and Separation
ROTOPAC™ Brochure (EN) (790.92 KB)
Contact

SAM™ Type GDS

The SAM™ grit dewatering screw is designed to provide easy and efficient separation of the grit from the liquid matrix, using an air or cyclone separator.
Screening and Separation
SAM™ Type GDS Brochure (EN) (626.24 KB)
Contact

WHITTIER FILTRATION HRD Media Filters

Veolia’s High Rate Downflow (HRD™) multimedia filtration produces an extremely high quality effluent thanks to unmatched performance.
Filtration
HRD Media Filters Brochure (238.31 KB)
Contact