 The Shallow Raceway System (SRS)
On a global scale, aquaculture is expected to be one of the
fastest-growing industries in coming years, and a significant part
of this expansion is expected to take place on land. Future
land-based fish farming may take place in conventional farming
system or it can take advantage of the development of new techniques
for land-based farming.
Since the early 1990s, Akvaplan-niva has drawn experience from
its R&D activities to provide scientific rationale for the
development of a hyper-intensive aquaculture system (the Shallow
raceway system, SRS). Shallow raceways may be organised in racks
combined with reuse or recirculation of seawater and with optional
rearing at low and intermediate salinities. The most obvious
advantages of new hyper-intensive farming systems are far better use
of resources and easy implementation of automation that promote
lasting competitiveness.
Shallow raceways in racks will make it possible to rear fish in
as much as ten separate levels. In this new concept of land-based
fish farming, special emphasis is put on rational utilisation of
resources, natural resources included. As an illustration, a
land-based production of 10,000 tons will require approximately
400,000 m2 of industrial buildings. This represents is a huge
challenge to the industry. With SRS technology, it may be possible
to reduce the area needed to less than 20%, or to produce the same
quantity, i.e. 10,000 tons of fish and shellfish, on less than
100,000 m2. The hyper-intensive concept is also expected to reduce
the consumption of other contributing elements like feed, water,
oxygen, energy, and work-load while increasing the production volume
per employee.
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