The environmentally friendly Danish model
fish farms are to be expanded from the current freshwater farms to also include
saltwater fish farms. This requires new technological solutions, which in itself
could become something of an export bonanza. Fish farming is currently one of
the world's fastest growing food industries. Denmark has a long tradition of
fish farming and today is among the world leaders in equipment for green
production, thanks to the development of so-called model fish farms. The
high-tech and environmentally friendly model fish farms use water from
boreholes, rather than from rivers, and are based on water recirculation
technology. This means that the fish farm recycles as much as 95 per cent of the
water instead of merely letting it drain away into the countryside.
Now DTU (Denmark Technical University) Aqua and several of the key
players in the industry are joining forces to take Danish fish farming a stage
further. In order to put large rainbow trout and salmon on the menu as well, the
so-called model fish farms are to be expanded to include the breeding of
saltwater fish as well as freshwater fish and it is to take place inland. The
project is being supported by the Ministry of Food, Agriculture and Fisheries'
Green Development and Demonstration Programme (GUDP). 'The
global salmon market is huge. The production of fish in the aquaculture industry
is increasing in several countries, but so far Denmark has not increased
production significantly, mainly because of environmental restrictions. But why
should the Norwegians produce our salmon if we can do it just as well—and
without compromising the environment?' asks technical project manager Per
Bovbjerg Pedersen, from DTU Aqua in Hirtshals. In order to
increase production in a sustainable and profitable manner, we need cross-
disciplinary collaboration on new technological solutions for breeding fish in
salt water to complement those solutions that DTU Aqua has already helped to
develop within the field of freshwater fish breeding. 'The goal
is to produce more fish, but with the same or even lower emissions of nitrogen
out into the environment. This will be done partly through applying a known
technique in freshwater farming, whereby bio-filters are used to convert the
ammonia excreted by the fish into nitrate. Now the goal is to develop the
technology to do the same with salt water, in order to convert this nitrate into
nitrogen which can be released as a harmless gas. In this way the nitrogen is
removed safely from the water,' explains Per Bovbjerg Pedersen.
In a four-year project supported by the Ministry of Food, Agriculture and
Fisheries' Green Development and Demonstration Programme (GUDP), DTU Aqua, in
collaboration with key industry players, is to develop technology to enable
large rainbow trout to be farmed inland in salt water. After two years, the
project will be expanded to test the feasibility of farming Atlantic salmon in
inland saltwater fish farms. DTU Aqua is responsible for the
professional management of the project, in particular the environmental impact,
water quality parameters and the development and optimisation of cleaning
technologies. The work is being carried out at the North Sea Science Park in
Hirtshals in collaboration with representatives from all relevant parts of
industry including the leading Danish food producer Biomar and the largest
breeding, processing and sales company AquaPri. The goal in the
long term is not only to create a basis for the Danish production and export of
sustainably produced saltwater fish: the actual technology itself will have
equally strong export potential, Per Bovbjerg believes.
'Denmark is already a world leader in water recirculation technology and model
fish farms, thanks to our unique composition of components drawn from our
experience in water recirculation techniques. The aim is to further exploit and
expand the Danish position in the field of water recirculation by combining it
with breeding techniques, equipment and complete plant solutions for saltwater
fish farming,' says the technical project manager from DTU Aqua.
A comprehensive measurement and documentation project to monitor the
environmental impact of model fish farms was started in 2005. The project was
based among other things on DTU Aqua's know—how about fish farming systems,
including water recirculation technology. Today, model fish
farms are located in large concrete plants on the traditional fish farms sites.
But as the model fish farms do not need the water from the streams, the streams
are now free of obstacles such as dams and barriers. This also provides free
passage for the wild fish on their way to and from spawning grounds and the sea,
which is beneficial for wild fish stocks. Today the aquaculture industry—both
inland and sea-based fish farms—is the world's fastest growing food
industry.
—Science Daily
填空题
Complete the summary below. Choose NO MORE
THAN THREE WORDS from Reading Passage 3 for each answer.
Write your answers in boxes on your answer sheet. Fish
farming is booming these years and Denmark becomes the leader in the
environmentally friendly field due to {{U}} {{U}} 27 {{/U}}
{{/U}}. This practice chooses water from {{U}} {{U}} 28 {{/U}}
{{/U}}not {{U}} {{U}} 29 {{/U}} {{/U}}. In order to improve the
fish industry, {{U}} {{U}} 30 {{/U}} {{/U}}and some key industry
players decide to stretch this high technology to somewhere {{U}} {{U}}
31 {{/U}} {{/U}}However, the output in Denmark is not satisfied because
of {{U}} {{U}} 32 {{/U}} {{/U}}Therefore, Danish players use a
new technology for breeding more fish as well as protecting the environment.
Through this approach, the {{U}} {{U}} 33 {{/U}} {{/U}}emitted
from fish can be transferred into {{U}} {{U}} 34 {{/U}} {{/U}},
and then to the harmless {{U}} {{U}} 35 {{/U}} {{/U}}.
填空题
Do the following statements agree with the information given in Reading Passage 3?
In boxes on your answer sheet, write
TRUE if the statement agrees with the information
FALSE if the statement contradicts the information
NOT GIVEN if there is no information on this
The GUDP project aims to guarantee that saltwater fish can be farmed inland.
填空题
Water quality parameters are more important than cleaning technologies in the management of the GUDP project.
填空题
The main target of the project is to satisfy the export market of saltwater fish.
填空题
Dams built in streams improve wild fish stocks.
填空题
Model fish farms are the reason for the rapid progress of aquaculture industry.