Aquaculture Engineering by Odd-Ivar Lekang

By Odd-Ivar Lekang

Around the world, aquaculture has elevated at a normal of 9.2% for the prior 30 years, in comparison with merely 2.8% annual raise for terrestrial farming. creation from fish (and shellfish and algae) farms now includes 30% of the whole of the World's foodstuff from our waters and this development is expected to proceed till not less than 2025.Aquaculture engineering is a key zone for all aquatic creation amenities and this complete booklet covers all elements of aquaculture engineering with chapters masking water delivery and teatment, construction devices (e.g. tanks and cages), feeding platforms, fish delivery and grading, egg dealing with, instrumentation and tracking, slaughtering, cleansing and waste dealing with, development and layout, making plans and qc.

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The best arrangement is to have them in different water bodies, or to treat either the inlet or the outlet water. Fish that migrate can also be a host for transporting micro-organisms up rivers, meaning that short circuiting also can occur here. Migration obstructions in the river may be a solution. Water Quality and Water Treatment: an Introduction Moving aquatic organisms from one farm to another may, via the water used for transport, bring new micro-organisms to the recipient farm. The result can be an outbreak of disease on the fish in the recipient farm.

Pipeline characteristics When delivering water through a pipeline, the pressure and/or head that the pump has to deliver depends on the flow rate to be pumped through the pipe. If the pump is not running, the only resistance is the fixed static head; however, when the pump starts to work there is in addition a resistance head (manometric head) caused by friction losses in the pipe. The manometric head increases with the flow rate through the pipe. If the pump does not lift the water to a higher level, but only overcomes friction in the pipes, there is no static head, but only a resistance head.

4 Water treatment processes. 36 Aquaculture Engineering recipient water body. If the recipient water body is highly eutrophicated the outlet water must be treated, and this is also the case if there are valuable wild stocks in the receiving water. Treatment of outlet water will, however, increase production costs, and is done only when necessary. Often government regulations will dictate the level of treatment required. Sites that require less water treatment are therefore favoured. Treatment of the outlet water is normally restricted to removal of part of the suspended solids.

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