C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/11, 23/366
C02F 7/00 (2006.01) A01K 63/04 (2006.01) B01F 3/04 (2006.01) C02F 3/26 (2006.01)
Patent
CA 1296163
Abstract Method and installation for the treatment of liquids, especi- ally oxygen enrichment of water which is used for aquaculture purposes such as the breeding of fish. Thus, it is an object to provide a method where gas bubbles in the water reservoir are avoided and where one freely can treat fresh water and/or re- circulated water for optimal temperature control and/or water renewal. The water flow is joined with a flow of pure oxygen gas which is supplied from an oxygen tank 4 with liquid oxygen. The oxygen is led through an evaporator 16 into a flow system which is forming a recirculating circuit, with pipelines 90, and oxygen enrichment means or reactor unit 2 where water and oxygen are mixed to form a turbulent, foaming gas/liquid flow. The mixture is subsequently led into a gas/liquid separator 3 where gas and liquid are separated. The gas mixture from the separator which now in addition to oxygen also will contain other contaminants like nitrogen and carbon dioxide, is re- circulated by means of a compressor 6. To prevent the building up of great amounts of nitrogen and other contaminants, it is provided a de-aeration means in the form of a bleed 10 or in the form of a special separation unit.
527011
Fetherstonhaugh & Co.
Norsk Hydro A.s
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