Aufzuchtvorrichtung fuer marine Organismen und Verfahren zur Steuerung einer solchen Vorrichtung

Vorgeschlagen wird ein Verfahren zur Steuerung einer Aufbereitungsanlage (110) fuer salzhaltiges Wasser zumindest eines Aufzuchtbehaelters (10) in einem im wesentlichen geschlossenen Kreislaufsystem fuer das Prozesswasser, mit einer Denitrifikations-Stufe (40), in welcher durch gesteuerte Zugabe von Menthol der Nitratgehalt zumindest eines wesentlichen Teils des Prozesswassers aus dem zumindest einen Aufzuchtbehaelter herabgesetzt wird. Die Herabsetzung geht von einer Steuereinrichtung (80) aus und erfolgt abhaengig von pH-Messwerten (2) in der Denitrifikations-Stufe. Dadurch wird die Wasserqualitaet bzw. die Aufbereitung des Prozesswassers verbessert bzw. optimiert.

DE 19961142 A UPAB: 20000918 NOVELTY - The figure shows the rearing tanks (10), the central processor (80) and the water treatment circuit. On the supply side, food is metered (100,104) and the water is oxygenated (13). Water is drawn off the tanks both at the top (18a) and the bottom (19b). The water drawn off the bottom will contain detritus that settles out in a tank (20). DETAILED DESCRIPTION - The figure shows the rearing tanks (10), the central processor (80) and the water treatment circuit. On the supply side, food is metered (100,104) and the water is oxygenated (13). Water is drawn off the tanks both at the top (18a) and the bottom (19b). The water drawn off the bottom will contain detritus that settles out in a tank (20). The recirculated water is checked for oxygen concentration, pH and redox potential at various stages. Nitrates, due to excretion products, are removed in a vessel (40) by the addition of methanol. This addition is proportional to the pH of the water in vessel (40). The pH measurement at this point also controls the food addition by metering device (104) in a proportional manner. Macromolecules are removed in the foam vessel (50) by the addition of ozone at a rate determined by processor (80) to prevent contamination. New water, at a rate of approximately 10% of the flow rate in the treatment circuit, is added at (120). Buffer solution is also added at given intervals. USE - The automatic control of water quality and food supply in intensively operated fish rearing tanks. ADVANTAGE - The best rearing conditions can be maintained automatically.