CLOSED CIRCULATION TYPE LAND-BASED AQUACULTURE SYSTEM AND ITS CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To provide a closed circulation type land-based aquaculture system and its control method in which ammonia is effectively decomposed in the aquaculture water of a breeding aquarium while preventing water level fluctuation when decomposing the ammonia in the breeding water of the breeding aquarium, and the generation of an oxidant can be prevented.;SOLUTION: A closed type land-based aquaculture system 1 has a breeding aquarium 2 for breeding fish and shellfish, and an ammonia processing unit 4. The closed type land-based aquaculture system decomposes the ammonia in the aquaculture underwater by continuously circulating aquaculture water between the breeding aquarium 2 and the ammonia processing unit 4. The closed type land-based aquaculture system 1 and its control method are configured such that the ammonia processing unit 4 is constituted by juxtaposing multiple ammonia processing units, and the number of ammonia processing units for decomposing the ammonia among the juxtaposed ammonia processing units is increased and decreased according to the ammonia concentration in the aquaculture water.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT