Fish breeding circulation filtration tank and circulation filtration system

摘要

The present invention relates to a circulating filtration tank and a circulating filtration device which can solve many problems in a conventional circulating filtration tank and can stably breed fish and shellfish for a long time of 6 months or more.;The circulating filtration tank (1) connected to the breeding tank (2) is a sedimentation / adsorption tank, an organic decomposition decomposition tank filled with an organic decomposition bacteria attachment material, a nitride bacterial tank filled with a nitride bacterial attachment agent, and a basic solid material. The neutralization tank, the nitrate reduction bacteria and the denitrification bacterium filled with denitrifying bacteria attachment material is characterized in that it consists of a circulating filtration tank (1) and a bacterial device connected in that order.