Water purification apparatus, culture water purification system, purification method of water, and production method of aquatic organism

摘要

At least one substrate carrying a denitrifying bacteria, a holding portion for holding the substrate, a sprinkling mechanism for sprinkling the treated water onto the substrate, and a drainage mechanism disposed in the holding portion for draining the treated water so that at least a portion of the substrate is always exposed from the treated water Water purifier equipped with.