WATER PURIFICATION DEVICE, AQUACULTURE WATER PURIFICATION SYSTEM, WATER PURIFICATION METHOD, AND PRODUCTION METHOD FOR AQUATIC ORGANISM

摘要

Provided is a water purification device including: at least one base material carrying denitrifying bacteria; a holding part which holds the base material; a water sprinkling mechanism which sprinkles water to be treated onto the base material; and a water drainage mechanism which is arranged on the holding part and drains the water to be treated such that at least a portion of the base material is constantly unexposed to the water to be treated.