| 摘要 |
PURPOSE: A filter unit for decomposing nitrate by culturing anaerobic bacteria in the filter is provided to decompose toxic nitrate and to emit toxicless nitric acid gas. CONSTITUTION: A filtering unit is attached to the rear side of a water tub using a magnet. Nitrate is eliminated by rotating introduced bubbles. The rotating cycle of the filtering unit is adjusted based on an oxygen valve. A space is arranged at a water introducing part. Aerobic bacteria are cultured in the space and consume oxygen in filtering medium(d). The space is separated to be cleaned and managed. Dust is prevented from being introduced into an anaerobic bacteria inhabiting space. |
