| 摘要 |
<p>PURPOSE:To efficiently perform the biologfical nitration and denitrification treatment of the nitrogen component in org. waste water. CONSTITUTION:In the biological treatment of org. waste water, cells E having nitrating and denitrifying bacteria inclusively immobilized thereon are charged in an aeration tank 1 and a fine screen is provided to the overflowing part to a sedimentation basin 2. The outflow of the immobilizing bacterial cells E is prevented by the fine screen and an aerobic state due to aeration and an anaerobic state due to stirring are alternately repeated using the stirring aerator 3 provided in the aeration tank 1 to nitrate and denitrify the nitrogen component in waste water.</p> |
