| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a treating method of nitrogen and phosphorus in waste water which enables removing nitrogen efficiently and preventing the elution of phosphorus on sludge dehydration and the sticking and blocking of dusts on melt processing of sludge. SOLUTION: The nitrogen removing device is provided with a nitrification tank and a denitrification tank, either one or both of inorganic flocculating agent and polymer flocculating agent are added to the waste water exhausted from the nitrogen removing device in which carriers are charged into one tank or more which are contained in the nitrogen removing device and, thereby, phosphorus is removed by aggregation and sedimentation.</p> |
