| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method solving such a problem that the charging of organic matter to an anaerobic tank and a denitrifying tank is necessary and indispensable operation heretofore in order to efficiently remove phosphorus or nitrogen in a sewage treatment equipment and the charging of the organic matter becomes waste of resources because the organic matter can be utilized as an industrial raw material or fuel and water treatment cost is increased because the bulky amount of the organic matter is required, to select organic matter more inexpensive than ever and capable of being obtained in large quantities to utilize the same in the anaerobic tank or the denitrifying tank. SOLUTION: Algae, especially, blue-green algae or fermentation products of water bloom are charged in the anaerobic tank or denitrifying tank of the sewage treatment equipment to be utilized as organic matter being resources low in value and capable of being inexpensively obtained in large quantities. At this time, the fermentation products by anaerobic self-fermentation, lactic fermentation or alcohol fermentation are utilized.</p> |
