METHOD OF DENITRIFYING GROUND WATER BY UTILIZING MICROCAPSULE INCLUDING DENITRIFYING BACTERIUM AND ITS EQUIPMENT

摘要

PPROBLEM TO BE SOLVED: To provide a control system for continuous driving equipment which efficiently and stablely removes nitrate nitrogen and nitrite nitrogen by using microcapsule particles including autotrophic denitrifying bacteria. PSOLUTION: Three fluidized bed type systems consisting of denitrifying columns, activating columns and filtrate supplying columns are adopted as shown in Figure 1, by which the stable removal of the nitrate nitrogen and nitrite nitrogen in continuous operating water is performed. As another method, a plurality of the denitrifying columns as shown in Figure 2 are used and the stable continuous operation is carried out while one of these columns is activated as the activating column at all times, by which the removal of the nitrate nitrogen and nitrite nitrogen in the water is performed. PCOPYRIGHT: (C)2003,JPO