公开(公告)号：EP1476403A1

公开(公告)日：2004-11-17

申请号：EP03742694.7

申请日：2003-01-28

申请人： Sut Seraya Pte Ltd. ,  Nanyang Technological University

发明人： TAY, Joo Hwa ,  TAY, Tiong Lee, Stephen ,  SHOW, Kuan Yeow ,  LIU, Yu ,  IVANOV, Volodymyr

IPC分类号： C02F3/26 ,  C02F3/00 ,  C02F11/00

CPC分类号： C02F3/1263 ,  C02F3/12 ,  C02F2203/004 ,  Y02W10/15

摘要： The method of producing aerobic biogranules for the treatment of waste water comprising the steps of: a) introducing waste water into a reactor; b) seeding the reactor with a active biomass material; c) supplying the oxygen-containing gas to the reactor to provide a mixing action to the suspension of biomass material in said waste water, the supply of oxygen-containing gas providing a superficial upflow gas velocity greater than 0.25 cm/s; d) initiating a period of nutrient starvation of the biomass material while continuing to supply oxygen-containing gas; e) allowing formed aerobic granules to settle in a settling zone in said reactor; f) discharging at least a portion of the waste water; g) repeating steps (a) to (f) until at least a portion of the biogranules in said settling zone are within a predetermined properties; and h) recovering said biomass granules within those predetermined properties.