公开(公告)号：EP2824081A4

公开(公告)日：2015-12-30

申请号：EP13757564

申请日：2013-03-11

申请人： METAWATER CO LTD ,  TOKYO METRO SEWERAGE SERV CORP

发明人： FURUYA YUJI ,  SUZUKI SHIGEHIRO ,  TSUBOI NOBUKI ,  TAKAHASHI HIROYUKI ,  INAGAKI NORIAKI ,  WADA TSUTOMU ,  MAEDA MAKOTO ,  KASSAI KOUJI ,  SONE KEIICHI

IPC分类号： C02F3/34 ,  C02F3/12 ,  C02F3/30

CPC分类号： C02F3/305 ,  C02F3/006 ,  C02F3/20 ,  C02F3/302 ,  C02F2101/16 ,  C02F2209/001 ,  C02F2209/003 ,  C02F2209/006 ,  C02F2209/14 ,  C02F2209/15 ,  C02F2209/38 ,  Y02W10/15 ,  Y10T137/0363 ,  Y10T137/2499

摘要： When biological treatment is performed with respect to water to be treated flowing in a plurality of aerobic tanks 2a to 2d that constitute a reaction tank 2, the water to be treated is aerated by air diffuser units 6a to 6d. A nitrate meter 7 is provided on an inflow side of the aerobic tank 2c, which is a desired position along a flow of the water to be treated in the reaction tank 2 to measure a nitrate concentration, and an ammonia meter 11 is provided near an outflow side of the reaction tank 2 to measure an ammonia concentration. A control unit 9 supplies a control signal to gas supply-amount control units 10a to 10d so that both the nitrate concentration and the ammonia concentration fall within respective predetermined ranges based on the values of the nitrate concentration and the ammonia concentration, and controls a gas supply amount from the air diffuser units 6a to 6d to the water to be treated for each of the air diffuser units 6a to 6d or collectively in the air diffuser units 6a to 6d.

公开(公告)号：EP2824080A4

公开(公告)日：2015-10-28

申请号：EP13757474

申请日：2013-03-11

申请人： METAWATER CO LTD

发明人： FURUYA YUJI ,  SUZUKI SHIGEHIRO ,  TSUBOI NOBUKI ,  TAKAHASHI HIROYUKI ,  INAGAKI NORIAKI ,  WADA TSUTOMU ,  MAEDA MAKOTO

IPC分类号： C02F3/12 ,  C02F3/30 ,  C02F3/34

CPC分类号： C02F3/305 ,  C02F3/006 ,  C02F3/20 ,  C02F3/302 ,  C02F2101/16 ,  C02F2209/001 ,  C02F2209/003 ,  C02F2209/005 ,  C02F2209/006 ,  C02F2209/15 ,  C02F2209/38 ,  Y02W10/15 ,  Y10T137/0363 ,  Y10T137/2499

摘要： Biological treatment is performed with respect to water to be treated flowing in a plurality of aerobic tanks 2a to 2d that constitute a reaction tank 2. Air is supplied to the reaction tank 2 from air diffuser units 6a to 6d respectively provided in the respective aerobic tanks 2a to 2d, to aerate the water to be treated. A nitrate meter 7 is provided on an inflow side of the aerobic tank 2c, which is a desired position along the flow of the water to be treated in the reaction tank 2, to measure a nitrate concentration. The nitrate meter 7 supplies a measurement value of the nitrate concentration to the control unit 9. The control unit 9 supplies a control signal to gas supply-amount control units 10a to 10d so that the nitrate concentration falls within a predetermined range of the nitrate concentration to be controlled, and controls a gas supply amount from the air diffuser units 6a to 6d to the water to be treated for each of the air diffuser units 6a to 6d or collectively in the air diffuser units 6a to 6d.