WO2004024638-A1  PATENT ABSTRACTS OF JAPAN vol. 018, no. 176 (C-1183), 25 March 1994 (1994-03-25) & JP 05 337492 A (MITSUBISHI KAKOKI KAISHA LTD), 21 December 1993 (1993-12-21);  BEUN J J ET AL: "Aerobic granulation in a sequencing batch airlift reactor" WATER RESEARCH, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 36, no. 3, February 2002 (2002-02), pages 702-712, XP004312290 ISSN: 0043-1354;  BEUN J J ET AL: "N-REMOVAL IN A GRANULAR SLUDGE SEQUENCING BATCH AIRLIFT REACTOR" BIOTECHNOLOGY AND BIOENGINEERING. INCLUDING: SYMPOSIUM BIOTECHNOLOGY IN ENERGY PRODUCTION AND CONSERVATION, JOHN WILEY & SONS. NEW YORK, US, vol. 75, no. 1, 5 October 2001 (2001-10-05), pages 82-92, XP001124872 ISSN: 0006-3592;  DANGCONG P ET AL: "Aerobic granular sludge-a case report" WATER RESEARCH, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 33, no. 3, February 1999 (1999-02), pages 890-893, XP004151609 ISSN: 0043-1354;  MORGENROTH E ET AL: "Aerobic granular sludge in a sequencing batch reactor" WATER RESEARCH, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 31, no. 12, 1 December 1997 (1997-12-01), pages 3191-3194, XP004098442 ISSN: 0043-1354EP1542932-A1  See references of WO 2004024638A1US7273553-B2  Beun, J. J., et al., "N-Removal in a Granular Sludge Sequencing Batch Airlift Reactor", Biotechnology and Bioengineering, Oct. 5, 2001, vol. 75, No. 1, pp. 82-92.;  Beun, J.J., et al., "Aerobic granulation in a sequencing batch airlift reactor", Water Research, 2002, vol. 36, pp. 702-712.;  Dangcong, Peng, et al., "Aerobic Granular Sludge_A Case Report", Water Research, 1999, vol. 33, No. 3, pp. 890-893.;  Morgenroth, E., et al., "Aerobic Granular Sludge in a Sequencing Batch Reactor", Water Research, 1997, vol. 31, No. 12, pp. 3191-3194.;  Patent Abstracts of Japan, Publication No. 05-337492, Mitsubishi Kakoki Kaisha Ltd., Dec. 21, 1993.EP1542932-B1  BEUN J J ET AL: "Aerobic granulation in a sequencing batch airlift reactor" WATER RESEARCH, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 36, no. 3, February 2002 (2002-02), pages 702-712, XP004312290 ISSN: 0043-1354;  BEUN J J ET AL: "N-REMOVAL IN A GRANULAR SLUDGE SEQUENCING BATCH AIRLIFT REACTOR" BIOTECHNOLOGY AND BIOENGINEERING. INCLUDING: SYMPOSIUM BIOTECHNOLOGY IN ENERGY PRODUCTION AND CONSERVATION, JOHN WILEY & SONS. NEW YORK, US, vol. 75, no. 1, 5 October 2001 (2001-10-05), pages 82-92, XP001124872 ISSN: 0006-3592;  DANGCONG P ET AL: "Aerobic granular sludge-a case report" WATER RESEARCH, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 33, no. 3, February 1999 (1999-02), pages 890-893, XP004151609 ISSN: 0043-1354;  MORGENROTH E ET AL: "Aerobic granular sludge in a sequencing batch reactor" WATER RESEARCH, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 31, no. 12, 1 December 1997 (1997-12-01), pages 3191-3194, XP004098442 ISSN: 0043-1354;  PATENT ABSTRACTS OF JAPAN vol. 018, no. 176 (C-1183), 25 March 1994 (1994-03-25) & JP 05 337492 A (MITSUBISHI KAKOKI KAISHA LTD), 21 December 1993 (1993-12-21)