METHOD AND DEVICE FOR RECOVERING PHOSPHOROUS

Japanese Patent JP2008178824

A

To reduce an aeration power consumption in an aerobic stage by reducing the amount of air to be fed, to prevent MAP(Magnesium Ammonium Phosphate) from clogging inside a transfer pipe by adopting a water treatment system for the recovery of phosphorous, and to easily perform various controls during operation.

This method comprises: an aerobic treatment stage where a porous biological reaction member 13 arranged in a vapor phase and carried with polyphosphoric acid-accumulating bacteria is brought into contact with phosphorous-containing waste water under aerobic conditions, so as to ingest phosphorous into the polyphosphoric acid-accumulating bacteria; and an anaerobic treatment stage where the biological reaction member 13 is brought into contact with organic waste water under anaerobic conditions, so as to ingest organic matter into the polyphosphoric acid-accumulating bacteria, and the phosphorous is released from the polyphosphoric acid-accumulating bacteria into the organic waste water.

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OHASHI AKIYOSHI
TAKAHASHI TOKI
ISHIHARA SHIGEKI
HARADA HIDEKI
IMACHI HIROYUKI
TAMATSUBO KAZUAKI
SUMINO HARUHIKO

JP2007015549A

August 07, 2008

January 25, 2007

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TAMATSUBO KAZUAKI
UNIV NAGAOKA TECHNOLOGY
NAT INST ENVIRONMENTAL STUDIES
INST NAT COLLEGES TECH JAPAN

C02F3/30; C02F3/04; C02F3/10; C02F3/34

Yamada Patent Office

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