Liquid purification or separation – Processes – Treatment by living organism
Patent
1994-12-15
1997-01-14
Hruskoci, Peter A.
Liquid purification or separation
Processes
Treatment by living organism
210610, 210631, 210667, 210714, 210903, 210916, C02F 152
Patent
active
055935923
ABSTRACT:
A low concentration (0.1 to 0.5 mM) of aluminum ions is added to an organic wastewater to selectively raise specific bacteria which can grow without producing unpleasant odors. The bacteria is used for treating the organic wastewater of high density without producing odors thus contributing to the minimum size of a wastewater treatment system. Then, increase of the aluminum ions to a high concentration (more than 4 mM) accelerates flocculation and precipitation of the bacteria for disposal. When a proper mineral is added to the wastewater, a lower concentration (more than 1 mM) of the aluminum ions can encourage the flocculation and precipitation of the bacteria and also, a resultant sludge will be reduced in amount for ease of maintenance.
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Kagawa Haruo
Nakayama Eiichiro
Yoshimura Fumihiko
Green Theodore M.
Hildebrand Christa
Hruskoci Peter A.
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