Liquid purification or separation – Processes – Treatment by living organism
Patent
1997-05-19
2000-05-02
Cintins, Ivars
Liquid purification or separation
Processes
Treatment by living organism
210622, 210631, 210694, 210151, 2101951, 210196, 210199, 210202, 210259, 210284, C02F 306, C02F 900
Patent
active
060568763
ABSTRACT:
A method and apparatus for wastewater treatment is provided which can treat persistent surface active agents and coloring substances in wastewater, and which is compact and economical. The wastewater treatment method introduces water to be treated into a charcoal tank 3 packed with charcoal 10 and treats the water therein, the water to be treated having been pretreated in a pretreatment section 2. The water under treatment is introduced from the charcoal tank 3 into an activated carbon tower 6 packed with activated carbon 17 to treat the water therein. Treatment of the water in two stages, namely, treatment by bioactivated charcoal 10 and treatment by bioactivated carbon 17, makes it unnecessary to carry out backwashing of the activated carbon tower 6 and regeneration of activated carbon 17. The service life of the activated carbon can be greatly extended.
REFERENCES:
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patent: 4895645 (1990-01-01), Zorich
patent: 5049266 (1991-09-01), Gotz et al.
patent: 5578214 (1996-11-01), Yamasaki et al.
patent: 5599443 (1997-02-01), Yamasaki et al.
Nishio Satoshi
Uchiyama Takamasa
Yamasaki Kazuyuki
Yokotani Atsushi
Cintins Ivars
Sharp Kabushiki Kaisha
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