Liquid purification or separation – Constituent mixture variation responsive
Patent
1993-07-29
1996-01-02
Hruskoci, Peter A.
Liquid purification or separation
Constituent mixture variation responsive
210101, 210151, 210192, 2101953, 210197, 210199, 210202, 210206, 210220, 210915, C02F 152, C02F 310
Patent
active
054805376
ABSTRACT:
An apparatus for waste water treatment, wherein fluorine contained in waste water is treated into a fluoride through a chemical reaction and sludge containing the fluoride is thickened and dehydrated into a sludge cake, has first and second tanks each packed with calcium carbonate mineral. In the first tank, waster water containing fluorine is agitated by air discharged from an air diffuser and caused to react with the calcium carbonate mineral. Through this reaction of the waste water with the calcium carbonate mineral and action of microorganisms on the surface of the calcium carbonate mineral, a pH value and a fluorine concentration of the waste water is adjusted till the pH value and the fluorine concentration fall within their respective predetermined ranges. In the second tank, an aluminum agent is added to the waste water coming from the first tank while the waste water being agitated so that the pH value and the fluorine concentration of the waste water are further adjusted through a chemical reaction of the fluorine with the calcium carbonate mineral and aluminum agent and action of microorganisms propagating on the surface of the mineral so as to fall within their respective target ranges.
REFERENCES:
patent: 1364387 (1921-01-01), Landreth
patent: 2422258 (1947-06-01), Prager
patent: 2458163 (1949-01-01), Hays
patent: 3402125 (1968-09-01), Tanaka
patent: 3623976 (1971-11-01), Cessna
patent: 3728253 (1973-04-01), Kaufman
patent: 3773660 (1973-11-01), Hopwood
patent: 4008159 (1977-02-01), Besik
patent: 4388195 (1983-06-01), von Hagel et al.
patent: 4717519 (1988-01-01), Sagami
patent: 4724084 (1988-02-01), Pahmeier et al.
patent: 5156746 (1992-10-01), Maree et al.
"Recovery Technology of Fluorine From Chemicals Used For Semiconductor Production", issued Nov. 1992.
Hamaguchi Yoshihiro
Hosoda Shunji
Imai Takashi
Makino Hiroshi
Matuura Kenji
Hruskoci Peter A.
Sharp Kabushiki Kaisha
LandOfFree
Apparatus for waste water treatment using calcium carbonate mine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for waste water treatment using calcium carbonate mine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for waste water treatment using calcium carbonate mine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-232979