Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1997-02-28
1998-12-29
Woo, Jay H.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210683, 210726, 210757, C02F 158
Patent
active
058535985
ABSTRACT:
A process for treating waste water of flue gas desulfurization comprising successively adjusting the pH of the waste water to 5 or less, bringing the waste water into contact with a column packed with fine particles of iron, flocculating the waste water, removing formed flocs from the waste water by solid-liquid separation, and optionally, bringing the remaining waste water into contact with a resin for COD adsorption, successively. Hazardous substances, such as oxidative substances, peroxosulfuric acid, iodic acid, heavy metals such as copper and lead, and non-metallic substances such as selenium compounds and fluorites, can be removed simultaneously and efficiently from the waste water of flue gas desulfurization containing these hazardous substances by using the process which is a simplified waste water disposal system. Water having an excellent quality for a long time can be obtained by the process because deterioration of a resin for COD adsorption by oxidative substances such as peroxosulfuric acid and iodic acid can be prevented. Thus, an easy and efficient process for treating waste water of flue gas desulfurization can be provided.
REFERENCES:
patent: 2171203 (1939-08-01), Urbain et al.
patent: 3521752 (1970-07-01), Lindman et al.
patent: 3522173 (1970-07-01), Lindman et al.
patent: 3575853 (1971-04-01), Gaughan et al.
patent: 3914387 (1975-10-01), van Jordan et al.
patent: 3931007 (1976-01-01), Sugano et al.
patent: 3984312 (1976-10-01), Dulin et al.
patent: 4123355 (1978-10-01), Poradek et al.
patent: 4154673 (1979-05-01), Otani et al.
patent: 4224148 (1980-09-01), Lindman et al.
patent: 4405464 (1983-09-01), Baldwin et al.
patent: 5021163 (1991-06-01), Anderson et al.
patent: 5202030 (1993-04-01), Axnas
patent: 5330658 (1994-07-01), Grant et al.
patent: 5575919 (1996-11-01), Santina
Patent Abstracts of Japan, Derwent Publications, Ltd. of JP 06 079 286, Mar. 22, 1994.
Patent Abstracts of Japan, Derwent Publications, Ltd. of JP 60 197224, Oct., 1995.
Patent Abstracts of Japan, Derwent Publications, Ltd. of JP 07 075778 Mar. 20, 1995.
Patent Abstracts of Japan, Derwent Publications, Ltd. of JP 55 073392 Jun. 3, 1990.
Enami Masao
Ogoshi Tsutomu
Tsuboya Hisao
Tsurumaru Yohka
Watanabe Tsukasa
Kurita Water Industries Ltd.
Morrison Betsey J.
Woo Jay H.
LandOfFree
Process for treating waste water of flue gas desulfurization does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for treating waste water of flue gas desulfurization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for treating waste water of flue gas desulfurization will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1420767