C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/62 (2006.01) C02F 9/00 (2006.01) C02F 11/14 (2006.01) C02F 1/52 (2006.01) C02F 1/66 (2006.01) C02F 11/06 (2006.01)
Patent
CA 2298425
The present invention relates to a process for the treatment of arsenic-containing sludge obtained by adjusting arsenic-containing waste water to a PH of 12 or greater by the addition of a calcium compound and subjecting the waste water to solid-liquid separation, the process comprising the steps of adding a calcium compound to the arsenic-containing sludge slurry obtained by the solid-liquid separation, dewatering the resulting sludge, drying the dewatered sludge, and calcining the dried sludge. According to the present invention, arsenic-containing sludge obtained by treating waste water to precipitate arsenic present therein can be calcined to yield a calcined product which involves no risk of arsenic redissolution when it is dumped. Moreover, there is no possibility that arsenic compounds may be volatilized during calcination.
Baba Hiroshi
Iwashita Koichiro
Kamiyoshi Hideki
Nishida Morikata
Shimizu Taku
Mitsubishi Heavy Industries Ltd.
Sim & Mcburney
LandOfFree
Process for the treatment of arsenic-containing sludge 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 the treatment of arsenic-containing sludge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the treatment of arsenic-containing sludge will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1577796