Liquid purification or separation – Recirculation – Serially connected distinct treating or storage units
Patent
1981-04-16
1984-01-03
Wyse, Thomas G.
Liquid purification or separation
Recirculation
Serially connected distinct treating or storage units
210199, 210201, 422245, B01D 900
Patent
active
044241267
ABSTRACT:
Method and apparatus for removing heavy metals as sulfides from aqueous liquids. The aqueous liquid is introduced into a circulating liquid loop wherein there are established a mixing zone, a controlled precipitation initiating zone, a crystal growing zone and a crystal settling zone. The aqueous feed liquid containing H S dissolved therein and at a pH below that at which the sulfide is precipitated is mixed in the loop with a pH-adjusting liquid; and the degree of supersaturation with respect to the metal sulfide is maintained within the controlled precipitation initiating and crystal growing zones in the metastable condition so that the growth rate of the metal sulfide crystals remains greater than under uncontrolled conditions vis-a-vis the nucleation rate to effect the production of metal sulfide crystals of a character which makes it possible to separate them through clarification and filtration.
REFERENCES:
patent: 3119772 (1964-01-01), Hess et al.
patent: 4025430 (1977-05-01), Pagel
patent: 4218431 (1980-08-01), Spevack
patent: 4228089 (1980-10-01), Bischob et al.
patent: 4242177 (1980-12-01), Suzuki et al.
Nadkarni Ravindra M.
Santhanam Chakra J.
Arthur D. Little Inc.
Hammond Richard J.
Wyse Thomas G.
LandOfFree
Apparatus for removing heavy metals from aqueous liquids 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 removing heavy metals from aqueous liquids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for removing heavy metals from aqueous liquids will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1031170