B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/96 (2006.01) A62D 3/33 (2007.01) B01D 33/04 (2006.01) B01D 53/48 (2006.01) A62D 3/00 (2006.01)
Patent
CA 2152198
A method and an apparatus for the purification of residual products from flue gas purification plants are disclosed. Between a wet-desulphurization plant for flue gas and an associated waste water-treatment plant for the purification of the water used in the wet- desulphurization there is inserted a leaching apparatus for the purification of hazardous residual products supplied through a conduit from flue gas purification in dry- and semidry-desulphurization plants by means of waste water supplied through a conduit from the plant. The hazardous residual products supplied through the conduit are admixed with the waste water supplied through the conduit in a container whereupon the mixture is conveyed to a filtration step wherein the soluble salts and leachable heavy metals are separated from the filter cake produced and said filtrate being, through a conduit conveyed to the waste water-treatment plant whereas the leached out filter cake, now in the form of a waste dump-safe residual product, is conveyed to a deposit site through a conduit. Thus, the waste water from the wet-desulphurization plant is reused and the overall water consumption reduced. Furthermore, dump-hazardous residual products are converted into dump-safe deposits thereby reducing waste dump expenses without significant additional treatment cost.
Borden Ladner Gervais Llp
Fls Miljo A/s
LandOfFree
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