C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/62 (2006.01) C02F 1/52 (2006.01) C02F 1/54 (2006.01) C02F 1/72 (2006.01) C02F 1/74 (2006.01) C02F 9/00 (2006.01)
Patent
CA 2141655
A treatment method for removing arsenic from water includes conditioning the water with one more additives including an iron salt, an acid, and an oxidant until the water contains more iron than arsenic, is acidic, and has an ORP of about plus 600 mV. A reagent is then added to the conditioned water until it becomes basic and the water and additives are then reacted in a reaction chamber wherein iron and arsenic are co- precipitated in the form of iron arsenate and iron hydroxide or iron oxide. Treated water is then separated from the precipitate by settling or filtering.
Mcclintock William W.
Ridout & Maybee Llp
LandOfFree
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