Treatment of arsenic pollution
The arsenic-containing wastewater comes from industrially emitted trivalent arsenite, arsenate, arsenic dust and arsenic oxides. Containing wastewater treatment method are more commonly used are: lime method, Fe, Mn method, a curing method, and a method of soft manganese comprehensive recovery method. Hunan is one of the main mining of arsenic minerals produced gold extraction, gold Huangjindong using rotary kiln roasting arsenic removal and recovery of arsenic trioxide (AsO 2 O 3), but because of equipment, operation and management is not perfect, the flue gas, The smoke and dust leakage are relatively serious, so it is necessary to continue to renovate and improve. In addition to the above-mentioned method for removing arsenic from a large number of arsenic-containing gold mines that need to be developed and utilized, it is necessary to actively explore and study some new technologies for wet arsenic removal, and introduce new methods that have achieved good results abroad, and how to use Xinnuo process.
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