Patent ID: 8603344
Filing Date: 2013-12-10
Classification: C02F,C22B,Y02P

Abstract:
1. A method for removing metals in waste water, the method comprising: adding a reducing agent and an acidic pH adjuster to the waste water to make sediment containing metals dissolve in the waste water; obtaining a secondary waste water by alkali leaching to separate the sediment from the waste water; depositing metals dissolved in the secondary waste water as metal oxides in a fine suspended solid by passing a direct current through the waste water; separating the metal oxides from the secondary waste water, wherein a metal removed from the waste water is thallium, wherein the waste water is waste water produced by rinsing chlorine containing wastes, at least one of industrial waste water produced by rinsing kitchen garbage burned ash, fly ash, and plastic burned ash, or chlorine bypass dust, discharged from a chlorine bypass device installed in cement production equipment.