Treatment method for circular utilizing of zinc electrolyzation flushing waste water

The invention discloses a disposing method to circulate use zinc electrolyzing wash waste water, which comprises the following steps: 1. neutralizing/filtering; adjusting pH value of zinc electrolyzing wash waste water at 3-6 with alkali; filtering; deslagging; 2. choosing P2O4 as extractant and coal oil as diluent; mixing waste water clarified solution after neutralization and organic phase; extracting; transforming zinc in water phase to organic phase; making raffinate directly or through de-oiling disposition as washing water used to de-greasing process; 3. reextracting zinc-rich organic phase with depleted electrolyte or sulfuric acid; making zinc in the organic phase retransform to water phase; cycle using organic phase; 4. de-oiling the rear liquid after reextracting with activated char; delivering de-oil rear liquid to electrolytic deposit zinc or back to leaching system; using as leaching agent.