| abstract |
The utility model discloses a kind of graphene production wastewater treatment system, includes pretreatment unit, filter element and evaporative crystallization unit, and the pretreatment unit, filter element and evaporative crystallization unit are sequentially connected；Sulfuric acid is switched to using sulfate by pretreatment pool, partial oxidation of graphite alkene is removed using fine sand filter and cartridge filter；Reverse osmosis process is carried out using counter-osmosis device to shrink waste water, produces Water Sproading；Concentrate waste water and carry out stage evaporation Crystallization Separation, obtain technical grade sulfuric acid sodium and manganese sulfate, the concentration waste water through counter-infiltration greatly reduces the steam consumption required for evaporating, concentrating and crystallizing, and stage evaporation crystallization process steam can be utilized repeatedly；Reach the zero-emission for ensureing graphene production waste water and ensure the purpose that graphene production waste water high-efficiency recycles. |