| 摘要 |
Provided is a single-tank integrated wastewater processing tank that is used in the processing of wastewater containing sodium aluminate discharged during an aluminum member surface processing or molding/machining step, and in particular, reduces as much as possible the amount of clinker generation of aluminum hydroxide at the inner wall surface of a separation unit and is thus able to prevent problems stemming from clinker adhesion. Also provided is a wastewater processing method that uses the tank to process wastewater containing sodium aluminate and recovers a sodium hydroxide solution and aluminum hydroxide. The single-tank integrated wastewater processing tank that is for wastewater containing sodium aluminate and in which a precipitation unit and a separation unit are configured integrally is characterized by a cooling means being provided to the precipitation unit positioned below the tank main body, and a heating means being provided to the separation unit positioned above the tank main body. |
