| abstract |
The invention provides a process for treating gasified black water, which comprises the following steps (1): passing the gasified black water into an electromagnetic reaction tank, the electromagnetic reaction tank is made of metal material or alloy; permanent magnets are installed on the upper and lower sides of the reaction tank, A magnetic field perpendicular to the direction of the water flow is formed in the reaction tank; (2) the gasified black water enters the coagulation tank and the flocculation tank from the electromagnetic reaction tank. The coagulation tank is filled with a silicon remover and a coagulant, and the flocculation tank is added with a flocculant; Settling through the inclined plate sedimentation tank. (3) The remaining suspended solids are then removed after being filtered through a filter. After the gasification black water is treated by the process of the present invention, the hardness is less than 20mg/L, the soluble silicon is less than 20mg/L, the suspended solid content is less than 3mg/L, and the chloride ion is less than 20mg/L, and all can be recycled in the gasification system. , reduce the fouling rate of the gasification system by 90%, and reduce the amount of waste water discharged by 80%. |