Process for treating and recycling comprehensive waste water in iron and steel plant

The invention discloses a process for treating and recycling comprehensive wastewater in an iron and steel plant and belongs to the technical field of wastewater treatment. The comprehensive wastewater is treated sequentially through unit facilities such as a regulating reservoir, a cavitation air floating device, an efficient clarifier, a fiber ball filter and an electrodialysis device, effluent serving as production supplemented new water for the iron and steel plant is recycled, and the whole process flow is completed under the control of an automated control system. The process has the advantages of good treatment effect, strong load resistance, simple process flow and high automation degree.