Multi-path low-energy-consumption recycling system for steel wastewater

The invention discloses a multi-path low-energy-consumption recycling system for steel wastewater. The wastewater is treated in a staged mode, drained in multiple stages and jointly recycled, a system which comprises grilles, a regulating pool, a lift pump station, a high-density clarifying pool, a V-shaped filtering pool, a self-cleaning filter, an ultra-filtration pool, a cartridge filter, a first-stage reverse osmosis pool and a second-stage reverse osmosis pool is utilized, the V-shaped filtering pool, the ultra-filtration pool, the first-stage reverse osmosis pool and the second-stage reverse osmosis pool are each provided with a water outlet and provided with a V-filtration water tank, an ultra-filtration water tank, a reverse osmosis concentrated water tank, and a V-filtration-ultra-filtration-reverse osmosis blending water tank, and therefore the wastewater can be completely recycled after being treated through the system; all stages of yielding water can be recycled for different purposes, and the recycling range is wide; in the wastewater treating process, multi-stage yielding water is recycled, subsequent treating water quantity is reduced, and overall technology energy consumption is low; all stages of the water yield can be automatically regulated according to the actual recycling requirements, and flexibility and convenience are achieved; the blending water tank can further control all kinds of indexes in blended water and stabilize the yielding water quality.