A method for recycling wastewater rolled stainless steel

The present invention relates to a cold water reuse of stainless steels, including pre-treatment and a desalting step; after the cold-rolled stainless acidic waste water through the pre-neutralization, coagulation, sedimentation processes, by sodium carbonate or medicament softening potassium carbonate, pH regulation, cooling, filtration, ultrafiltration / microfiltration, then use according to water salinity, and the treatment and reuse use reverse osmosis or two reverse osmosis desalination. After the stainless steel of the present invention, the cold rolling treatment of wastewater desalination, wastewater conductivity 30μs / cm or less, and reused in the production system, reducing the fresh water consumption, but also reduces the amount of water discharged waste of. The invention has economic and environmental double effect, with good social and environmental benefits.