▎ 摘　　要

NOVELTY - Treatment of graphene production wastewater comprises sending wastewater into regulation pool, air mixing through air compressor, water pumping by pump into tower, adding sulfamic acid to tower, removing zinc powder filler and zeolite in denitrification tower and mixing aluminum catalyst to adjust pH to 1-2, entering effluent after reaction to recovery tank of zinc salt; and adding sodium carbonate to recovery tank of zinc salt, adjusting pH to 6.5-7.5, entering high efficiency precipitation separator, separating reacted zinc carbonate precipitate, and lifting through sludge pump to plate. USE - Method for treating graphene production wastewater (claimed). ADVANTAGE - The method is more thorough and conducive to energy conservation and environmental protection. It has short process, good water quality, small required equipment investment, and high economic and social benefits. DETAILED DESCRIPTION - Treatment of graphene production wastewater comprises sending wastewater into regulation pool, air mixing through air compressor, water pumping by pump into tower, adding sulfamic acid to tower, removing zinc powder filler and zeolite in denitrification tower and mixing aluminum catalyst to adjust pH to 1-2, entering effluent after reaction to recovery tank of zinc salt; adding sodium carbonate to recovery tank of zinc salt, adjusting pH to 6.5-7.5, entering high efficiency precipitation separator, separating reacted zinc carbonate precipitate, lifting through sludge pump to plate and frame filter press, heating into rotary kiln, cooling into bag separator, collecting zinc oxide products, recycling for production of zinc oxide, subjecting high efficiency precipitation separator into manganese salt efficient precipitation separator; adding polyaluminum chloride and 30% sodium hydroxide to manganese salt high efficiency precipitation separator, adjusting pH to 8-9, coagulating, flocculating, adding polyacrylamide, pumping sludge into frame filter press, dehydrating, recovering manganese production, and separating manganese salt efficient precipitation separator into sulfate high efficiency precipitation separator; and adding lime milk to sulfate high efficiency precipitating separator, adjusting pH value to 10-11, adding polyaluminum chloride and polyacrylamide, flocculating sulfate, drying out sludge into frame filter press, treating gypsum sinotrans to get supernatant into pool, and discharging standard into municipal sewage plant.