▎ 摘　　要

NOVELTY - Preparing sewage treatment agent for heavy metal treatment, comprises (i) dispersing magnetic graphene oxide in ethanol solution, adding 3-aminopropyltriethoxysilane, at 30℃, stirring and reacting for 24 hours, centrifuging to obtain aminated magnetic graphene oxide; (i) dispersing aminated magnetic graphene oxide in distilled water, adding glutaraldehyde solution, adding amino-terminated hyperbranched polymer after ultrasonic treatment, stirring formaldehyde-based chitosan and amino-terminated polythiol compound at 40°C for 12-16 hours, centrifuging, precipitating, washing, and drying. USE - The sewage treatment agent is useful for heavy metal treatment. ADVANTAGE - The sewage treatment agent improves the stability of the magnetic graphene oxide matrix, and has excellent adsorption performance and antibacterial properties. The method solves the problems of low adsorption efficiency, poor separation effect and poor bacterial pollution resistance of the existing heavy metal pollution adsorbent. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for sewage treatment agent for heavy metal treatment.