▎ 摘　　要

NOVELTY - Removal of organophosphorus pesticide in wastewater involves diluting organophosphorus pesticide wastewater using water to chemical oxygen demand (COD) of 130.28-315.47 mg/L, adding 1-500 ml Oxone (RTM: potassium peroxymonosulfate) reagent to the wastewater, mixing, adding an alkali substance, mixing, adding 0.5-1.2 g iron/nickel oxide/graphene composite, stirring uniformly, performing UV irradiation for 40-60 minutes, degrading organophosphorus pesticide in the wastewater, and calculating removal rate (n) of organophosphorus pesticide according to the change of COD value. USE - Removal of organophosphorus pesticide in wastewater (claimed). ADVANTAGE - The method enables efficient removal of organophosphorus pesticide in wastewater by economical and environmentally-friendly process with reduced energy consumption. DETAILED DESCRIPTION - Removal of organophosphorus pesticide in wastewater involves diluting organophosphorus pesticide wastewater using water to COD of 130.28-315.47 mg/L, adding 1-500 ml Oxone (RTM: potassium peroxymonosulfate) reagent to the wastewater, mixing uniformly, adding an alkali substance, mixing, adding 0.5-1.2 g iron/nickel oxide/graphene composite, stirring uniformly, performing UV irradiation for 40-60 minutes, degrading organophosphorus pesticide in the wastewater, determining COD of the resultant wastewater based on GB11914-89 method, and calculating removal rate (n) of organophosphorus pesticide according to the change of COD value, using relation: n=((C0-Ct)\C0)x 100, where C0 is COD value of the organophosphorus pesticide wastewater at the beginning of the reaction, and Ct is COD determination value of organophosphorus pesticide wastewater at the end of the reaction. The iron/nickel oxide/graphene composite is prepared by uniformly mixing 0.12-0.74 g iron(III) nitrate nonahydrate, 4.35-10.2 g nickel(III) nitrate hexahydrate and 2.1-4.2 g citric acid, adding aqueous ethanol solution containing ethanol and water in volume ratio of (1-2):5, mixing at room temperature for 30 minutes, adding 1.5-3.5 of graphene to the resultant mixed solution, performing magnetic stirring, adding 7-10 mL 10 mol/L sodium hydroxide solution, stirring for 20-35 minutes, pouring the resultant mixture into a constant-pressure reactor, reacting at 120-160 degrees C for 15-20 hours under nitrogen protective atmosphere, vacuum drying at 100 degrees C, washing dried material three times with deionized water and ethanol. The alkali substance is chosen from sodium carbonate, sodium bicarbonate and sodium hydroxide.