▎ 摘　　要

NOVELTY - Oil containing waste water treatment agent comprises 6-12 pts. wt. bentonite, 5-10 pts. wt. vermiculite, 4-6 pts. wt. polyvinyl alcohol, 1.3-2.8 pts. wt. formamide, 3-6 pts. wt. gelatin, 15-22 pts. wt. wild pansy, 6-8 pts. wt. nano graphene, 3-5 pts. wt. magnet slag, 2.4-4 pts. wt. fruit tannin and 3.5-5 pts. wt. tartaric acid. USE - Used as oil containing waste water treatment agent. ADVANTAGE - The agent has good adsorption, flocculation and sedimentation effect on oil and high oil removal rate and preparation method uses various raw materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing oil containing waste water treatment agent, comprising (i) adding bentonite into 3-5 times (60-75%) of aqueous solution of ethanol, stirring magnetically, adding product into the muffle furnace, heating at 160-180 degrees C for 80- 110 minutes and cooling to obtain a first mixture; (ii) expanding wild pansy by a low-temperature airflow, extracting by a supercritical carbon dioxide extraction method, centrifuging to obtain a pansy extract, and dividing pansy extract equally into two; (iii) milling vermiculite, gelatin, fruit tannin and polyvinyl alcohol in ball mill at 150-210 revolutions/minute at ball-to-batch ratio of 50-60:1 for 60-80 minutes and adding a pansy extract into the side ball at a constant rate within 3-5 minutes to obtain a second mixture; (iv) pulverizing magnet slag to 100-120 meshes, adding magnet slag powder and formamide into the tartaric acid and stirring uniformly under magnetic conditions to obtain a third mixture; (v) adding nanographene into another pansy extract and shaking ultrasonically for 25-40 minutes to obtain a fourth mixture; and (vi) mixing first, second, third and the fourth mixture in a reaction vessel, reacting at 60-80 degrees C at 25-40 MPa for 50-70 minutes, filtering centrifugally and drying solid product at 75-90 degrees C.