▎ 摘　　要

NOVELTY - Methyl cinnamate composite agent for controlling filamentous algae breeding in tail water wetlands comprises polyvinyl alcohol grafted degradable polymer copolymer, methyl cinnamate, nitrifying bacteria agent, sodium acetate and nanometer ferrite particles. USE - Methyl cinnamate composite agent is useful for controlling filamentous algae breeding in tail water wetlands. ADVANTAGE - The sodium acetate provides an effective acidic environment for the propagation of the nitrobacteria, releasing the methyl cinnamate to control the filamentous algae breeding, the nitrification and denitrification reaction is carried out while controlling the filamentous algae breeding, maintaining the ecological environment balance and nitrogen and phosphorus balance in the sewage plant tail water wetland. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing the arbitrary control tail water wetland filamentous algae breeding methyl cinnamate compound agent, comprising (i) dissolving the polyvinyl alcohol grafted polycaprolactone copolymer in 10-15 pts. wt. absolute ethanol, heating and stirring at 100-200 revolutions/minute, and continuously adding the nanometer graphene particles and the nano-ferrite particles of the weight part; (ii) heating cellulose acetate and sodium lauryl sulfate at 35-45°C and stirring to obtain a mixed solution with activated cellulose acetate; (iii) mixing mixed solution with activated cellulose acetate, methyl cinnamate in the weight part and mixture under 120-150°C, carrying out hydrothermal synthesis reaction 1-1.5 hours, filtering, gradually cooling to room temperature adopts ethanol and distilled water, washing for 5 times alternately, vacuum-drying at 50-60°C to obtain microcapsule nanoparticles embedded with methyl cinnamate; and (iv) stirring microcapsule nanoparticles embedded with methyl cinnamate of the group with sodium acetate and nitrifying bacteria agent. DESCRIPTION OF DRAWING(S) - The drawing using copper sulphate, prometryn and the composite agent provided by the invention after adding luminescent bacteria acute toxicity change column contrast. (Drawing includes non-English language text). 3Comparative example