▎ 摘　　要

NOVELTY - A wastewater treatment agent comprises 25-30 wt.% activated carbon, 10-20 wt.% nanoparticles, 10-25 wt.% flocculant, 2-8 wt.% microbial bacteria, 5-10 wt.% zinc dihydrogen phosphate, 1-5 wt.% hypochlorous acid, 5-10 wt.% ferrosilicon copolymer, 1-5 wt.% citric acid, and 1-5 wt.% ferrous sulfate. USE - Wastewater treatment agent. ADVANTAGE - The wastewater treatment agent has excellent chemical oxygen demand and biochemical oxygen demand removal rates. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the wastewater treatment agent, which involves: (S1) preparing the ferrosilicon copolymer by mixing sodium silicate and ferrate in a molar ratio of 3:2; (S2) preparing the microbial bacteria by mixing Pseudomonas monteilii, Flavobacterium mizutaii and Ochrobactrum in a volume ratio of (40-60):(20-30):(20-30) to obtain microbial bacteria liquid mixture; (S3) dispersing activated carbon and nanoparticles in a weight ratio of (25-30):(10-20) in deionized water and ultrasonically dispersing with an ultrasonic instrument for 20-30 minutes, then slowly increasing the temperature of the reaction system to 60-65 degrees C, continuously stirring and reacting for 4-6 hours, centrifuging the reaction system to collect the lower sediment, washing 2-3 times with ethanol, vacuum drying, crushing and grinding to a particle size of 100-200 mesh to obtain a mixed powder; (S4) adding the mixed powder to 0.1-0.5 M hydrochloric acid solution, then adding flocculant, zinc dihydrogen phosphate, hypochlorous acid, citric acid and ferrous sulfate, stirring and reacting at 45-50 degrees C for 20-30 minutes under nitrogen atmosphere, cooling to room temperature, adding 0.1-0.3 M sodium hydroxide solution to adjust the pH to 6-7, then adding the microbial bacteria liquid mixture and ferrosilicon copolymer, continuously stirring and reacting for 40-50 minutes under nitrogen atmosphere.