▎ 摘 要
NOVELTY - Aquaculture water purifying agent comprises 50-60 pts. wt. construction waste, 10-13 pts. wt. fly ash, 6-8 pts. wt. graphene oxide, 4-6 pts. wt. nano titanium dioxide, 1-2 pts. wt. composite microbial agent, 10-12 pts. wt. chitosan, 10-12 pts. wt. carboxymethyl cellulose, 20-26 pts. wt. polymeric aluminum ferric sulfate and 8-12 pts. wt. polyacrylamide. USE - As aquaculture water purifying agent. ADVANTAGE - The agent utilizes the construction waste as skeleton, fills with chitosan cross-linked carboxymethyl cellulose in the middle as the wall material, and uses the graphene oxide, the nano titanium dioxide and the composite microbial agent are as the core microcapsules, supplemented by fly ash, polymeric aluminum ferric sulfate and polyacrylamide, achieves excellent water purification effect, successfully realizes the reuse of industrial waste and has excellent social benefits. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the aquaculture water purifying agent, involving (i) crushing construction waste into 10-20 mm particles, increasing the temperature from room temperature to 30-40 degrees C at a rate of 2-4 degrees C/minute, holding for 5-10 minutes, increasing the temperature to 50-60 degrees C at a rate of 6-8 degrees C and holding for 5-10 minutes, (ii) dissolving graphene oxide and composite microbial agent in distilled water, adding nano titanium dioxide, and ultrasonically dispersing to obtain a homogeneous solution, (iii) adding chitosan and carboxymethyl cellulose to the homogeneous solution, and uniformly stirring, (iv) spray-drying the solution obtained in step (iii) to obtain microcapsules, and (v) adding the polymeric aluminum ferric sulfate and the polyacrylamide into a solution, sequentially adding the construction waste granules, the microcapsules and the fly ash to the solution, and stirring and drying to obtain the water purifying agent.