Preparation method of composite efficient coagulant for treatment of textile printing and dyeing wastewater

[0031] A preparation method of composite high-efficiency coagulant for textile printing and dyeing wastewater treatment:

[0032] Mix fly ash and calcium fluoride at a weight ratio of 110:1, put them in an agate ball mill jar, add ethylene glycol as a ball milling aid, and turn on the ball mill for ball milling. During ball milling, the mixture of fly ash and calcium fluoride and the grinding balls The ball-to-material ratio is 3:1, ball milled for 12 hours, and the ball-milled material is first dried in an oven at 80°C for 12 hours, and then transferred to a muffle furnace to heat up to 600°C for 4 hours at a time, with a heating rate of 40°C / min , and then heated up to 710°C for 1 hour for the second time, and the second time was heated at a rate of 15°C / min. After natural cooling to room temperature, it was added to industrial waste sulfuric acid. It was extracted by acid leaching in a water bath at 95°C for 5 hours, and the filtrate was collected by filtration and poured i

[0038] A preparation method of composite high-efficiency coagulant for textile printing and dyeing wastewater treatment:

[0039] Mix fly ash and calcium fluoride at a weight ratio of 120:1, put them in an agate ball mill jar, add propylene glycol as a ball milling aid, and turn on the ball mill for ball milling. During ball milling, the mixture of fly ash and calcium fluoride and the balls The material ratio is 2:1, ball milled for 14 hours, and the ball milled materials are first dried in an oven at 80°C for 12 hours, then transferred to a muffle furnace and heated to 600°C for 4 hours, and the heating rate is 40°C / min. Raise the temperature to 720°C for 2 hours for 2 hours, the second temperature rise rate is 12°C / min, add it to industrial waste sulfuric acid after natural cooling to room temperature, and extract it by acid leaching in a water bath at 95°C for 5 hours, collect the filtrate by filtration, and pour it into the filter residue. Add industrial waste sulfuric ac

[0045] A preparation method of composite high-efficiency coagulant for textile printing and dyeing wastewater treatment:

[0046] Mix fly ash and calcium fluoride at a weight ratio of 100:1, put them in an agate ball mill jar, add polyacrylic acid as a ball milling aid, and turn on the ball mill for ball milling. During ball milling, the mixture of fly ash and calcium fluoride and the grinding ball The ball-to-material ratio is 3:1, and the ball mill is 15 hours. The ball-milled material is first dried in an oven at 80°C for 15 hours, and then transferred to a muffle furnace and heated to 600°C for 3 hours. The heating rate is 30°C / min. Then raise the temperature to 710°C for 2 hours, and the second heating rate is 10°C / min. After natural cooling to room temperature, add it to industrial waste sulfuric acid, and extract it by acid leaching in a water bath at 95°C for 5 hours, collect the filtrate by filtration, and pour it into the filter residue. Then add industrial waste su