Magnetcisuspension polycoagulant, preparation method and application
A technology of coagulant and magnetic suspension, which is used in flocculation/sedimentation water/sewage treatment, etc., can solve the problems of restricting the application of rare earth disks, and achieve the effects of high oil removal and turbidity reduction, short treatment process, and small footprint.
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Embodiment 1
[0010] Magnetic suspension coagulant 1130 kg, prepared from 550 kg of 10% polyacrylic acid liquid with a molecular weight of 6 million to 8 million, 300 kg of 30% polyaluminum silicate solution, 50 kg of ferrous hydroxide, 30 kg of diatomaceous earth, and 200 kg of water made. The steps to prepare the magnetic suspension coagulant are: (1) add 200 kg of water and 550 kg of polyacrylic acid liquid into the reaction kettle and stir evenly; (2) add 50 kg of ferrous hydroxide and heat to 50°C to generate polyacrylic acid (3) add 30 kilograms of diatomite, stir, and the stirring speed is 200 rpm, and the stirring time is 25 minutes, so that it is fully mixed; (4) add 300 kilograms of polysilicate aluminum solution, stir, and the stirring speed is 200 rev / min, the stirring time is 80 minutes to make the magnetic suspension coagulant.
[0011] Taking a steel rolling mill as an example, the application and effect of the magnetic suspension coagulant in cooperating with rare earth dis...
Embodiment 2
[0024] 85 kg of magnetic suspension coagulant, prepared from 30 kg of 6% polyacrylic acid liquid with a molecular weight of 6 million to 8 million, 40 kg of 21% polyaluminum silicate solution, 3 kg of ferrous hydroxide, 2 kg of diatomaceous earth, and 10 kg of water made. The steps to prepare the magnetic suspension coagulant are: (1) add 10 kg of water and 30 kg of polyacrylic acid liquid into the reaction kettle, and stir evenly; (2) add 3 kg of ferrous hydroxide, and heat to 45°C to generate polyacrylic acid (3) add 2 kilograms of diatomite, stir, and the stirring speed is 180 rpm, and the stirring time is 20 minutes, so that it is fully mixed; (4) add 40 kilograms of polysilicate aluminum solution, stir, and the stirring speed is 180 rev / min, stirring time is 60 minutes to make the magnetic suspension coagulant. The magnetic suspension coagulant can be used with rare earth disk equipment to treat sewage containing suspended solids and oil, such as sewage treatment in iron...
Embodiment 3
[0025] Embodiment 3: 129 kilograms of magnetically suspended coagulants, 60 kilograms of polyacrylic acid liquid, 20 kilograms of 40% polyaluminum silicate solution, 9 kilograms of ferrous hydroxide, 10 kilograms of diatomaceous earth by 13% molecular weight at 6 million to 8 million polyacrylic acid liquids, Made of 30kg of water. The steps to prepare the magnetic suspension coagulant are: (1) add 30 kg of water and 60 kg of polyacrylic acid liquid into the reaction kettle and stir evenly; (2) add 9 kg of ferrous hydroxide and heat to 69°C to generate polyacrylic acid (3) add 10 kilograms of diatomite, stir, and the stirring speed is 235 rpm, and the stirring time is 30 minutes, so that it is fully mixed; (4) add 20 kilograms of polysilicate aluminum solution, stir, and the stirring speed is 235 rev / min, the stirring time is 85 minutes to make the magnetic suspension coagulant. The magnetic suspension coagulant can be used with rare earth disk equipment to treat sewage conta...
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