Preparation method of biofilm carrier
A biofilm carrier and preparation step technology, applied in the field of water treatment, can solve the problems of affecting the use effect of biofilm, high difficulty in attaching microorganisms, poor hydrophilicity of the carrier, etc., so as to reduce the difficulty of attachment, shorten the film hanging time, and achieve biocompatibility. good effect
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example 1
[0026] Weigh 5kg of diatomaceous earth and spray it with liquid nitrogen to freeze for 3min, transfer the frozen diatomaceous earth into a stone mortar, mash it with a stone pestle for 2h, and then put the mashed diatomaceous earth into an oven at 110°C Dry for 40 minutes. After drying, move to a pulverizer and continue to pulverize for 30 minutes, and screen out diatomaceous earth particles with a particle size of 3mm; mix diatomaceous earth particles with a mass concentration of 4g / L dopamine solution at a mass ratio of 1:5 Obtain the mixed solution, and adjust the pH of the mixed solution to 8.2 with a concentration of 0.5mol / L sodium hydroxide solution, and then transfer the mixed solution into an ultrasonic oscillator, ultrasonically shake at a frequency of 50kHz for 30min, then stand for 2h, filter and separate to obtain a filter residue ; Weigh 20g of white phosphorus and ignite it to burn, collect the burned product, mix the burned product with absolute ethanol at a mass...
example 2
[0028] Weigh 4kg of diatomaceous earth and spray it with liquid nitrogen to freeze for 2min, transfer the frozen diatomaceous earth into a stone mortar, mash it with a stone pestle for 1h, and then put the mashed diatomaceous earth into an oven at 105℃ Dry for 30 minutes. After drying, move to a pulverizer and continue to pulverize for 20 minutes. Diatomite particles with a particle size of 1mm are screened out; the diatomite particles are mixed with a dopamine solution with a mass concentration of 4g / L according to a mass ratio of 1:5 Obtain the mixed solution, and adjust the pH of the mixed solution to 8.0 with a concentration of 0.5mol / L sodium hydroxide solution, and then transfer the mixed solution into an ultrasonic oscillator, ultrasonically oscillate at a frequency of 40kHz for 20 minutes, then stand for 1h, filter and separate to obtain a filter residue ; Weigh 10g of white phosphorus and ignite it to burn, collect the burned product, mix the burned product with absolut...
example 3
[0030] Weigh 4kg of diatomaceous earth and spray it with liquid nitrogen to freeze for 2 minutes, transfer the frozen diatomaceous earth into a stone mortar, mash it with a stone pestle for 1 hour, and then put the mashed diatomaceous earth into an oven at 107℃ Dry for 35 minutes. After drying, move to a pulverizer and continue to pulverize for 25 minutes, and screen out diatomaceous earth particles with a particle size of 2mm; mix the diatomaceous earth particles with a dopamine solution with a mass concentration of 4g / L according to a mass ratio of 1:5 Obtain the mixed solution, and adjust the pH of the mixed solution to 8.1 with a concentration of 0.5mol / L sodium hydroxide solution, then transfer the mixed solution into an ultrasonic oscillator, ultrasonically oscillate at a frequency of 45kHz for 25min, then stand for 2h, filter and separate to obtain a filter residue ; Weigh 15g of white phosphorus and ignite it to burn, collect the burned product, mix the burned product wi...
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