Biofilm for wastewater treatment and preparation method thereof
A technology for wastewater treatment and biofilm, which is used in special compound water treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. For problems such as low treatment rate of refractory pollutants, it can achieve the effects of shortening fixing time, good compatibility and easy realization
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Embodiment 1
[0039] A method for preparing biofilm for wastewater treatment, comprising the following steps:
[0040] a. According to the weight ratio, take 20 parts of polylactic acid and 4 parts of formic acid solution, add them to the reaction kettle, stir evenly, then heat to 87 ° C, then add 10 parts of soybean protein isolate, and stir for 150 minutes;
[0041] Wherein, the mass fraction of formic acid solution is 30%.
[0042] b. Cool down to 50°C, add 4 parts of polyvinyl alcohol and 0.2 parts of manganese acetate, then raise the temperature to 96°C for 64 minutes, then cool down to 60°C;
[0043] c. Keep the temperature at 60°C, add 14 parts of ceramic powder, stir for 12 minutes, and then glue out to get glue;
[0044] Wherein, the ceramic powder includes the following raw materials in parts by weight: 52 parts of kaolinite, 11 parts of ethanol, 2 parts of sodium dodecylsulfonate, 0.2 part of ammonium nitrate, and 0.2 part of potassium dihydrogen phosphate.
[0045] The prepara...
Embodiment 2
[0054] A method for preparing biofilm for wastewater treatment, comprising the following steps:
[0055] a. According to the weight ratio, take 38 parts of polylactic acid and 10 parts of formic acid solution, add them to the reaction kettle, stir evenly, then heat to 94 ° C, then add 28 parts of soybean protein isolate, and stir for 190 minutes;
[0056] Wherein, the mass fraction of formic acid solution is 80%.
[0057] b. Cool down to 72°C, add 10 parts of polyvinyl alcohol and 0.8 parts of manganese acetate, then pass in nitrogen, then raise the temperature to 120°C for 90 minutes, then cool down to 82°C;
[0058] c. Keep the temperature at 82°C, add 24 parts of ceramic powder, stir for 28 minutes, and then glue out to get glue;
[0059] Wherein, the ceramic powder includes the following raw materials by weight: 72 parts of kaolinite, 20 parts of ethanol, 4 parts of sodium dodecylsulfonate, 1.6 parts of ammonium nitrate, and 1.1 parts of potassium dihydrogen phosphate.
...
Embodiment 3
[0069] A method for preparing biofilm for wastewater treatment, comprising the following steps:
[0070] a. According to the weight ratio, take 33 parts of polylactic acid and 8.5 parts of formic acid solution, add them to the reaction kettle, stir evenly, then heat to 88 ° C, then add 15 parts of soybean protein isolate, and stir for 160 minutes;
[0071] Wherein, the mass fraction of formic acid solution is 43%.
[0072] b. Cool down to 55°C, add 5.5 parts of polyvinyl alcohol and 0.4 parts of manganese acetate, then pass in nitrogen, then raise the temperature to 102°C for 70 minutes, then cool down to 65°C;
[0073] c. Keep the temperature at 65°C, add 17 parts of ceramic powder, stir for 16 minutes, and then glue out to get glue;
[0074] Wherein, the ceramic powder includes the following raw materials in parts by weight: 57 parts of kaolinite, 13 parts of ethanol, 2.4 parts of sodium dodecylsulfonate, 0.5 part of ammonium nitrate, and 0.4 part of potassium dihydrogen ph...
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