Preparation method and application of porous hydrophilic denitrification biological carrier
A biological carrier and hydrophilic technology, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems such as hindering popularization and application, large volume, and difficulty in applying a magnetic field, and achieve remarkable results. Effect of high self-acidification rate and increased oxygen concentration
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[0013] The preparation method of the porous hydrophilic denitrification biological carrier is: polyether polyol, polymer polyol, black slurry, dichloromethane , surfactant, amine catalyst, tin catalyst and water are added to the reaction kettle and stirred. The temperature in the reaction kettle is 23-27°C. After adding 52.5 parts by mass of activator, the second stirring is carried out. After the second stirring is uniform , adding 62.5 parts by mass of toluene diisocyanate, stirring for three times evenly, and then forming by reaction, putting the polyurethane foam formed by the reaction into a stripping tank for blasting and stripping to obtain a magnetic biological denitrification carrier.
[0014] The composition mass parts of the active agent are: 1:2-5:0-3:2-5 nano-iron, modified substance, powdered activated carbon, and the modified substance is modified bentonite or zeolite.
[0015] The porous hydrophilic denitrification biological carrier is used for the biochemical...
Embodiment 1
[0027] The mass parts are: 75:25:3:2:0.25:0.25:0.3:5 polyether polyol, polymer polyol, black pulp, methylene chloride, surfactant, amine catalyst, tin catalyst and water are added In the reaction kettle, stir, the temperature in the reaction kettle is 23°C, add mass parts: 52.5 active agent and then carry out the second stirring, after the second stirring is uniform, add mass parts: 62.5 toluene diisocyanate, stir three times evenly After reaction molding, put the reaction-molded polyurethane foam into a stripping tank for blasting stripping to obtain a magnetic biological denitrification carrier. Divide the bulky carrier into small porous net-like hydrophilic, magnetic, and catalytic oxidation denitrification biological carriers through a cutting machine as needed. The composition mass parts of the active agent are: 1:2-5:0-5 nano-iron, modified bentonite, powdered activated carbon.
[0028] The porous hydrophilic denitrification biological carrier is used for the biochemica...
Embodiment 2
[0030] The mass parts are: 75:25:3:2:0.25:0.25:0.3:5 polyether polyol, polymer polyol, black pulp, methylene chloride, surfactant, amine catalyst, tin catalyst and water are added In the reaction kettle, stir, the temperature in the reaction kettle is 27°C, add mass parts: 52.5 active agents and then perform secondary stirring. After the secondary stirring is uniform, add mass parts: 62.5 toluene diisocyanate, and stir three times evenly After reaction molding, put the reaction-molded polyurethane foam into a stripping tank for blasting stripping to obtain a magnetic biological denitrification carrier. Divide the bulky carrier into small porous networked hydrophilic and magnetic total nitrogen removal biological carriers through a cutting machine as needed. The composition mass parts of the active agent are: 1:2-3:2-5 nano-iron, zeolite, powdered activated carbon.
[0031] The porous hydrophilic denitrification biological carrier is used for the biochemical treatment of refra...
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