Active carbon composite hydrophili polyurethane foamed microorganism fixed carrier
A technology for immobilization of hydrophilic polyurethane and microorganisms, which is applied in the fields of immobilization on/in organic carriers, biological water/sewage treatment, chemical instruments and methods, etc., and can solve problems such as poor adsorption capacity, small specific surface area, and high cost. problems, to achieve the effect of increasing the super adsorption force, increasing the contact area, and increasing the contact area
Examples
Embodiment 1
[0017] Example 1. Take 59.5 parts of polyether, 0.32 parts of water, 0.45 parts of silicone oil, 0.14 parts of reagent amine, 0.14 parts of catalyst, and 1.1 parts of activated carbon according to the mass, and put them into the stirring tank in turn. Add 5.35 parts of MLZ polymer water-absorbing agent in the state to make it evenly dispersed, then add 30 parts of toluene isocyanate and 3 parts of polyisocyanate, continue stirring evenly, put it in a mold for foaming, and cut it into 20mm×15mm×15mm Cube foam vector.
[0018] in a total volume of 0.35M 3 In the plastic aeration tank, add 20-30% of the reaction volume of the foam carrier, add the activated sludge supernatant or high-efficiency microbial flora, and then pass the industrial wastewater adjusted to pH=7-8 in advance to soak it in the tank Carrier, under the condition of stuffy exposure, the immobilization reaction is carried out by the synergistic effect of strong adsorption and valence bond combination. From the ...
Embodiment 2
[0019] Example 2. Take 54.43 parts of polyether, 0.85 parts of water, 1.1 parts of silicone oil, 0.17 parts of reagent amine, 0.17 parts of catalyst, and 2.75 parts of activated carbon according to the mass, and put them in a stirring tank in turn. Add 11 parts of MLZ polymer water-absorbing agent in the state to make it evenly dispersed, then add 27 parts of toluene isocyanate and 2.53 parts of polyisocyanate, continue stirring evenly, place it in a mold for foaming, and cut it into 20mm×15mm×15mm Cube foam vector.
[0020] After domestication and health preservation as in Example 1, add COD to be 548mg / L, NH 4 ＝ - Domestic sewage with N of 28mg / L, SS of 255mg / L and pH=7-8, start the aeration device to carry out contact oxidation reaction, the sewage has been biochemically treated for 4-6 hours, and the effluent index COD is 62mg / L, NH 4 ＝ -N is 8mg / L, SS is 65mg / L, reaching the national first-level emission standard.
Embodiment 3
[0021] Example 3. Take 56 parts of polyether, 0.60 parts of water, 0.8 parts of silicone oil, 0.16 parts of reagent amine, 0.16 parts of catalyst, and 1.9 parts of activated carbon according to the mass, and put them in a stirring tank in turn. Add 9.58 parts of MLZ polymer water-absorbing agent in the state to make it evenly dispersed, then add 28 parts of toluene isocyanate and 2.8 parts of polyisocyanate, continue stirring evenly, put it in a mold for foaming, and cut it into 20mm×15mm×15mm Cube foam vector.
[0022] In a circular plastic tank with a volume of 0.1M3, an outlet weir is set on the upper end and a gas collection device is installed on the top to form an anaerobic bioreactor; the other two tanks are open at the top, also have an upper outlet weir and have the same volume as 0.1M3 A circular plastic tank constitutes an aerobic bioreactor. Filter screens are set up and down inside the reactor for carrying activated carbon composite hydrophilic polyurethane foam ...
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Description
Claims
Application Information
- IPC
- C02F3/32; C08G18/02; C12N11/08
- Inventors
- 李彦锋; 周林成