Preparation method of composite material
A composite material and polymer technology, applied in the directions of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problems of low fluoride ion adsorption capacity and low fluorine removal efficiency, and achieve high efficiency The effect of removing fluorine, improving the ability of removing fluorine, and improving the adsorption capacity
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Embodiment 1
[0041] The method for the depth of water body defluoridation of the present embodiment 1 comprises the following steps:
[0042] (a) Prepare simulated fluorine-containing wastewater with a fluoride concentration of 5 mg / L, SO 4 2- , Cl - , NO 3 - The contents are 50mg / L, 30mg / L, and 8mg / L respectively. After filtering, adjust the pH of the raw water to 5.5;
[0043] (b) The simulated adsorption tower device is filled with polymer-based composite materials, and the simulated fluorine-containing wastewater passes through the adsorption tower at a temperature of 7±2°C with a flow rate of 2BV / h. combine figure 1 , figure 2 , the polymer-based composite material used in this step (b), the matrix is styrene-divinylbenzene copolymer spheres, the particle size distribution is between 0.5-0.8mm, the pore size distribution is between 5-50nm, and it contains rich The nanopore structure and positively charged functional groups can pre-concentrate negatively charged fluoride ion...
Embodiment 2
[0052] The method for the depth of water body defluoridation of present embodiment 2 comprises the following steps:
[0053] (a) Prepare simulated fluorine-containing wastewater, the fluorine concentration is 10mg / L, SO 4 2- , Cl - , NO 3 - The contents are 50mg / L, 30mg / L, and 8mg / L respectively. After filtering, adjust the pH of the raw water to 3.0;
[0054] (b) A simulated adsorption tower device, filled with polymer-based composite materials, and the simulated fluorine-containing wastewater passes through the adsorption tower at a temperature of 25±5°C with a flow rate of 6BV / h; the polymer used in step (b) Matter-based composite material, the matrix is styrene-divinylbenzene copolymer spheres, the particle size distribution is between 0.8-1.0mm, and the pore size distribution is between 40-80nm. The polymer contains rich nanoporous structure and positively charged functions. group, which can pre-enrich negatively charged fluoride ions. Hydrated zirconia nanopartic...
Embodiment 3
[0063] The method for the depth of water body defluoridation of present embodiment 3 comprises the following steps:
[0064] (a) Prepare simulated fluorine-containing wastewater with a fluoride concentration of 2mg / L, SO 4 2- , Cl - , NO 3 - The contents are 50mg / L, 30mg / L, and 8mg / L respectively. After filtering, adjust the pH of the raw water to 3.5;
[0065] (b) A simulated adsorption tower device, the tower is filled with polymer-based composite materials, and the simulated fluorine-containing wastewater passes through the adsorption tower at a temperature of 35±5°C with a flow rate of 10BV / h; the polymer used in step (b) Matter-based composite material, the matrix is styrene-divinylbenzene copolymer spheres, the particle size distribution is between 1.0-1.5mm, and the pore size distribution is between 60-100nm. The polymer contains rich nanoporous structure and positively charged functions. group, which can pre-enrich negatively charged fluoride ions. Hydrated zir...
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