Method for removing fluoride in drinking water by complexation-coacervation-adsorption with defluorination adsorption material based on aluminium base composite metal oxide
An aluminum-based composite and adsorption material technology, which is applied in chemical instruments and methods, water pollutants, water/sewage multi-stage treatment, etc. and other problems, to achieve the effect of improving adsorption performance, simple and easy method, and reducing the cost of defluorination treatment
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Embodiment 1
[0029] Adopt the method disclosed in ZL200810226262.4 to prepare the fluorine removal adsorption material based on aluminum-based composite oxide, the specific method is as follows: use ceramsite with a particle size range of 1 mm to 4 mm as the porous loading matrix, and fill it into a columnar water purification reactor Medium; respectively prepared at a concentration of 100Kg / m 3 Al 2 (SO 4 ) 3 solution and 15Kg / m 3 KOH lye. pump Al 2 (SO 4 ) 3 The solution is pumped into the water purification reactor until the ceramsite is submerged and the pumping of Al is stopped 2 (SO 4 ) 3 solution, the Al 2 (SO 4 ) 3 The solution is released; then pump the KOH lye into the water purification reactor until the ceramsite is submerged and stop pumping the NaOH solution. After 30 minutes of immersion, the NaOH solution flows out, and it is allowed to stand intermittently for 15 minutes. Repeat the above method 2 times. Make Al 2 (SO 4 ) 3 The aluminum-based composite oxi...
Embodiment 2
[0036] Adopt the method disclosed in ZL200810226262.4 to prepare the fluorine removal adsorption material based on aluminum-based composite oxide, the specific method is as follows: use bone charcoal with a particle size range of 0.5 mm to 1 mm as the porous loading matrix, and fill it into a columnar water purification reactor Medium; respectively prepared concentration of 50Kg / m 3 Polyaluminum chloride (PAC) solution and 4Kg / m 3 NaOH lye. Use a pump to pump the PAC solution into the water purification reactor until the bone charcoal is submerged and stop pumping the PAC solution, and release the PAC solution after 60 minutes of immersion; then pump the KOH lye into the water purification reactor until the bone charcoal is submerged and stop Pump in the NaOH solution, let the NaOH solution flow out after soaking for 30 minutes, and let it stand for 30 minutes intermittently. Repeat the above method 3 times. The aluminum-based composite oxide prepared by the chemical reacti...
Embodiment 3
[0043] The method disclosed in ZL200810226262.4 is used to prepare the fluorine removal adsorption material based on aluminum-based composite oxides. The specific method is as follows: use magnetite with a particle size range of 0.8 mm to 2.0 mm as the porous loading matrix, and fill it into a columnar reaction In the device; respectively prepare the concentration of 100Kg / m 3 AlCl 3 solution and 10Kg / m 3 NaOH lye. pump AlCl 3 The solution is pumped into the column reactor until the magnetite is submerged and the pumping of AlCl is stopped 3 solution, AlCl after 60 minutes of immersion 3 The solution is released; pump the NaOH lye into the columnar reactor until the magnetite is submerged and stop pumping the NaOH solution. After 30 minutes of immersion, the NaOH solution flows out, and it is allowed to stand intermittently for 30 minutes. Repeat the above method 3 times. Make AlCl 3 The aluminum-based composite oxide prepared by the chemical reaction between the soluti...
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