Organic-inorganic hybrid flocculant and preparation method thereof
A flocculant and inorganic technology, applied in the field of organic-inorganic hybrid flocculant and its preparation, can solve the problems of unpurified, difficult to achieve flocculation effect, corrosion of water treatment equipment, etc. And ability, floc large and dense effect
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Embodiment 1
[0022] In the first step, weigh 2 g of polyaluminium chloride, dissolve it in 100 ml of distilled water, place it in a four-neck flask, add 1.02 ml of monomer dimethyldiallyl aqueous solution with a mass fraction of 40%, and add a mass fraction of 10 mg / L at the same time 2.4ml of tetrasodium edetate.
[0023] In the second step, place the above-mentioned four-neck flask in a constant temperature water bath at 60°C, pass high-purity nitrogen gas for 30 minutes, slowly add 2.8ml of ammonium persulfate solution with a concentration of 1g / L, and continue to pass nitrogen gas for 5 hours. after the end.
[0024] In the third step, the obtained solution was dried in an oven to constant weight to obtain an organic-inorganic hybrid flocculant with a PAC content of 77%.
Embodiment 2
[0026] In the first step, weigh 2 g of polyaluminium chloride, dissolve it in 100 ml of distilled water, place it in a four-neck flask, add 1.33 ml of monomer dimethyldiallyl aqueous solution with a mass fraction of 40%, and add a mass fraction of 10 mg / L at the same time 3.2ml of tetrasodium edetate.
[0027] In the second step, place the above-mentioned four-neck flask in a constant temperature water bath at 70°C, pass high-purity nitrogen gas for 30 minutes, slowly add 2.8ml of ammonium persulfate solution with a concentration of 1g / L, and continue to pass nitrogen gas for 3 hours. after the end.
[0028] In the third step, the obtained solution was dried in an oven to constant weight to obtain an organic-inorganic hybrid flocculant with a PAC content of 71%.
Embodiment 3
[0030] In the first step, weigh 2 g of polyaluminium chloride, dissolve it in 100 ml of distilled water, place it in a four-neck flask, add 1.67 ml of monomeric dimethyldiallyl aqueous solution with a mass fraction of 40%, and simultaneously add a mass fraction of 10 mg / L 2.4ml of tetrasodium edetate.
[0031] In the second step, place the above-mentioned four-neck flask in a constant temperature water bath at 50°C, pass high-purity nitrogen gas for 30 minutes, slowly add 2ml of ammonium persulfate solution with a concentration of 1g / L, and continue to pass nitrogen gas, and react for 4 hours End.
[0032] In the third step, the obtained solution was dried in an oven to constant weight to obtain an organic-inorganic hybrid flocculant with a PAC content of 67%.
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