Amphoteric or cationic polymeric flocculating agent
A polymer flocculant, cationic technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., to achieve the effect of high phase transformation ability, strong adsorption capacity and high reactivity
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Embodiment 1
[0026] Add 23.75g of deionized water, 1.1875g of acrylamide, 0.0375g of morpholine ethyl acrylate hydrochloride and 0.025g of acrylic acid into a stoppered graduated test tube with a capacity of 25ml, dissolve and mix well. Use 1 mol / L NaOH solution and 1 mol / L hydrochloric acid to adjust the pH value of the aqueous solution of the polymerization reaction system to 2, cool in an ice-water bath, and pass nitrogen gas for 15 minutes to remove oxygen. Join 1.875×10 -4 g of potassium persulfate and 0.855×10 -4Oxidation-reduction initiator system composed of sodium sulfite of g, stop the nitrogen gas flow and plug the test tube tightly to prevent air from entering, polymerize for 6 hours at 20°C, and obtain a translucent colloid, which is an amphoteric polymer with high-efficiency phase transition ability. The colloid of the flocculant; the powder of the amphoteric polymer flocculant is obtained after the colloid is granulated, dried, crushed, and sieved. It has high phase transit...
Embodiment 2
[0028] Add 22.5g deionized water, 2.125g acrylamide, 0.225g morpholine ethyl acrylate methyl quaternary ammonium salt and 0.025g acrylic acid into a stoppered graduated test tube with a capacity of 25ml, dissolve and mix well. Use 1 mol / L NaOH solution and 1 mol / L hydrochloric acid to adjust the pH value of the aqueous solution of the polymerization reaction system to 7.4, cool in an ice-water bath, and pass nitrogen gas for 20 minutes to remove oxygen. Join 0.208×10 -4 g of ammonium persulfate and 0.095×10 -4 Oxidation-reduction initiator system composed of sodium sulfite of g, stop the nitrogen flow and plug the test tube stopper tightly to prevent air from entering, and react at 25°C for 6 hours to obtain a translucent colloid, which is an amphoteric polymer flocculation with high-efficiency phase transition ability. The colloid of the agent; the colloid is granulated, dried, crushed and sieved to obtain the powder of the amphoteric polymer flocculant, which has high phase...
Embodiment 3
[0030] Add 20g of deionized water, 2.5g of methacrylamide, 2.25g of morpholine ethyl acrylate hydrochloride and 0.25g of 2-acrylamido-2-methylpropanesulfonic acid into a stoppered graduated test tube with a capacity of 25ml, Dissolve and mix well. Use 1 mol / L NaOH solution and 1 mol / L hydrochloric acid to adjust the pH value of the aqueous solution of the polymerization reaction system to 7.0, cool in an ice-water bath, and pass nitrogen gas for 25 minutes to remove oxygen. Add 0.832×10 -4 g potassium persulfate and 0.18×10 -4 For an oxidation-reduction initiator system composed of sodium sulfite, stop the nitrogen flow and plug the test tube tightly to prevent air from entering, and react at 5°C for 12 hours to obtain a translucent colloid, which is an amphoteric polymer flocculant with high-efficiency phase transition ability. The colloid; the colloid is granulated, dried, pulverized, and sieved to obtain the powder of the amphoteric polymer flocculant, which has high phas...
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