A kind of preparation method of quaternary compound algicide
The technology of algaecide and sulfomethylated polyacrylamide is applied in the field of preparation of quaternary compound algaecide, which can solve the problems of low efficiency of cyanobacteria treatment, and achieve excellent flocculation-aiding effect, strong adsorption effect, and excellent bridging effect. Ability and Effects of Extended Space
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[0026] The present invention provides a kind of preparation method of quaternary compound algicide on the one hand, comprises the following steps:
[0027] Step 1, preparation of sulfomethylated polyacrylamide: dissolving polyacrylamide in water to form an aqueous solution, adding sodium hydroxide solution to the aqueous solution to adjust the pH value, and then adding a certain amount of formaldehyde, sodium sulfite and potassium sulfite, After raising the temperature and reacting for a period of time, cooling, washing and drying to obtain the desired sulfomethylated polyacrylamide;
[0028] Step 2, configuration of polyvinyl alcohol aqueous solution: weigh polyvinyl alcohol with an average molecular weight of 14000-17000, and configure polyvinyl alcohol aqueous solution;
[0029] Step 3: Weigh micron-level aluminum oxide, fumed nano-silica, porous cross-linked polystyrene microspheres, and the sulfomethylated polyacrylamide prepared in step 1, and mix them uniformly. Add in...
Embodiment 1
[0047] Preparation of sulfomethylated polyacrylamide:
[0048] Dissolve polyacrylamide in water and configure it into an aqueous solution. The mass fraction of the polyacrylamide aqueous solution is 15%. Add sodium hydroxide solution to the polyacrylamide aqueous solution to adjust the pH value to 9, and then add a certain amount of formaldehyde, sodium sulfite and sulfite. Potassium sulfate, raised the temperature to 55°C and reacted for 5 hours, cooled, washed and dried to obtain the desired sulfomethylated polyacrylamide. In parts by weight, the parts by weight of polyacrylamide, formaldehyde, sodium sulfite and potassium sulfite are 5:4:4:2 in sequence.
Embodiment 2
[0050] A preparation method of a quaternary compound algicide, comprising the following steps:
[0051] Step 1, configuration of polyvinyl alcohol aqueous solution: in parts by weight, weigh 1 part of polyvinyl alcohol and 5 parts of water, and mix them uniformly to prepare a polyvinyl alcohol aqueous solution;
[0052] Step 2, in parts by weight, weigh 1 part of micron-sized aluminum oxide, 3 parts of fumed nano-silica, 0.5 part of porous cross-linked polystyrene microspheres and the sulfomethylated polystyrene prepared in Example 1. 5 parts of acrylamide, mix evenly, add the uniformly mixed components into the polyvinyl alcohol aqueous solution configured in step 2, and stir to obtain a mixed solution; wherein micron-level aluminum oxide, fumed nano-silica, porous cross-linked The weight ratio of the total weight of the polystyrene microspheres and the sulfomethylated polyacrylamide prepared in Example 1 to the aqueous solution of polyvinyl alcohol was 1:5.
[0053] Step 3,...
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