The invention provides a preparation method for a hydrophobic associated amphoteric flocculant used for
industrial wastewater treatment, and relates to the technical field of
sewage treatment
engineering. The preparation method comprises the following steps: preparing modified
montmorillonite; adding dodecafluoroheptyl perfluorooctylethyl
acrylate and an emulsifier into deionized water, then adding
acrylamide, 2-acrylamido-2-methylpropanesulfonic acid,
itaconic acid and dimethyl diallyl
ammonium chloride, adding
triethylamine to adjust the pH value of a
system to be neutral, introducing
nitrogen to remove
oxygen, then adding an initiator, carrying out a heat preservation reaction for 8-12 h, carrying out
drying to remove water, carrying out
grinding and crushing, adding an obtained powderinto an
acetone /
ethanol mixed solution, and carrying out heating
reflux purification for 10-15 h so as to obtain a mixed
powder; and dispersing nanometer
silicon dioxide with a proper amount of
anhydrous butanone, then adding dispersed nanometer
silicon dioxide into a polyacrylate
emulsion, carrying out high-speed shearing dispersion, adding the above-mentioned mixed
powder, carrying out
drying ata temperature of 120-130 DEG C, and immersing an obtained material into an isopropanol solution of fluorosilane for 40-50 min. The hydrophobic associated amphoteric flocculant provided by the invention has good
adsorption effect on dyes and heavy
metal elements in industrial
wastewater and can be used for treating the industrial
wastewater.