Preparation method of composite flocculant
A composite flocculant and sodium bisulfite technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of incomplete treatment of pollutants, insufficient chroma, complex components, etc., and improve the efficiency of sewage treatment , reduce sewage turbidity, rapid proliferation effect
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[0013] The preparation method of composite flocculant, its raw materials include crystalline aluminum chloride, sodium hydroxide, sulfuric acid, sodium bisulfite, ammonium persulfate, acrylamide, N,N-dimethyl-N-octadecanoyl benzyl chloride Ammonium, octadecyltrimethylammonium chloride and MMH, and are prepared according to the following ratio and steps:
[0014] 1) Synthesis of ternary graft copolymer: Install a PTFE stirrer, reflux condenser, thermometer and air guide tube on a 250mL four-necked flask, place the four-necked flask in a constant temperature water bath at 40°C, and add a certain amount of The monomer aqueous solution (the total mass fraction of acrylamide, N,N-dimethyl-N-octadecanoyl benzyl ammonium chloride and octadecyl trimethyl ammonium chloride is 28% to 35% respectively, and the monomer The molar ratio is 1.5~2:0.5~1:0.5~1), pass through ammonia to deoxygenate for 0.5h, under stirring, then slowly add dropwise (total mass fraction of ammonium persulfate an...
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