The invention provides a synthesis method and application of a
water soluble chitosan-based flocculant. The method comprises the steps of adding
chitosan into acid solution, adding acylated
monomer aqueous solution into the acid solution, uniformly stirring and mixing, performing vibration reaction for 1 to 10 h at 5 to 60 DEG C, performing
precipitation and purification through ethyl
alcohol and
acetone,
drying, and obtaining N-acylated
chitosan; sequentially adding the N-acylated chitosan, deionized water,
acrylamide and strong cation
functional monomer into a reactor, uniformly stirring, leading
nitrogen into homogenous solution to remove
oxygen, adding a
photoinitiator and a cosolvent, uniformly stirring and mixing, putting the raw materials into an
ultraviolet light reaction device to perform
polymerization reaction,
drying, performing
granulation and
powder process, and obtaining the
water soluble chitosan-based flocculant; the flocculant can be used for the removal treatment of alga in
source water. The flocculant is good in
solubility property, high in
viscosity coefficient and short in synthesis time, does not need temperature reduction control, simplifies the production technology, reduces
energy consumption, and reduces the production cost.