The basicity of polymeric titanium flocculant is 15 ~ 27. When it is close to zero, polymeric titanium chloride flocculant also has good coagulation effect, which is obviously higher than aluminum flocculant and iron flocculant, and its application range is wider.

The invention relates to a polymeric titanium flocculant and a preparation method and application thereof. Flocculant A titanium-containing compound is mixed with a strong acid aqueous solution to obtain an acidic titanium salt solution, which is cooled and diluted.