Polymeric titanium sulfate-PDMDAAC (poly dimethyl diallyl ammonium chloride) composite coagulant as well as preparation and application methods thereof
A technology of polydimethyldiallyl ammonium chloride and polysulfuric acid is applied in the direction of flocculation/sedimentation water/sewage treatment to achieve the effects of high molecular weight, good flocculation effect and strong practicability
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[0025] Example
[0026] (1) Weigh 12.5g Ti(SO 4 ) 2 Dissolve in 150mL of pure water, add NaOH with a concentration of 240g / L dropwise under continuous stirring, the dropwise volume is 4.34mL, 8.68mL, 13.02mL, 17.36mL, 26.04mL, and the dropping time is controlled within 20-40min After the dropping, continue to stir for 1 hour to obtain a polymerized titanium sulfate solution with an alkalinity (B) of 0.5, 1.0, 1.5, 2.0, 2.5.
[0027] (2) Divide the polymerized titanium sulfate solution with different alkalinity into five equal parts, according to the Ti / PDMDAAC mass ratio of 10, 8, 6, 4, 0 (for comparison), add a certain quality of PDMDAAC and continue stirring for 3 hours , The insoluble matter is filtered off, and the polymerized titanium sulfate-polydimethyldiallylammonium chloride organic polymer composite flocculant with different alkalinity and Ti / PDMDAAC mass ratio is prepared.
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