Organic-inorganic ionic hetero high efficiency flocculant

Abstract

The efficient flocculant consists of hydroxide colloid 0.5-15 wt%, acrylamide 50-95 wt% and cationic monomer 0-45 wt%. The hydroxide colloid may be aluminum other, iron hydroxide, magnesium hydroxide or zinc other, and has colloid size of 10-200 nm. The cationic monomer includes DMDAAC or DMC. The organic-inorganic hetero efficient flocculant has in-situ polymerized acrylamide / cationic monomer copolymer linked to the surface of charged inorganic colloid particle, so that it has the synergistic effect of electrically neutralizing effect of inorganic flocculant and the bridging effect of organic polymer and greatly raised flocculating efficiency.

Description

technical field [0001] The invention relates to water treatment chemicals, in particular to an organic-inorganic ion hybrid high-efficiency flocculant. Background technique [0002] Inorganic flocculants have the characteristics of strong charge neutralization ability, fast action, low toxicity, wide source of raw materials, and low cost of use. Compared with inorganic flocculants, organic polymer flocculants have the advantages of less dosage, faster flocculation, Coexistence of salts, little influence of pH value and temperature, less sludge generation, and easy handling. Usually, inorganic flocculants and organic polymer flocculants have to be added step by step to have a better synergistic effect, that is, first The inorganic flocculant exerts electrical neutralization and destroys the stability of the suspended colloidal particles in the wastewater, and then the organic macromolecule further bridges to produce large and solid flocs, and the organ...

AI Technical Summary

Problems solved by technology

[0002] Inorganic flocculants have the characteristics of strong charge neutralization ability, fast action, low toxicity, wide source of raw materials, and low cost of use. Compared with inorganic flocculants, organic polymer flocculants have the advantages of less dosage, faster flocculation, Coexistence of salts, little influence of pH value and temperature, less sludge generation, and easy handling. Usually, inorganic flocculants and organic polymer flocculants have to be added step by step to have a better synergistic effect, that is, first The inorganic flocculant exerts electrical neutralization and destroys the stability of the suspended colloidal particles in the wastewater, and then the organic macromolecule further bridges to produce large and solid flocs, and the organic and inorganic flocculants are mechanically mixed to make a composite flocculant. The electrolyte effect of the flocculant leads to the shrinkage of the organic polymer chain in the solution, especially with the extension of storage, the viscosity of the composite flocculant decreases, and the effect is significantly reduced