Water-based paint mist coagulant, and preparation method and application thereof

Abstract

The invention discloses a water-based paint mist coagulant, and a preparation method and an application thereof. The water-based paint mist coagulant is composed of an anti-sticking agent A and a flocculating agent B. The effective components of the anti-sticking agent A are an inorganic metal salt and a cationic monomer, the mass ratio of the inorganic metal salt to the cationic monomer is (8-12): 1, and the mass percentage of the effective components in the anti-sticking agent A is 5-40%. The effective components of the flocculating agent B are two of xanthan gum, welan gum, polyacrylamide and lignin, and the mass percentage of the effective components in the flocculating agent B is 0.1-3%. Through the combination and proportioning, the flocculation is fast; the decolorization rate is high; paint slag is not easy to sink and can float upwards for a long time, so that the clarity of the wastewater can be ensured; the water-based paint mist coagulant has good viscosity reduction and coagulation effects on water-based paints, the water-based paints can be thoroughly debonded, floating paint slag can be bonded into large blocks, fishing is easy, and pH does not need to be adjusted.

Description

technical field [0001] The invention relates to the technical field of paint-containing wastewater treatment, in particular to a water-based paint mist coagulant and its preparation method and application. Background technique [0002] When using oil-based paint for painting, because the oil-based paint contains toxic benzene compounds and other substances, a large amount of harmful gases will be generated during the painting process, which will damage human health, and the discharged wastewater will also seriously endanger the environment. As the country begins to pay attention to the protection of the ecological environment, environmental protection requirements are becoming more and more stringent. Water-based paint uses water as a diluent, which does not use organic solvents, has good environmental protection characteristics, is non-flammable, does not contain carcinogens, and is less harmful to humans. Favored by more and more painting users, the use of water-based pain...

AI Technical Summary

Problems solved by technology

[0006] In the above-mentioned technology, the paint mist coagulant is a double-dose type, that is, the anti-tack agent is used in conjunction with the flocculant, but the inventor of the present application found that the above-mentioned technology has at least the following technical problems in the process of realizing the embodiment of the application: (1) The flocculation speed is slow and the treatment efficiency is low; (2) The decolorization effect is poor, and the decolorization rate of the wastewater containing aqueous paint mist is low; (3) The paint slag floats completely, and the paint slag will sink after the final wastewater quality is clear. Unable to float for a long time, the water quality of the wastewater cannot be kept clear and transparent for a long time, resulting in the turbidity of the wastewater not meeting the standard; (4) The anti-viscosity agent and flocculant itself contain a pH regulator, or the pH of the wastewater needs to be adjusted externally when using the product, and the operation is complicated and cumbersome (5) The detackification and flocculation effects need to be further improved, the detackification of water-based paint is not complete, and the particles of floating paint slag are small, easy to disperse, and difficult to salvage