Method for online treating waterborne epoxy industrial paint circulating water in real time

Abstract

The invention discloses a method for online treating waterborne epoxy industrial paint circulating water in real time. According to the method, coagulated substances and flocculates are directly dehydrated and removed after coagulation and flocculation steps by virtue of a method of compounding an inorganic high polymer coagulant and an organic high polymer flocculant, and therefore, production water can be circularly used, so that the water treatment time is shortened, the normal production is not influenced by a circulating water treatment process, the production work hour is guaranteed, the treatment process is rapid and efficient, the price advantage is obvious, and the water treatment economy is high. By collecting circulating water from paint fog and timely utilizing circulating water in a production period of waterborne epoxy industrial paint, most waterborne resin, pigments, fillings and the like in the circulating water can be removed, so that a circulating use purpose is achieved, the online, real-time and dynamic management of coating wastewater of waterborne paint is realized, and the production process of an enterprise can adapt to the change of the industrial paint from an oil property to a water property.

Description

technical field [0001] The invention belongs to the technical field of collecting water for water-based epoxy industrial paint mist, and more specifically relates to a method for online real-time processing of circulating water for water-based epoxy industrial paint. Background technique [0002] Waterborne epoxy paint has been widely used in ships, containers, construction machinery and other fields as the middle and inner layer and bottom industrial paint. In the process of using water-based epoxy industrial paint, spraying is the most important coating method, but the paint rate of spraying is generally about 50%, and the efficiency is only 70%. In the spraying workshop, water curtain or water cyclone is generally used to remove Paint mist, so there will be a large amount of water-based paint wastewater, plus the wastewater generated by equipment and container cleaning, the amount is very large. Calculated based on 300 days of production per year, 15,000-17,000 tons of w...

AI Technical Summary

Problems solved by technology

In order to achieve the above treatment values, methods such as ultrafiltration / distillation, ultrafiltration / reverse osmosis, stripping / evaporation are required, but in actual production and application, the treatment efficiency is extremely low and the process economy is extremely poor

At the same time, the existing water-based paint wastewater treatment technology only focuses on the "water-based" feature, without in-depth research and analysis. Water-based paints are classified and treated according to different characteristics, resulting in poor water-based paint wastewater treatment effects and poor practical application effects.

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