Generally, the water collecting the paint overspray is recycled and in order to ensure that the process continues to work efficiently, the paint must be collected and removed from the booth. There is therefore a need to detackify the oversprayed paint cheap oil paintings so that it can be removed easily, to enable filtration and recirculation of water through the system. Preferably, in addition, coagulation of the over-sprayed paint is promoted so that the paint solids will either float so that they can be removed from the surface of the aqueous liquid in the spray-booth, or the paint solids will sink so that they can be removed by sedimentation.
The detackifying process (also known as oil paintings paint denaturing or paint killing) takes place in the water phase, by means of chemicals added to the water itself. In addition,detackification is necessary because it prevents paint fouling the internal surfaces of the booth and of pipes, which may cause blockages.
Collection of paint on the internal surfaces is undesirable because paint deposits formed on the internal walls of the booth are subject to the growth of anaerobic bacteria which generate corrosive and foul-smelling substances due to anaerobic decomposition of organic substances.
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