Iraq The Function and Use of Defoaming Agents for Electroplating Wastewater Treatment(3)

affect

UV

additive

and

defoamer

      Iraq Defoaming agents for electroplating wastewater treatment have low surface tension and are insoluble in foaming media. Adding them to electroplating wastewater will not affect chemical substances such as biological bacteria in the water, and will not change the water quality and its basic system. In addition, high temperature resistance, acid and alkali resistance are also important characteristics. Electroplating wastewater contains alkali and other harsh environmental factors. Defoaming agents for electroplating wastewater treatment can quickly adapt to achieve rapid defoaming and long-term foam inhibition. Excellent water solubility can quickly dissolve with wastewater systems, achieving results.

dispersant

wetting

Leveling principle
The compatibility of acrylic leveling agents is an important indicator of their ability to control the surface state of the coating film. The compatibility is too good to dissolve in the coating film, which will not form a new interface on the surface of the coating film and provide no leveling effect; Due to poor compatibility, it is impossible to uniformly distribute on the surface of the coating film, which can gather together and easily cause shrinkage defects. It can reduce the gloss of the coating film and produce adverse side effects such as fog and shadow. Only with ideal controlled compatibility can a new interfacial layer be formed on the surface of the coating film, playing a leveling role

silver

    Iraq Chemical foam in electroplating wastewater treatment is due to the existence of many surfactants such as detergent and colloidal organic matter in the wastewater, which have strong foaming ability. Therefore, under the conditions of water flow speed, fall, aeration, blowing off, etc., a large number of small and light white brown foam will appear on the surface of the wastewater, which is unstable. There are still some differences between biological foam and chemical foam in appearance, usually showing soil brown or grayish brown. There are many reasons for this kind of foam, such as the soil brown foam caused by the low dissolved gas in the biochemical tank. Grey brown foam produced by low MLSS. Foam caused by microbial factors such as microbial abnormalities. Filamentous bacteria grow abnormally, mix and accumulate with foaming and floc particles to form foam that is difficult to eliminate, etc. The defoamer for electroplating wastewater treatment uses modified silicon polyether and modified oxane as the main raw materials to eliminate foam. It can achieve good results for chemical foam and biological foam that may appear in the electroplating wastewater system.