Polyaluminium chloride has excellent water treatment effect, but polyaluminum chloride in practical use, because of many factors, there will be some bad phenomena. For example, when polyaluminum chloride is added to the biochemical end, yellow foam will float on the water surface. The bubble often takes 3 to 4 days to eliminate. What is the reason for this phenomenon?

When polyaluminium chloride is added to the wastewater from the biochemical tank, it will react with some inorganic salts in the waste water to produce aeration and float to the surface of the water. This kind of foam is not easy to break, and it can last for two or three days under normal conditions. If polymerized aluminum chloride is not added correctly, it may cause excessive content of polyaluminium chloride in some areas, produce excessive aluminum hydroxide colloid, adsorb part of activated sludge in aeration, and form yellow foam. In addition, the addition of PAC will affect the environment of biochemical system, resulting in the release of some colloidal substances of polysaccharides in the metabolism of microorganisms, which is also the reason for the formation of bubbles. Therefore, Gongyi Filter Industry Co.,Ltd reminds you that polyaluminum chloride needs to be used in the right way.