How is aluminum alloy wastewater decolorized by decoloring agent?

How to effectively treat aluminum alloy wastewater in aluminum industry? Aluminum industry wastewater treatment process is very complex, and has a certain difficulty, so the wastewater problem has been plagued by the industry demand, aluminum alloy wastewater in the production process contains a large number of aluminum ions, zinc, nickel, copper and other metal ions, PH value is also acidic and alkaline, so for aluminum wastewater, we recommend the use of neutralization adjustment + coagulation precipitation method. This method can also greatly reduce the use of decolorizers, thereby reducing costs.

When the wastewater is discharged from the workshop into the comprehensive regulation tank in order to balance the water quality, it is recommended to add alkali for neutralization, and then add aluminum alloy wastewater decolorization agent in the coagulation tank, and then add calcium hydroxide to adjust the PH, and finally add diluted polyacrylamide (PAM), the wastewater color and harmful substances can be treated clean, flocculating and precipitating water to reduce pollution. Make it meet the emission standards.

At present, in the process of flocculation treatment, there are many kinds of flocculants used, which can be summarized as two types. One is an inorganic salt flocculant, and the other is a polymer flocculant. The aluminum alloy wastewater we talk about today is suitable for the use of organic polymer flocculant (aluminum alloy wastewater decolorizing agent), because the experiment found that it has obvious advantages compared with inorganic flocculant, and the flocculant formed by aluminum alloy wastewater decolorizing agent is coarse, easy to precipitate, and the filtration result is obvious, so the treatment efficiency is high and relatively stable. It can effectively treat the substances contained in the wastewater, and is suitable for various types of aluminum anodizing dyes. Not only can be used in combination with the equipment process, but also can be pretreatment alone, does not affect the biochemical system, does not produce secondary pollution, is a kind of efficient decolorization precipitation process products suitable for large-scale industrial applications.