The influent sewage of the grid pool is purple, and there are a lot of scum after entering the air flotation area, and the foam in the aeration pool is very large and many. The color is still red. I'm

The influent sewage of the grid pool is purple, and there are a lot of scum after entering the air flotation area, and the foam in the aeration pool is very large and many. The color is still red. I'm sorry, why, The reason for the red color is that some water contains red dye, which is attached to bubbles after aeration, just like the principle of air flotation pool. Part of it is related to microorganisms, and there is a red aerobic microorganism. The specific situation can be observed under a microscope. As for too much foam, on the one hand, your influent contains too many surfactants (such as various detergents), on the other hand, the aeration tank is overloaded.