Overview of the plant. On the first photo you can clearly see the 3 large pans on the right side of the plant. The water enters from the headworks at the foreground. Barely into the first pan you can see a type of baffle or dike that keeps any floatables or heavy sludge from passing farther into the pan. It is then cleaned out by the workers, but I don't know how often. The second shot shows all 6 pans which is in a 3 pan side by side configuration. Water enters equally into the top two pans and flow through the system.
Regards,
Bob