Sewer treatment plant

At the sewer treatment plant we learned about the sewer system. we learned that there is a big filter that takes out all of the solid matter and large inorganic objects. the water pumps through big pipes and goes into large tanks where microorganisms eat away the waste and organic matter. after that the waste is treated and pumped back into the river as clean water.
recylcling is good for the environment i have always recycled and i will continue to because it is good for the environment.