It should be noted here that, as sewage enters a plant for treatment, it flows through a screen, which removes large floating objects such as rags and sticks that might clog pipes or damage equipment. After the sewage has been screened, it passes into a grit chamber, where cinders, sand, and small stones settle to the bottom. In short, a high-tech wastewater treatment plant cleans sewage and water to be returned to the environment. These plants remove solids and pollutants, break down organic matter and restore the oxygen content of treated water. With EdrawMax Online, you can create a similar-looking sewage treatment diagram for your project.