Many people are curious about where the sewage from flushing the toilet, taking a shower, and washing dishes enters the sewer every day goes? Some people may think that it has been discharged into the river through a sewer; Some people believe that it has been poured underground, but in fact, urban domestic sewage is treated by centrifugal dewatering machines and discharged up to standard.
Our daily domestic sewage is collected into the city's sewage treatment plant through underground drainage pipes that are dense like spider webs. After being treated by centrifugal dewatering machines, it is discharged into the rivers that flow through the city, while the other part, such as rainwater, is directly discharged.
Urban domestic sewage is discharged into a sewage treatment plant through pipelines. After the water treatment plant meets the standards, it is discharged into rivers and water bodies. Because the treated water from the sewage treatment plant meets the standard, it will not cause damage to the environment.
Usually, the sewage generated in a residential area can only be collected through a 300CM diameter sewage pipe, so you don't think there is a large pipeline. To prevent blockage, the drainage pipe for each household should be no less than 50CM diameter. Now every building has a joint septic tank, which can reduce the pollution of sewage first (the principle of septic tank is that microorganisms eat pollutants). Effluent from septic tank is discharged to: 1. In cities without sewage collection and treatment system, sewage pipes are discharged to the nearest water body through relatively convenient and short distance routes. 2. In cities with sewage plants, the main sewage collection pipeline is usually built along rivers and streets. There is an inspection well every certain distance (usually between 50-100m), and the sewage from each branch pipe is collected into the inspection well. Due to the gravity discharge of sewage (i.e. natural flow, different from pressurized water supply), the pipeline becomes deeper and deeper. At a certain depth, a sewage lifting pump station is built, and the main pipeline sends the sewage to the urban sewage treatment plant.
