The necessity of pumping sewage:

　　The Submersible Sewage Pump needs to be used to pump sewage in the following situations:

　　(1) When certain areas of towns or cities are in low-lying areas, it may not be possible to drain the low-lying areas by gravity to drain into higher secondary or main pipes, unless the rest of the entire sewage system is at a higher level Placed at the corresponding lower level. In this case, it will be more economical to collect the sewage from the low-lying area into the collection well by gravity, and then put the Submersible Sewage Pump of China Submersible Pump Factory into the gravity main sewage canal in the high-water area.

　　(2) When the land is flat, laying sewers at the calculated slope to achieve self-cleaning speed will involve expensive excavation. This can be avoided by installing pumping devices along long sewer intervals to lift the sewage from one part to the next, which can be located at a higher water level and under the action of gravity. The process of lifting sewage is called boosting, and the Submersible Sewage Pump used is called a booster.

　　(3) When the water level of the sewage canal is lower than the entrance of the treatment plant or the water body or any other discharge point, the sewage must be lifted by a pump for treatment or discharged into the water body or discharged into the water body. Any other discharge points.

　　(4) When the sewer is required to pass through high ridges, tunnels need to be excavated for this purpose. However, instead of driving the tunnel, it may be more economical to pump sewage into a sewer that crosses the slope of the ridge at a reasonable depth.

　　This can happen when a town or city is divided into two parts by a ridgeline. The two parts of sewage are collected separately at the lowest point under the action of gravity, and then a part of the sewage is discharged to the other part by pumping water through the ridge.

　　(5) When the level of sewage discharged from the basement or basement of a building is required to be lower than the inverted height of the sewer to be discharged into the sewage, the sewage needs to be pumped in.

　　However, it should be pointed out that the installation of water pumps in the sewage treatment system will result in additional expenditures because it will involve capital investment, operating and maintenance costs, and additional supervision costs. Therefore, the necessity of pumping sewage should be carefully checked before the final recommendation.