The German method of unblocking sewers is actually not very different from the methods in other countries. They all use physical force or chemical substances to unblock sewers. However, Germany has very high technology and demand for unblocking sewers because Germany is a highly developed industrial country with large discharges of industrial wastewater and household sewage, so the demand for maintenance and cleaning of sewers is also higher.
The following is a brief introduction to the commonly used sewer dredging methods in Germany:
1. Mechanical dredging method: This is one of the most commonly used dredging methods in Germany, using specialized mechanical equipment, such as pipe bends. Head machine, floor drain cleaning machine, high-pressure water gun, etc., to clean the sewer. This method is effective and cleans thoroughly, but the equipment maintenance cost is high and requires professional and technical personnel to operate.
2. Chemical dredging method: Dredging agents are also widely used in Germany. This method is generally used for sewers with relatively light blockage. The principle is to pour chemicals into the sewer and clean the dirt in the pipe through dissolution and combustion. This method is relatively simple and convenient, but it is not effective for severely clogged sewers.
3. Vacuum cleaning method: Most German cities have set up special cleaning vehicles to extract sewage and dirt from the sewers through vacuum force and clean them. This method cleans well without the risk of secondary pollution, but the sealing of the cleaning vehicle is not good enough, the cleaning process is cumbersome, and the cost is high.
In general, Germany has a lot of technology and experience in unblocking and cleaning sewers, but it is also facing increasing problems of pollution and maintenance costs. Therefore, society needs more investment and support to strengthen sewer construction and maintenance to ensure the health of cities and the environment.