Sewer cleaning trucks are primarily used for cleaning urban sewage systems, removing pipe sediment, clearing clogged culverts, and can also be employed for cleaning industrial effluent pipes and walls. They can also serve as water sprinklers, water transporters, and highway冲洗 vehicles. In emergencies, they can be used for firefighting. Sewer cleaning trucks operate on the same principle as sludge suction trucks but have different applications. The key difference lies in the fact that the tank of a sewer cleaning truck is a circular design, which is more tightly structured to withstand higher pressure and provide greater suction power, making it suitable for collecting, cleaning, and transporting wastewater and sludge.