The tank of the fecal suction truck is oval, usually made of carbon steel or stainless steel. It is mainly used to pump manure, sewage, sludge and liquids mixed with small suspended debris. The truck has two modes: self-flow discharge and pressurized discharge. The tank of the fecal suction truck is fixed on the chassis of the car.

The tank of sewage suction truck is a round tank, and the tank body is also made of carbon steel or stainless steel. It is mainly used for sewers, rainwater wells, inspection wells, septic tanks and various large objects such as mud, silt, gravel, bricks and other materials in the ditch. The sewage suction truck has two modes: self-flow discharge and pressurized discharge. The rear part of the suction truck has a hemispherical cover, which can be opened by the hydraulic system, and can be directly discharged from the rear of the tank.

Due to the structure and shape of the tank, the vacuum and suction of the fecal suction truck are not as large as the sewage suction truck. The suction stroke of the fecal suction truck is ≥7m, and the suction stroke of the sewage suction truck is ≥10m. At the same time, the medium they absorb is different. The fecal suction truck can only extract the liquid with the suspended matter, and the sewage suction truck can basically extract the debris smaller than the diameter. Because the tank body is fixed on the car, only the pressure difference of the vacuum pump can be used to discharge the sewage or the pipe can be self-discharged; and the rear part of the tank of the suction truck can be opened, and the liquid lifting function is used, and the tank body is inclined and straight-lined. better. The sewage suction truck can complete all the work of the fecal suction truck, but some of the fecal suction trucks cannot be completed. In this way, everyone should have seen that the sewage suction truck has higher performance than the fecal suction truck, but its cost is much higher than that of the suction truck. In addition, the suction truck can be installed with sprinkler function according to customer requirements. The water and manure tanks can be divided into separate compartments, which can suck the feces and sprinkle water, and use one vehicle for both purposes. The sewage suction truck can generally be installed with a cleaning function, making it a high-pressure cleaning and suction-utilizing vehicle, commonly known as the “combined dredging vehicle”.