Suction sewage truck, the principle is to use a vacuum pump to vacuum the tank body into a negative pressure, the use of atmospheric pressure will be pressed into the tank of dirt, is a common sanitation work car. Its limitation is that it can only suck in the dirt, carry it away, dump it, and then make a trip back and forth to repeat this work.
There are two kinds of sewage treatment trucks, one is the side pumping and discharging, the dirt inhalation, and then precipitation, separation, solid dirt discharged, and at the same time the separation of sewage discharged, this kind of car to deal with the sewer is very advantageous, about 100 cubic meters of sewage per hour, do not have to go back and forth to dumping, directly on the separation of the solid dirt pile, sewage discharged back. Saves rounds and improves efficiency.
Another kind of sewage treatment car with purification function, also called suction and purification car, the main advantage of this car is to deal with septic tanks, such as like a large farm, environmental issues have always been difficult. And suction sewage purification car is a good solution to this problem, it can be precipitated manure inhalation for purification and processing, solid manure drying bagging, directly as organic fertilizer use, the liquid through the precipitation, filtration, separation, drug purification, so that it can reach the environmental protection standards that can be discharged into the sewers, in one fell swoop, very practical.