When it comes to the routine maintenance of urban underground pipe network, whether it is to dredge the persistent sewer blockage or to cope with the sudden waterlogging in the rainy season, the combination sewage vacuum suction truck is definitely the “absolute main force” in the sanitation fleet.
But to be honest, configuring vehicles for different cities is never “bigger is better” or “one size fits all.”. The most troublesome problem for many purchasers when making budget is how to determine the capacity of clean water tank and sewage tank? A small selection is inefficient, a large selection is impossible to drive in narrow streets, and valuable car purchase budget and fuel money are wasted.
Today, let’s talk about how to customize the most suitable model for your city from the actual working condition.Choose the capacity according to the working condition: do not buy the expensive one, just buy the right oneTo maximize fleet efficiency and save unnecessary money, the most direct way is to see what you do most of the time.

Old town, narrow street and crowded commercial area
Recommended capacity: 3 to 6 cubic meters (small and lightweight)
If your jurisdiction has many old downtown areas with long history, or crowded commercial streets parked on both sides of the road, don’t blindly pursue big cars. Such areas not only have narrow roads, but also have strict height and weight limits. Large equipment cannot get in at all, or there is no space for turning around.
At this point, the combination sewage vacuum suction truck is especially practical. The chassis is short and the turning is flexible. When the oil separation tank of the catering street is cleaned or the old community is suddenly blocked, it can achieve “move forward and backward freely and leave after work”, so as to minimize the traffic congestion.
Routine inspection of municipal pipe network, new residential areas and suburbs
Recommended capacity: 8 to 12 cubic meters (medium main force)
For the sanitation departments of most cities, the pipe network inspection of new residential areas, urban subcenter and conventional roads is a real scene every day. The working space is relatively spacious, and the single sludge volume is also moderate.
This is the largest “gold displacement” in the industry. The mid-sized Combustion Cleaner Truck just achieves the perfect balance between endurance and mobility. It is loaded with high pressure water enough for daily washing, and the sewage tank can support several hours of continuous operation, so the workers do not need to frequently run to the suburbs to dump waste materials.
Tips: When configuring this kind of medium-sized vehicle, we strongly recommend adding the front surface flushing system (front sprinkler). In this way, after dredging the sewer, the dirty road surface can be washed clean, and the vehicle can be used for multiple purposes, and the cost performance can be directly pulled.

Main sewage network, heavy industrial area and flood control and drainage in rainy season
Recommended capacity: 14 to 20 cubic meters and above (heavy beast)
When encountering deep main road network dredging, heavy mud with extremely high density in heavy industrial areas, or emergency flood control and drainage in heavy rainy seasons, small equipment really “cannot eat”. You have to face a lot of stones, heavy silt and a lot of water.
In the face of this tough battle, you have to wear the heavy combination sewage vacuum suction truck. Ultra-high capacity clean water tank and sewage tank, matched with the top vacuum pump system, can enable the construction team to continuously fight at the site. Especially when dealing with the sewage discharge of large infrastructure projects, large capacity means that it can save a lot of time to dump back and forth, which is definitely the ultimate tool to gnaw the bones.
Conclusion: Don’t let the old equipment drag the back leg of efficiency
The capacity selection is not only to replace the procurement budget of real gold and silver in the municipal provinces, but also to facilitate the future use of workers and keep the urban pipe network unblocked.
If you are planning for a fleet upgrade, but you are still unsure how to mix the tank with the slop tank, please contact our business team at any time. Whether the chassis with high cost performance is required or the customized superstructure for specific market is required, we can provide a most reliable selection and quotation scheme for combination sewage vacuum suction truck according to the actual local road conditions. Send a message or call now and let’s put your budget to the cutting edge!

الأسئلة الشائعة
Q1: Which chassis brands are supported? Can RHD countries use it?
A: Perfect match with mainstream chassis of China National Heavy Duty Truck (HOWO/Sitrak), Shacman, Dongfeng, Foton, etc. Whether it is left rudder (LHD) or right rudder (RHD), we can provide models meeting local admission and emission standards to ensure smooth customs clearance and registration.
Q2: Can tank volume and water pump/vacuum pump be customized?
A: Yes. The volume ratio of clean water tank and sewage tank can be customized according to your working condition. The core pump body provides dual options: the domestic first-line high-power pump can be selected for high cost performance; Choice of pumps imported from Italy (Jurassic/Moro) for high intensity continuous operation.
Q3: How to protect the tank against corrosion? Can the tank be easily damaged if sludge is sucked frequently?
A: The tank body is integrally rolled with high-strength carbon steel. For sewage corrosion, the inner wall of the tank body shall be subject to strict sand blasting for rust removal and coated with multilayer epoxy resin heavy anticorrosive paint. If the budget is sufficient or industrial wastewater needs to be treated, it can also be directly upgraded to 304 stainless steel tank

