Table of Contents
1. Product Overview
2. Working Principle
3. Daily Application Scenarios
4. Comparison with Traditional Sanitation Vehicles
5. Buying Guide
6. Operation and Maintenance Tips
7. Frequently Asked Questions
Conclusion
1. Product Overview
Core Product Keywords: Dongfeng Dolica D9
4×2 Sewage Suction Vacuum Truck, 11CBM Municipal Sanitation Vehicle, Vacuum Sewage Truck, Medium-duty Sludge Suction Equipment, Urban Sewage Disposal Truck.
High-pressure sewer flushing vehicle (commonly known as Vacuum Sewage Truck) is a special sanitation vehicle equipped with vacuum pump, used to suck, transport and discharge sewage, sludge, mud and wastewater.
A High-pressure sewer flushing vehicle is a dedicated municipal sanitation vehicle designed with a high-performance vacuum pumping system. It creates negative pressure inside the sealed tank to suction sewage, sludge, slurry, sewage waste and other liquid-solid mixtures from sewers, septic tanks, drainage pipes and sewage pits. The collected waste is stored in the tank and transported to designated treatment areas for unloading. This vehicle is widely applied in urban sanitation, environmental protection, municipal engineering and rural sewage treatment.
Body Structure Description
Its storage tank is constructed with thickened high-strength carbon steel integrated stamping and welding structure, adopting integral sealing and pressure-resistant design to bear negative pressure suction and hydraulic discharging.
Core Advantages
1. High working efficiency：Adopts vacuum negative pressure suction mode, with fast suction and discharge speed, which can quickly clean sewage, sludge and blockages.
2. Wide application range：Suitable for sewer, septic tank, sewage pit and other scenarios, capable of handling various liquid and solid mixed wastes.
3. Good sealing & environmental protection：The fully sealed tank avoids leakage and odor overflow, reducing secondary pollution.
4. Flexible & labor-saving：Integrates suction, storage and transportation, reducing manual operation and lowering labor costs.
5. Stable performance：Equipped with mature vacuum and hydraulic systems, with stable operation and long service life.
2. Working Principle
The complete working system of Dongfeng Dolica D9 4×2 11CBM sewage suction truck consists of three core modules: mature Dongfeng Dolica D9 4×2 chassis power system, industrial-grade vacuum pumping assembly and 11CBM pressure-resistant fully sealed storage tank.
After engine startup, the power take-off extracts power from Dolica D9 original chassis to drive the vacuum pump to run continuously. The vacuum pump discharges air inside the sealed tank to form stable negative pressure. Relying on atmospheric pressure difference, all kinds of sewage, sludge, slurry and liquid-solid mixed waste are automatically sucked into the 11CBM storage tank from sewers, septic tanks, drainage pipes and sewage pits.
Benefiting from integral pressure-resistant and sealing structure, the thickened carbon steel tank can bear long-term negative pressure operation and prevent sewage leakage and odor overflow. After waste collection is completed, operators control the hydraulic system to finish automatic unloading. The whole process realizes mechanized integration of suction, storage, transportation and discharging. Equipped with optimized Dolica D9 cab and chassis, the truck owns comfortable driving experience, flexible steering and stable power output, perfectly matching medium-load daily sanitation tasks.
3. Daily Application Scenarios
Urban Municipal Sanitation: City sewer dredging, drainage pipeline blockage removal, public septic tank and sewage pit regular cleaning
Environmental Protection Projects: Polluted domestic sewage disposal, urban black-odor river remediation, water body sludge cleaning
Municipal Engineering Operation: Construction site wastewater and mud disposal, foundation pit sewage suction
Rural Sewage Treatment: Village domestic sewage collection, rural ditch desilting, decentralized sewage disposal
Public Facility Maintenance: Park, scenic spot and residential community sewage pipeline daily maintenance
4. Comparison with Traditional Sanitation Vehicles
Vs Manual Sewage Cleaning: Traditional manual dredging relies on handwork and simple pumping tools, featuring low suction efficiency, huge labor consumption and serious odor leakage, causing urban secondary pollution. This Dongfeng Dolica D9 sewage suction truck adopts full-mechanical operation, saving labor cost and optimizing working environment.
Vs Ordinary Water Transport Trucks: Common
Water Tank Trucks only support simple liquid transportation, without negative pressure suction function, unable to dispose viscous sludge and solid-liquid mixed waste. This professional Dolica D9 sewage suction truck equips dedicated industrial vacuum system, integrating suction and transportation functions to meet comprehensive sanitation demands.
Vs Small-capacity Sanitation Trucks: Mini sewage suction trucks with tank volume below 8CBM require frequent round trips, wasting fuel cost and lowering working efficiency. Featured with standard 11CBM large-capacity tank, Dongfeng Dolica D9 improves single transportation volume; compared with heavy-duty sanitation vehicles, it has lower fuel consumption and better road flexibility.
High-pressure sewer flushing vehicle |
General | Chassis Brand | Dongfeng Tianjin |
| Overall Dimension(L×W×H) | Approx 7500×2500×3200mm |
| GVW / Kerb Weight | 16000kg / approx 7800kg |
| Drive Orientation | Left-hand Drive (LHD) |
Cab | Cab Type | Sleeper Cab (Row-and-a-half) |
| Cab Capacity | 2 seats (1 driver + 1 passenger) with rear sleeper berth |
| Air Conditioner | Standard equipped |
| Power Windows | Standard equipped |
| Central Lock | Standard equipped |
Engine | Fuel Type | Diesel |
| Engine Brand | Dongfeng Cummins / Weichai (alternative optional) |
| Rated Power | 160-190HP/118-140kW |
| Displacement | 3.8-4.1L |
| Emission Standard | Euro2/Euro3/Euro5/Euro6 optional |
Chassis Parameter | Drive Type | 4×2 |
| Transmission | 6/8-speed manual gearbox with PTO interface |
| Wheelbase/No.of axle | 4700mm / 2 axles (3800/5250mm optional) |
| Tyre Specification | 8.25R20 heavy-duty radial tires |
| Tyre Number | 6pcs + 1 spare tyre |
| Max Speed | 90km/h |
| Paint | Standard: white cab + customized superstructure color |
Superstructure | Tank Body Capacity | 10000-12000Liters (customizable) |
| Tank Body Material | 5-6mm thick Q235B high-strength carbon steel, fully welded construction; 304 stainless steel optional |
| Tank Body Structure | Horizontal cylindrical tank, with anti-wave baffle inside, reinforced dished tank head |
| Sewage Suction Pump | Domestic famous brand vacuum suction pump (imported brand optional) |
| Pump Performance | Max vacuum degree ≥-0.09MPa, max suction depth ≥6m, stable suction flow, low noise |
| Hydraulic System | Domestic brand hydraulic pump & valves, working pressure 16-20MPa |
| Control Mode | In-cab manual lever control with safety interlocks; optional wireless remote control |
| Discharge Function | Hydraulic lifting tank body (max lifting angle ≥45°), hydraulic opening rear tank cover with high-density silicone sealing ring |
| Standard Accessories | Anti-overflow valve, sight glass window, 8m anti-wear suction hose, stainless steel filter screen, built-in flushing pipe, bottom drainage valve, safety railing |
| Anti-corrosion | Epoxy primer + weather-resistant finish paint, anti-rust treatment for all metal parts |
5. Buying Guide
For overseas municipal sanitation departments, engineering contractors and sanitation fleet purchasers, please check core configurations before procurement:
Genuine Dongfeng Dolica D9 4×2 Chassis: Optimized medium-duty sanitation dedicated chassis, mature power assembly, comfortable driving cab, stable power output, with global spare parts supply channel, reducing overseas after-sales risks.
Standard 11CBM Integrated Storage Tank: Thickened high-strength carbon steel tank with integrated stamping and welding technology, integral pressure-resistant and sealing design, durable structure, adapting to long-time vacuum working conditions.
Mature Vacuum & Hydraulic System: Matched reliable vacuum pump and supporting hydraulic components, stable operation, low failure rate, easy overhaul and long service life.
Complete Export Certification: Standard factory refitting, providing full set of customs clearance documents, supporting overseas government bidding and bulk cross-border delivery.
6. Operation and Maintenance Tips
Standardized operation and routine maintenance can effectively cut down vehicle failure rate and prolong service life:
6.1 Daily Operation Specifications
Inspect tank sealing status, vacuum pipeline and hydraulic connection parts before vehicle ignition
Test vacuum pump operating condition to ensure stable negative pressure output before formal work
Prohibit sucking oversized hard sundries and gravel to prevent pipeline blockage and vacuum component abrasion
Stop the vehicle completely before hydraulic unloading operation to avoid hydraulic system malfunction
Clean tank interior and residual pipelines after daily work to reduce corrosive dirt deposition
6.2 Regular Maintenance Advice
Clean vacuum pump and internal pipelines monthly to maintain stable suction efficiency
Check tank welding seams and sealing strips quarterly, repair tiny gaps to prevent air and liquid leakage
Lubricate hydraulic parts regularly to guarantee flexible discharging action
Replace vacuum pump dedicated oil periodically to stabilize overall system performance
Follow official Dongfeng Dolica D9 chassis maintenance manual to guarantee power stability and driving durability
7. Frequently Asked Questions
Q1: Official export name
A1: Standard export names: Dongfeng Dolica D9 4×2 11CBM Sewage Suction Vacuum Truck, Dolica D9 Vacuum Sewage Truck, 11CBM Medium-duty Sewage Disposal Vehicle.
Q2: What working scenarios fits this light-duty truck?
A2: It adapts to urban daily sanitation, municipal pipeline maintenance, residential property cleaning, rural sewage treatment and environmental protection renovation projects.
Q3: What is the advantage of 4×2 light-duty layout?
A3: The 4×2 lightweight drive layout brings flexible steering and convenient parking, adaptable to urban narrow roads and suburban rugged roads; matched with 11CBM moderate tank capacity, it balances working efficiency and fuel economy, achieving outstanding cost performance.
Q4: Can the sealed tank avoid secondary pollution?
A4: Yes. The thickened carbon steel tank adopts integrated stamping welding and full-sealing design, which blocks sewage leakage and odor overflow thoroughly, fully compliant with global environmental protection requirements.
Q5: Is this truck suitable for bulk overseas procurement?
A5: Definitely. Supported by reputable Dongfeng Dolica D9 chassis, mature vacuum hydraulic system and standardized 11CBM tank body, the vehicle features low breakdown rate and affordable procurement cost. It is the priority option for municipal sanitation bidding and bulk overseas sanitation procurement.
Conclusion
Dongfeng Dolica D9 4×2 11CBM Sewage Suction Vacuum Truck is a cost-effective, medium-capacity export sanitation vehicle customized for global municipal sewage disposal demands. Equipped with original Dongfeng Dolica D9 reliable chassis and industrial vacuum system, it integrates sewage suction, sealed transportation and hydraulic automatic discharging functions.
Adopting thickened carbon steel integrated stamping welded 11CBM storage tank, cooperating with stable hydraulic system and five core advantages, this vehicle solves low efficiency, poor tightness and inconvenient maintenance pain points of traditional sanitation vehicles. With flexible driving, eco-friendly performance and mature manufacturing technology, Dolica D9 series sanitation trucks gain steady overseas market reputation, becoming reliable sanitation equipment for global municipal departments, property enterprises and environmental engineering contractors.
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