From the Huizhou Case Study: How to Balance Budget and Performance When Procuring Sewage Treatment Vehicles? Recently, a municipal sanitation department in Huizhou, Guangdong Province, procured a batch of Euro VI Dongfeng sewage treatment vehicles with a 3308-mm wheelbase to meet local river channel and pipeline maintenance requirements. According to publicly released tender information, these vehicles are primarily intended for emergency sewage suction and discharge, sludge removal, and temporary on-site treatment. The procurement process emphasized transparent configuration and cost-effectiveness, ultimately selecting Chengli Special Purpose Vehicle Co., Ltd.'s solution. This article uses this case as a starting point—from configuration lists and optional equipment value to pricing logic—to provide objective reference for organizations with similar needs. I. Procurement Background and Core Requirements The department routinely handles pipe blockages in aging urban districts, rainwater accumulation during monsoon seasons, and small-river dredging—operations conducted in complex environments. As such, clear requirements were specified for vehicle maneuverability (3308-mm wheelbase), emission compliance (Euro VI standard), and multifunctionality (suction/discharge, solid-liquid separation, and temporary storage). The budget was capped at approximately RMB 687,000 per unit (based on local procurement norms), with two units required. After multiple rounds of comparative evaluation, Chengli’s solution—featuring a Dongfeng 3308-mm wheelbase chassis integrated with a custom-built sewage treatment upper structure—was selected due to its transparent configuration and comprehensive after-sales support. II. Comparison: Standard vs. Premium Configuration To accommodate varying operational precision requirements, this batch includes both Standard and Premium versions. Below is a comparative table compiled from Chengli’s product database and official technical specifications (e.g., CLW5070GSSD6, derived from the same chassis platform): Configuration Item Standard Version (~RMB 280,000/unit) Premium Version (~RMB 320,000/unit) Chassis Model Dongfeng 3308-mm wheelbase; Euro VI emission; Yuchai 140 HP engine Dongfeng 3308-mm wheelbase; Euro VI emission; Yuchai 160 HP engine Sewage Tank Capacity 4 m³ 6 m³ Suction/Discharge System Standard vacuum pump: suction rate 80 m³/h; maximum discharge depth 8 m High-capacity vacuum pump + high-pressure cleaning pump: suction rate 120 m³/h; maximum discharge depth 12 m Solid-Liquid Separation Device Manual filter-screen type Automatic drum-type solid-liquid separator + hydraulic tipping mechanism Control System Manual valve bank PLC-based intelligent control + remote operation capability Auxiliary Functions Night illumination lights, safety warning lights 360° panoramic video monitoring system + water-level alarm system Tire Specification 7.00R16 steel-belted radial tires 7.50R16 steel-belted radial tires (higher load capacity) As shown above, the Standard version fulfills basic operational needs and suits organizations operating under tight budgets or with low-frequency usage. In contrast, the Premium version delivers superior efficiency, automation level, and safety—ideal for high-frequency, high-demand operational scenarios. III. Optional Equipment Value Analysis: Which Add-ons Are Worth the Investment? Based on feedback from Chengli’s after-sales team and users across multiple regions, the following optional equipment demonstrates outstanding cost-effectiveness in real-world applications: High-Capacity Vacuum Pump + High-Pressure Cleaning Pump Combination: Approx. RMB 15,000 additional cost. Significantly improves suction and discharge speed while enabling integrated 'suction–cleaning–discharge' functionality—reducing equipment mobilization costs. This configuration has been repeatedly validated for high efficiency in Guangdong industrial park cases involving five water-sprinkling and fog-ca