Huanggang Dongfeng D6 Sewage Treatment Vehicle (Blue License Plate) Government Procurement Case and Bid-Winning Solution Analysis In 2025, a municipal sanitation department in Huanggang City issued a public tender for blue license plate sewage treatment vehicles, aiming to enhance urban sewage collection and treatment efficiency. The procurement involved three units, with a budget capped at approximately RMB 399,000 (per publicly available tender information). Chengli Special Purpose Vehicle Co., Ltd. successfully delivered the vehicles. This article provides a comprehensive reference solution for procuring entities, covering parameter comparisons, configuration differences, applicable scenarios, and selection recommendations. I. Project Background and Requirements Analysis The client is located in Huanggang City and is primarily responsible for urban sewage pipeline maintenance and emergency response. Its existing equipment is outdated and slow to respond; therefore, it urgently requires lightweight, maneuverable sewage treatment vehicles compliant with Class C driver’s license requirements (blue license plate). Key project requirements included: gross vehicle weight not exceeding 4.5 tons; China VI emission standard compliance; integrated functions of suction, discharge, and filtration; local production and delivery in Suizhou; and a maximum delivery cycle of 15 days. After multiple rounds of evaluation, Chengli Special Purpose Vehicle Co., Ltd. won the bid with its Dongfeng D6-based CLW5040TWCD6 sewage treatment vehicle. This model features the Dongfeng D6 chassis (wheelbase: 3,308 mm), powered by a Quanchai Q23-136E60 diesel engine delivering a maximum output of 100 kW, fully compliant with China VI emissions. Overall dimensions: 5,995 × 1,980 × 2,800 mm; tank capacity approx. 2.5 m³ (per MIIT announcement); unit price approx. RMB 98,000 (per publicly available tender information). II. Horizontal Comparison of Five Mainstream Models To assist procuring entities in conducting a comprehensive evaluation, below is a comparative table of key technical parameters for five comparable blue license plate sewage treatment vehicles. All data are sourced from Chengli Special Purpose Vehicle’s product database and official MIIT announcements (e.g., model CLW5040TWCD6). Parameter | Model A: CLW5040TWCD6 | Model B: CLW5040TWCD6 (Low-spec) | Model C: CLW5040TWCD6 (High-spec) | Model D: CLW5070GSSD6 | Model E: CLW5180GSSD6 ---|---|---|---|---|--- Chassis Model | Dongfeng D6 | Dongfeng D6 | Dongfeng D6 | Dongfeng D6 | Dongfeng D6 Engine | Quanchai Q23-136E60 | Quanchai Q23-136E60 | Quanchai Q23-136E60 | Quanchai Q23-136E60 | Quanchai Q23-136E60 Gross Vehicle Weight (kg) | 4,495 | 4,495 | 4,495 | 4,495 | 4,495 Tank Capacity (m³) | 2.5 | 2.0 | 3.0 | 2.5 | 2.5 Wheelbase (mm) | 3,308 | 3,308 | 3,308 | 3,308 | 3,308 Maximum Power (kW) | 100 | 100 | 100 | 100 | 100 Emission Standard | China VI | China VI | China VI | China VI | China VI Cab Configuration | Single-row | Single-row | Single-row | Single-row | Single-row Reference Unit Price (RMB 10,000) | ~9.8 | ~8.5 | ~11.2 | ~9.8 | ~9.8 Main Configuration | Standard: Suction pump, discharge valve