Government Procurement Case of the New Dongfeng Sewage Treatment Vehicle in Qingdao and Analysis of Efficiency Improvement In Q4 2025, a municipal sanitation department in Qingdao publicly tendered for five units of the new Dongfeng sewage treatment vehicles to address local sewage treatment challenges. After rigorous evaluation, Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') successfully delivered the vehicles, leveraging its mature product solutions and strong industry reputation. This article analyzes key performance indicators—including efficiency gains and cost reductions—by comparing pre- and post-deployment data, and provides reference insights for similar procurement projects. Project Background and Requirements Analysis The municipal sanitation department is responsible for treating domestic sewage and industrial wastewater across certain urban districts of Qingdao. Its legacy equipment was outdated and inefficient, resulting in prolonged sewage accumulation in some areas and negatively impacting residents’ daily life. Key requirements included: – Treatment capacity of over 100 m³ per day to meet peak-demand conditions; – Compliance with China VI emission standards to align with Qingdao’s environmental regulations; – Simple operation and low maintenance costs, suitable for frontline operational teams; – Budget control within approximately RMB 3.335 million (per publicly available tender information). Chengli’s proposed solution was based on a Dongfeng chassis, model CLW5180GSSD6 (referencing official announcement parameters), equipped with a high-efficiency sewage treatment system capable of rapid suction, separation, and discharge—fully meeting the above requirements. Pre- and Post-Deployment Performance Comparison The table below presents key performance metrics before and after deployment of the five sewage treatment vehicles (data sourced from client feedback and Chengli’s after-sales statistics): Metric | Pre-Deployment (Legacy Equipment) | Post-Deployment (Chengli Sewage Treatment Vehicles) | Improvement ---|---|---|--- Average Daily Operation Volume (m³) | ~50 | ~120 | +140% Single-Treatment Cycle Time (minutes) | ~45 | ~25 | -44% Required Operators per Vehicle (persons/vehicle) | 3 | 2 | -33% Average Monthly Operating Cost per Vehicle (RMB 10,000) | ~1.8 | ~1.2 | -33% Failure Rate (occurrences/month) | 3–5 | 0–1 | Significantly reduced Efficiency Gains and Staff Optimization Post-deployment, average daily operation volume increased from ~50 m³ to ~120 m³—a 140% improvement. This substantial gain stems primarily from the new vehicle’s advanced separation technology, which cuts single-cycle processing time by nearly half. Consequently, each vehicle can cover a significantly larger service area within the same working hours. Regarding staffing, legacy equipment required three operators per vehicle (one driver + two assistants), whereas Chengli’s highly automated sewage treatment vehicles require only two personnel per unit (one driver/operator + one assistant). Across all five vehicles, this optimization reduces total manpower by five staff members. Based on local procurement practice, the annual salary and social insurance cost per sanitation worker is approximately RMB 80,000—yielding an estimated annual labor-cost saving of RMB 400,000. Client Feedback: “Now one crew can accomplish what previously required two crews—efficiency has clearly improved. Moreover, operation is simple; staff become fully operational after just two days of training.” Reduction in Operating Costs Operating costs decreased from ~RMB 18,000 to ~RMB 12,000 per vehicle per month—a 33% reduction. Primary contributing factors include: – Reduced fuel consumption: The new Dongfeng chassis (referencing C