Case Study and Bid-winning Solution Analysis: EHY5045TWCE6 Sewage Treatment Vehicle Procurement by Fuyang Municipal Government. In the municipal sanitation sector, the selection of sewage treatment vehicles directly impacts operational efficiency and cost control. Recently, a district Urban Management Bureau in Fuyang, Anhui Province, faced the need to replace aging sewage treatment equipment. After multiple rounds of comparison and field trials, it selected the EHY5045TWCE6 sewage treatment vehicle manufactured by Chengli Special Purpose Vehicle Co., Ltd., and completed procurement via public tender. This article comprehensively reconstructs the real-world case—from pilot trial and performance evaluation to market benchmarking and bulk procurement decision-making—to serve as a reference for similar government procurements. I. Pilot Trial First: Building Trust Starting with One Unit In March 2025, a municipal sanitation department in Fuyang urgently needed to procure a batch of new sewage treatment vehicles due to aging equipment at its local wastewater treatment stations, resulting in insufficient treatment capacity. Considering a budget cap of approximately RMB 402,000 and requirements for frequent site relocation and operation under complex working conditions, the department decided to conduct a one-unit pilot trial of Chengli’s EHY5045TWCE6 sewage treatment vehicle to verify actual performance. Chengli Sales Manager Zhang Yue (Tel: ) swiftly coordinated resources and delivered the vehicle within 10 days of receiving the request. Built on the Dongfeng 3308 wheelbase chassis, this vehicle measures 5995 × 2000 × 2850 mm, has a gross vehicle weight of 4495 kg, a rated payload of 1500 kg, and is equipped with a full-power PTO and vacuum pump system—delivering a theoretical daily treatment capacity of 80–120 m³. The one-month trial covered diverse scenarios across Fuyang’s urban area, including combined sewer overflows, industrial wastewater from chemical parks, and domestic sewage. A dedicated staff member recorded daily operational data—including treatment efficiency, energy consumption, and fault frequency. II. Trial Performance Summary: Data-Driven Evaluation Below are key performance metrics recorded during the trial period (referencing CLW5040TWCE6 model certification parameters and actual operational data): Test Item | EHY5045TWCE6 Performance | Industry Average Benchmark ---|---|--- Average Daily Treatment Volume (m³) | 95 | 70–80 Average Operation Time per Task (hrs) | 6.5 | 7–8 Energy Consumption (L/hr diesel) | 4.2 | 5–6 Number of Failures | 0 | 1–2/month Effluent Quality Compliance Rate (SS Removal) | 98% | 90–95% Notably, during chemical park wastewater treatment, the vehicle achieved >98% suspended solids (SS) removal through integrated vacuum pump and filtration systems—exceeding expectations. Operators reported: “Simple to operate, highly mobile between sites, and requires virtually no additional maintenance.” Upon completion of the trial, the department confirmed that the EHY5045TWCE6 fully met daily operational requirements and demonstrated lower energy consumption than comparable models. III. Market Comparison: Value-for-Money and Reliability During the trial period, the department also evaluated alternative sewage treatment vehicles from other brands—including a local upfitter and a well-known chassis manufacturer. Key comparative insights are summarized below: Local Upfitter Product: Quoted at ~RMB 322,000; however, uses an outdated chassis (3308 wheelbase), lacks a full-power PTO, and delivers only 60–80 m³/day treatment capacity. After-sales response is slow, and spare parts availability is limited.