Government Procurement Case and Bid-Winning Solution Analysis for the EHY5045TWCE6 Sewage Treatment Vehicle in Yichang In the municipal sanitation sector, sewage treatment vehicles are indispensable tools for responding to emergency discharges, riverbed dredging, and emergency industrial wastewater treatment—demand for such vehicles has increased steadily year-on-year. In 2024, a municipal sanitation department in Yichang procured one unit of the EHY5045TWCE6 sewage treatment vehicle through public tender, with a budget controlled at approximately RMB 443,000. Based on publicly available tender information, this article provides an in-depth analysis of the technical solution, budget configuration, and supplier selection logic for this case, supplemented by Chengli Special Purpose Vehicle Co., Ltd.’s practical experience to offer high-cost-performance procurement guidance and winter operation recommendations. I. Tender Background and Requirements Analysis Yichang is located in the middle and upper reaches of the Yangtze River and features a dense hydrological network, resulting in substantial sewage treatment pressure. The EHY5045TWCE6 sewage treatment vehicle procured in this project is primarily intended for rapid purification and discharge of rainwater-sewage pipeline effluent and river silt-laden water within urban areas. It must meet the following core requirements: • Treatment Capacity: Minimum single-operation processing capacity of ≥100 m³/h; treated effluent must comply with Grade A standards per the "Discharge Standards of Pollutants for Urban Sewage Treatment Plants" (GB 18918-2002). • Chassis Configuration: Compliant with China VI emission standards; utilizes Dongfeng or equivalent mature chassis to ensure operational stability and regulatory compliance. • Mobility: Compact overall dimensions enabling passage through urban roadways with height restrictions of ≤3.5 m, supporting rapid deployment. • After-Sales Service: Minimum 1-year full-vehicle warranty; nationwide chassis warranty coverage; lifetime service support for the superstructure. Per local procurement practice, equipment of this type is typically acquired via public tender or competitive consultation, with evaluation criteria emphasizing technical solution completeness, price reasonableness, and after-sales service commitments. II. Technical Solution Overview: EHY5045TWCE6 The EHY5045TWCE6 is a lightweight sewage treatment vehicle developed by Chengli Special Purpose Vehicle Co., Ltd. (No. 1 Chengli Avenue, Economic Development Zone, Suizhou City, Hubei Province). Built upon a Dongfeng chassis, its official announcement number is CLW5040TWCE6, and the vehicle fully complies with China VI emission standards. Key configurations include: • Water Treatment System: Multi-stage filtration combined with membrane separation technology—including bar screen, sedimentation tank, MBR membrane bioreactor tank, and disinfection unit—ensuring high treatment efficiency and clear effluent. • Powertrain System: Chassis equipped with a diesel engine delivering ~95 kW output, suitable for demanding road conditions. • Operational Convenience: PLC-based automated control system enabling one-button startup, significantly reducing manual operation complexity. • Safety Features: Overflow prevention alarm, automatic shutdown, emergency shutoff, and other safety mechanisms to ensure safe operation. According to MIIT-approved specifications, the vehicle’s gross vehicle weight rating (GVWR) is approximately 4,495 kg; rated payload is ~1,500 kg; effective tank volume is ~2.5 m³—ideal for operations on narrow urban streets. Per publicly disclosed tender data, the winning bid price for this model in the Yichang case was approximately RMB 380,000, inclusive of the complete vehicle, standard onboard tools, and first-year maintenance & warranty services. Data Comparison: EHY5045TWCE6 vs. Comparable Competitors Parameter EHY5045TWCE6 (Chengli) Competitor A Competitor B Treatment Capacit