In a specialized sludge transportation procurement project by a municipal sanitation department in Nanyang City, the 24 m³ SINOTRUK-chassis sludge dump truck emerged as the core requirement. These vehicles are primarily deployed for sludge transfer from wastewater treatment plants and river dredging sites—operating under complex conditions, high payload demands, and intensive duty cycles. Based on publicly available tender information and Chengli Special Purpose Vehicle’s winning proposal, this article provides an in-depth analysis across key dimensions—including cost comparison between diesel and battery-electric variants, operational scenario differences, and charging infrastructure requirements—to serve as a practical reference for similar procurement projects. I. Procurement Background and Core Requirements This procurement was initiated by the Urban Management Bureau of a district in Nanyang City, with a budget capped at approximately RMB 1.243 million, aiming to acquire three 24 m³ sludge dump trucks for daily transport between local wastewater treatment plants and the sludge disposal center. Key requirements included: • Payload & Capacity: Standard 24 m³ cargo box to ensure efficient single-trip transportation; • Chassis Powertrain: SINOTRUK brand chassis meeting China VI emission standards to ensure road legality; • Sealing Performance: Fully sealed body design mandatory to prevent leakage and odor dispersion during sludge transport; • After-sales Support: Nationwide chassis warranty and long-term service coverage for the superstructure. Per local procurement practice, bidders were required to submit complete MIIT announcement parameters, chassis certificates of conformity, and comprehensive after-sales service plans. Leveraging its mature MIIT announcement resources (e.g., derivative models such as CLW5180GSSD6) and localized service network, Chengli Special Purpose Vehicle successfully delivered three 24 m³ SINOTRUK sludge dump trucks. II. Diesel vs. Battery-Electric: Cost and Performance Comparison Although this procurement explicitly specified diesel-powered units, battery-electric sludge trucks have entered pilot operations in multiple regions amid the broader new-energy transition. The following comparative analysis draws upon publicly disclosed tender data and Chengli’s product database: Comparison Dimension Diesel Version (SINOTRUK Chassis) Battery-Electric Version (Representative Brand Example) Purchase Price Approx. RMB 360,000/unit (per public tender data) Approx. RMB 650,000–750,000/unit (per comparable tenders) Operating Cost (per km) Approx. RMB 1.5–2.0 (diesel price: RMB 7.5/L) Approx. RMB 0.3–0.5 (electricity rate: RMB 0.6/kWh) Range 400–600 km on full tank 100–150 km on full charge (range reduced under heavy load) Maintenance Cost Conventional engine & transmission servicing: ~RMB 12,000/year Battery & motor maintenance: ~RMB 5,000/year Applicable Scenarios Long-haul transport; areas lacking charging infrastructure Short-haul fixed routes; facilities equipped with charging stations Policy Subsidies No special subsidies available Operational subsidies available in some regions: RMB 50,000–80,000/vehicle Note: Data above is synthesized from tender announcements across multiple regions and Chengli product specifications; actual costs may vary by locality. Conclusion: For non-core cities like Nanyang—where typical sludge transport distances range from 20–50 km and charging infrastructure remains underdeveloped—the diesel version remains the more economical and reliable choice. However, should future site upgrades include dedicated charging facilities, the battery-electric variant offers significant long-term operating-cost advantages. III. Operational Scenario Differences: Practical Considerations for Diesel vs. Battery-Electric Versions 1. Advantages of Diesel Versions in Real-World Applications • Operational Flexibility: No charging downtime required—ideal for multi-stop or non-fixed route operation