Hebei Waste-to-Energy Project: Custom Leachate Wastewater Storage Vessels Designed to GB50341 Standards

As municipal infrastructure transitions toward sustainable energy, Waste-to-Energy (WTE) and solid waste incineration plants face a critical operational challenge: the safe management and treatment of highly corrosive and volatile leachate wastewater. In Hebei, China, Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel) successfully delivered a high-specification wastewater treatment containment solution, deploying two massive vertical steel storage units engineered to withstand severe chemical, seismic, and environmental pressures.

This Municipal Solid Waste Incineration and Power Generation Project showcases Center Enamel's advanced technical capabilities in fabricating custom industrial storage systems that satisfy stringent national safety and construction codes.

The core specifications of the Hebei project include:

Municipal solid waste leachate is one of the most difficult industrial wastewater streams to manage. Because the medium is inherently flammable, explosive, and mildly toxic, the storage vessels must function as an absolute barrier against leakage, volatile emissions, and structural degradation.

Our engineering team integrated several advanced technical safeguards into the design of these Φ9.17m * 19.2m vertical storage units:

Standing at over 19 meters in height, the vertical cylindrical welded steel tanks are built to endure localized climate extremes in North China. The structural design accounts for a basic wind pressure of 600 N/m² and a tank roof load capability of 200 kgf/m². Furthermore, given the regional geology, the vessels feature a Seismic Fortification Intensity of 7 on the Mercalli scale, guaranteeing physical integrity during seismic events.

With a medium density of 1000 kg/m³ and complex chemical compounds present in waste leachate, structural steel faces rapid uniform and localized pitting corrosion. To guarantee an extended operational lifespan during continuous 35°C operating cycles, Center Enamel implemented a robust 3 mm corrosion allowance. This structural safety margin ensures the tank shell remains uncompromised over decades of service.

For critical municipal infrastructure, regulatory alignment is non-negotiable. The two large-scale vessels were engineered and constructed strictly according to:

• GB50341-2003: Code for Design of Vertical Cylindrical Welded Steel Oil Tanks
• GB50128-2005: Code for Construction and Acceptance of Vertical Cylindrical Welded Steel Oil Tanks

Welding procedures and electrode models adhered fully to JB/T4709-2000 specifications, employing full penetration welds across all critical structural joints to eliminate any micro-fissures or stress-concentration points where hazardous leachate gases could collect.

To ensure zero-leakage performance before commissioning, both vertical vessels underwent rigorous on-site Non-Destructive Testing (NDT) and structural validation in compliance with GB50128-2005:

• Hydrostatic Validation: A complete full-water hydrostatic test was executed to simulate maximum structural load conditions and verify foundational settlement stability.
• Airtightness Testing: To prevent the escape of volatile, explosive gases from the mildly toxic leachate, an airtightness test was performed under a pressure of 0.006 MPa, confirming a perfect hermetic seal across the tank roof and all connecting pipe nozzles.

Executing high-capacity wastewater projects for the Waste-to-Energy sector reflects the comprehensive engineering, design, and manufacturing expertise of Shijiazhuang Zhengzhong Technology Co., Ltd.

With a 150,000㎡ advanced manufacturing facility and over two decades of global trade and industrial execution, we deliver tailored pressure vessels, Glass-Fused-to-Steel (GFS) tanks, and Fusion Bonded Epoxy (FBE) tanks to over 100 countries. Holding internationally recognized credentials—including ASME, CE, and ISO9001 certifications—Center Enamel remains the trusted technical partner for complex water treatment, chemical processing, and environmental engineering projects worldwide.

Looking to optimize containment infrastructure for your next industrial water treatment or waste-to-energy facility? Contact our global engineering consulting team to request technical proposals and custom drawings tailored to your exact project parameters.