20 m3 Leachate Tanks Made in China: Corrosion-Resistant Storage

A 20 m3 leachate tank stores corrosive landfill leachate, often below pH 2, in a compact vessel built for harsh chemistry. Made in China by Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel), the Glass-Fused-to-Steel (GFS) version fuses enamel at 820-930°C to a 0.25-0.45 mm layer designed to AWWA D103-09 and ISO 28765, exported to 100+ countries since 2008.

What a 20 m3 Leachate Tank Is

A 20 m3 leachate tank is a small bolted vessel holding roughly 20 cubic meters of landfill or industrial leachate, a stream often acidic below pH 2 and high in COD and ammonia. In Glass-Fused-to-Steel (GFS) form, the interior carries vitreous enamel fused at 820-930°C to a 0.25-0.45 mm inert layer that withstands the aggressive chemistry painted steel cannot survive.

• Volume: about 20 m3.
• Stream: pH<2, high COD.
• Layer: 0.25-0.45 mm enamel.
• Edge: beats painted steel.

Key Characteristics, Components, and Types

Compact GFS leachate tanks use bolted panels with 8.8-grade fasteners, a sealed or vented roof, and manways and flanges for transfer. Alternatives are small FRP or rubber-lined steel, but GFS offers a monolithic inert surface at low volume. Standard grades tolerate pH 1-14 special, and the tank ships flat-packed from China for fast local assembly.

• Panels: bolted, 8.8-grade.
• Roof: sealed or vented.
• Grade: pH 1-14 special.
• Ship: flat-packed from China.

Applications and Operating Conditions

They serve landfills, transfer stations, and industrial sites needing interim leachate storage before treatment. A 20 m3 tank buffers collection-truck deliveries or equalizes pH before the main plant. Because leachate is aggressively acidic and ammonia-rich, the GFS enamel's inertness is the reason the tank lasts 30-50 years instead of corroding within seasons.

• Sites: landfill, transfer, industry.
• Use: buffer or equalize.
• Why: inert enamel.
• Life: 30-50 years.

Technical Considerations

Specify the leachate pH (often <2), temperature (5-45°C), and COD or ammonia load; set enamel DFT at 0.25-0.45 mm. The shell is calculated to AWWA D103-09 and ISO 28765, plates blasted to Sa 2.5 and holiday-tested at 1500 V. Even at 20 m3, inlet, outlet, and ventilation follow the same code discipline as large tanks, and liner grade is confirmed against the measured pH.

• pH: often <2.
• Temp: 5-45°C.
• Coat: 0.25-0.45 mm DFT.
• Test: 1500 V per m2.
• pH tolerance: 1-14 special.
• Design life: 30-50 years.
• Bolt grade: 8.8.
• Code basis: AWWA D103-09 / ISO 28765.
• Limitation to check: COD and ammonia.

Advantages and Limitations

Against small FRP and rubber-lined steel, a Glass-Fused-to-Steel (GFS) leachate tank wins on a monolithic inert surface for pH 1-14 special. Use the table to match the material to leachate chemistry, footprint, and required life.

• Advantage: pH<2 resistant, fast.
• Advantage: 100+ country record.
• Limitation: special grade for extremes.
• Boundary: confirm grade in spec.

Best Practices: Buying from China

Send the leachate analysis (pH, COD, ammonia), require the ISO 28765 calculation, the 1500 V holiday test, and a coating log. Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) issues drawings, NDE records, and inspection packages per tank, supporting audit and financing for China-sourced leachate tanks worldwide.

• Send: pH, COD, ammonia.
• Require: ISO 28765 and 1500 V.
• Log: coating thickness.
• Package: drawings plus NDE.

A 20 m3 leachate tank made in China is a corrosion-chemistry decision first. Specify the enamel grade for pH<2, the code math, and the test proof, and the small tank outlasts painted steel by decades.

Frequently Asked Questions (FAQ)

What is a 20 m3 leachate tank?

A compact GFS vessel of about 20 m3 that stores acidic landfill leachate, often below pH 2, with an inert enamel lining for a 30-50 year life.

Why GFS for leachate?

The enamel resists pH 1-14 special grades; painted steel corrodes quickly in the aggressive, ammonia-rich stream.

Which standard applies?

The shell is designed to AWWA D103-09 and ISO 28765, with plant control under ISO 9001 and ISO 45001.

How is the coating verified?

Steel is blasted to Sa 2.5, the enamel is applied to 0.25-0.45 mm DFT, and holiday-tested at 1500 V per square meter.

Is China supply reliable?

Center Enamel has exported since 2008 to 100+ countries, with drawings, NDE records, and inspection packages per tank.

Can it be customized?

Yes. Enamel grade, roof, nozzles, and ventilation are engineered per leachate analysis, with drawings issued per tank.