Glass Fused to Steel (GFS) Anaerobic Fermentation Tanks by Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel): Advanced Technology for Efficient Biogas Production

Glass Fused to Steel (GFS) Anaerobic Fermentation Tanks by Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel): Advanced Technology for Efficient Biogas Production

As the world transitions toward sustainable energy and responsible waste management, anaerobic fermentation plays a vital role in converting organic waste into renewable biogas and useful biofertilizers. Central to this process are anaerobic fermentation tanks that provide controlled, airtight environments for biological degradation. Shijiazhuang Zhengzhong Technology Co., Ltd under the Center Enamel brand specializes in manufacturing cutting-edge Glass Fused to Steel (GFS) anaerobic fermentation tanks engineered for superior corrosion resistance, mechanical strength, and operational efficiency.

Understanding Anaerobic Fermentation Tanks

Anaerobic fermentation tanks, also known as anaerobic digesters, are sealed vessels where organic materials like agricultural residues, food waste, animal manure, and municipal sludge are decomposed by anaerobic microorganisms in an oxygen-free environment. This process produces biogas—a mixture mainly consisting of methane and carbon dioxide—and nutrient-rich digestate usable as fertilizer.

The design of these tanks must create optimal conditions including temperature control, mixing, gas-tight containment, and resistance to highly corrosive substances produced during digestion.

As a leading storage tank manufacturer worldwide. Center Enamel can provide Glass Lined Steel(GLS) tanks, fusion bonded epoxy tanks, stainless steel tanks, galvanized steel tanks and aluminum geodesic dome roofs, Wastewater and Biogas Project Equipments for global customers.

WasteWater Treatment Project Equipment Supply

Glass Fused to Steel (GFS) Technology: An Ideal Tank Material

GFS technology involves fusing molten glass enamel to both interior and exterior surfaces of steel plates at a temperature of approximately 820-930°C, producing a highly inert, hard, and corrosion-resistant surface bonded firmly to steel. This hybrid material combines:

• Strength and Flexibility: Inherent in the steel substrate, allowing resistance to mechanical loads.
• Corrosion and Chemical Resistance: Provided by the glass enamel, key for biogas tanks exposed to acidic and abrasive media.
• Hygienic, Non-Porous Surface: Preventing microbial buildup and facilitating cleanout.

Center Enamel’s GFS anaerobic fermentation tanks leverage this technology to outperform traditional steel or concrete digesters in longevity, maintenance, and environmental safety.

Design Features of Center Enamel GFS Anaerobic Fermentation Tanks

• Modular Bolted Panel Construction: Factory-fabricated GFS panels are bolted onsite with gasketed joints facilitating rapid assembly and future expansions.
• Tank Sizes: Customizable from small 10 m³ digesters to large-scale industrial units exceeding thousands of cubic meters.
• Roof Systems: Sealed fixed roofs or flexible double-membrane biogas storage covers designed to maintain gas-tightness and optimize pressure control.
• Internal Features: Mixing systems—including mechanical agitators or gas recirculation devices—to ensure uniform substrate contact and avoid sludge sedimentation.
• Temperature Control: Integrated heating coils or external jackets maintain mesophilic (35-40°C) or thermophilic (50-60°C) conditions optimal for microbial activity.
• Gas Management: High integrity gas collection and piping fitted to feed biogas utilization systems.
• Instrumentation and Controls: Sensors for pH, temperature, gas composition, pressure, and liquid level feed data to centralized control systems for process optimization.

Advantages of GFS Anaerobic Fermentation Tanks

1. Superior Corrosion Resistance

Biogas production generates corrosive substances like hydrogen sulfide and volatile fatty acids. The glass fuse enamel layer provides robust protection maintaining structural integrity and reducing costly corrosion failures.

2. Long Service Life

With a service life exceeding 30 years, GFS tanks require minimal repairs and maintenance compared to concrete or painted steel tanks.

3. Leak-Tight and Odor-Free Operation

Sealed bolted joints and glass barriers afford airtight containment critical for odour control and maximizing biogas capture.

4. Efficient Thermal Management

Steel substrate combined with modular design facilitates heating and insulation implementations ensuring stable microbial environments.

5. Environmentally Friendly Production and Disposal

GFS tanks are recyclable, and their durability reduces resource consumption for replacement and repair.

Applications

• Agricultural Waste: Livestock manure and crop residue digesters generating farm-scale or commercial biogas.
• Municipal Wastewater Treatment Plants: Stabilization of sewage sludge within anaerobic digestion units.
• Industrial Organic Waste: Food processing, brewery, pulp and paper, and chemical plant waste biogas generation.
• Landfill Gas Capture: Upgrading existing landfill biogas collection through enhanced digestion systems.
• Co-Digestion Facilities: Simultaneous digestion of diverse organic wastes enhancing gas yields.

Manufacturing and Quality Control

Center Enamel employs rigorous processes:

• Heat treatment and surface preparation for optimal glass enamel bonding.
• Dual-sided enameling for superior protection inside and out.
• Automated welding and assembly adhering to AWWA D103-09, ISO 28765, NSF/ANSI 61 and CE/EN1090 standards.
• Multi-step inspections including holiday testing, impact resistance, coating thickness and adhesion testing.
• Integration of custom design and accessory fitting according to client specifications.

Global Experience and Projects

Center Enamel’s GFS anaerobic tanks have been installed worldwide from Asia and Europe to North America and Africa, supporting biogas projects in agriculture, municipal treatment, and industry. Their modular design enables customized applications across small farms to large centralized plants.

Future Trends

• Smart digester controls incorporating AI and IoT for real-time performance optimization.
• Novel biogas upgrading and storage solutions integrated with GFS tank systems.
• Advanced material innovations combining GFS with composite linings for enhanced durability.
• Modular plug-and-play biogas units serving decentralized energy needs.

Center Enamel’s Glass Fused to Steel anaerobic fermentation tanks deliver a robust, efficient, and environmentally responsible platform for biogas and organic waste management. Their unique material advantages, combined with modular design and global expertise, make them preferred solutions for sustainable energy generation worldwide.

For engineering consultation, bespoke designs, or project collaboration, reach out to Center Enamel’s experienced technical team to advance your biogas initiatives.

Shijiazhuang Zhengzhong Technology Co.,Ltd is a professional manufacturer dedicated to the design and fabrication of bolted storage tanks since 1989. Our products range includes Glass-Fused-to-Steel (GFS) tanks, fusion bonded epoxy tanks, stainless steel tanks, galvanized steel tanks and aluminum geodesic dome roofs. With professional enameling R&D team and more than 20 enameling patents, Shijiazhuang Zhengzhong Technology Co.,Ltd has become the leader in bolted tanks industry of Asia. Our products are certified to ISO 9001, CE, NSF/ANSI 61, WRAS, ISO 28765, LFGB, BSCI, ISO 45001 and other international standards.

Shijiazhuang Zhengzhong Technology Co., Ltd is not only the first manufacturer in China which produces Glass-Fused-to-Steel tanks, but also the most experienced professional bolted tanks manufacturer in Asia. The engineering & design, product testing and quality system of Center Enamel Glass-Fused-to-Steel tanks is in strict accordance with AWWA D103-09, OSHA, ISO 28765, NSF/ANSI 61, NFPA and other international standards. Center Enamel Glass-Fused-to-Steel tanks are wildly used in drinking / potable water, industrial effluents, municipal sewage, bio-energy, landfill leachate, agriculture and other applications. Until 2023, Center Enamel bolted tanks have been exported to more than 100 countries including USA, Australia, Canada, Malaysia, Indonesia, Russia, UAE, Panama, Brazil and South Africa etc., the superior tank quality and prompt service gains us worldwide recognition.

As an outstanding containment and cover system provider with more than 30 years of experience, Shijiazhuang Zhengzhong Technology Co., Ltd sincerely expects to establish long-term cooperation with the local partners throughout the world and make continuous contribution to the development of the industry.