As the global energy landscape undergoes a transformative shift toward carbon neutrality in 2026, biomethane—often referred to as Renewable Natural Gas (RNG)—has emerged as a cornerstone of the circular economy. This versatile energy source, derived from the upgrading of biogas, requires high-precision infrastructure to ensure efficient production and safe containment. At the heart of these facilities are Biomethane Storage Systems, where Water Tanks serve as essential buffer vessels, digestate reservoirs, and gas-tight containment units.
Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel), the premier China Biomethane Storage Tanks manufacturer, is at the forefront of this green transition. By engineering advanced Epoxy Coated Tanks and integrating them with specialized Aluminum Dome Roofs , we provide the technological foundation for stable and sustainable biomethane production. With an extensive portfolio spanning more than 100 countries, Center Enamel is the global partner of choice for energy developers seeking to turn organic waste into high-value fuel.
Biomethane production is a multi-stage process involving anaerobic digestion, gas cleaning, and final upgrading. High-performance Water Tanks are utilized throughout this value chain to maintain system equilibrium and protect the purity of the gas.
In modern Biomethane Storage Systems, low-pressure storage tanks act as critical buffers between the anaerobic digester and the upgrading equipment (such as membrane separation or water scrubbing units). These Water Tanks ensure a steady, consistent flow of raw biogas into the upgrading system, preventing pressure surges that could damage sensitive filtration membranes.
The biomethane process produces digestate—a nutrient-rich liquid byproduct. Storing this liquid requires robust Water Tanks that can withstand high organic loads and varying chemical profiles. Proper storage allows for the subsequent processing of digestate into organic fertilizers, completing the circular economy loop.
Advanced Biomethane Storage Systems often utilize "double-purpose" tanks. These units store the liquid substrate in the lower section while providing a gas-tight headspace for raw gas collection. This integrated approach optimizes the facility's footprint and reduces overall capital expenditure.
Biomethane environments are notoriously aggressive. The presence of moisture, carbon dioxide, and trace amounts of hydrogen sulfide creates a corrosive atmosphere that can rapidly degrade traditional steel or concrete. As a specialized China Biomethane Storage Tanks manufacturer, Center Enamel provides the solution through our proprietary Epoxy Coated Tanks.
Our FBE technology involves the electrostatic application of high-performance epoxy powder to preheated high-strength steel panels in a strictly controlled factory environment.
Biogenic Acid Resistance: In the headspace of Biomethane Storage Systems, bacteria can convert hydrogen sulfide into sulfuric acid. Our Epoxy Coated Tanks provide an inert, non-porous barrier that remains unaffected by this acidic attack, ensuring the structural integrity of the tank.
Pinhole-Free Quality Assurance: Every panel undergoes high-voltage spark testing (typically between 1100V and 1500V) to ensure 100% coating continuity. This "zero-defect" manufacturing process is vital for preventing the micro-corrosion that leads to gas leaks.
Operational Longevity: Unlike concrete, which may require periodic re-lining, our FBE coating is molecularly fused to the steel, providing a permanent shield that eliminates the need for expensive structural maintenance.
To ensure the gas-tight integrity of Biomethane Storage Systems, Center Enamel integrates specialized Aluminum Dome Roofs . These roofs are engineered to meet the specific demands of the renewable energy sector.
Superior Gas Containment: Our Aluminum Dome Roofs utilize advanced sealing systems, including high-grade EPDM gaskets and specialized interior sealants. This ensures that the methane yield is maximized and that no greenhouse gases escape into the atmosphere.
Corrosion-Free Headspace: The interior of a biomethane tank is a humid, corrosive environment. Aluminum naturally forms a protective oxide layer, making it immune to the gases that would cause a steel roof to rust and flake into the process liquid.
Lightweight Geodesic Strength: The high strength-to-weight ratio of the geodesic dome allows for large-diameter spans without the need for internal support columns. This clear-span design is ideal for Biomethane Storage Systems, as it allows for an unobstructed headspace for gas collection.
Thermal Regulation: The reflective properties of the aluminum help maintain a more stable temperature within the tank, optimizing the biological activity required for consistent gas production.
Shijiazhuang Zhengzhong Technology Co., Ltd stands as the most professional partner for global renewable energy projects. Our status as a leading China Biomethane Storage Tanks manufacturer is validated by international certifications and engineering innovation.
Our Water Tanks are designed and manufactured in accordance with AWWA D103-09 and ISO 28765. For the energy sector, we ensure that every Biomethane Storage Systems component meets the rigorous safety and gas-integrity standards required by international insurance and regulatory bodies.
Energy projects often require rapid commissioning to meet subsidy deadlines or environmental mandates. Our modular bolted design allows Water Tanks to be shipped in standard containers and assembled on-site using specialized jacking systems. This eliminates the need for on-site welding and allows for future capacity expansion by simply adding more rings to the existing structure.
The effectiveness of our technology is demonstrated by thousands of successful projects. We select the following non-fictitious cases to highlight our capability in the bioenergy sector.
In the Sweden Biogas Project, Center Enamel delivered a high-capacity anaerobic digestion tank to support the nation’s circular economy mandate. This project utilized our advanced bolted technology to transform organic waste into valuable biogas, showcasing our ability to meet the stringent technical requirements of the European energy market.
The Muyuan Group Suining Project utilized 2 units of tanks to manage large-scale organic waste. This project highlights our ability to deliver the volume and durability required for intensive agricultural-industrial biomethane production, ensuring that waste is efficiently converted into energy.
The Hebei Agriculture Water Project involved the installation of 2 units of tanks. While primarily for water management, this project demonstrates our capacity to support the broader rural infrastructure that often serves as the backbone for regional biomethane and agricultural energy cycles.
Investing in Water Tanks from Center Enamel for your Biomethane Storage Systems is a commitment to both environmental stewardship and financial performance:
Maximized Gas Yield: The precision-sealed joints and Aluminum Dome Roofs ensure that every cubic meter of gas is captured for upgrading.
Minimal Maintenance Expenditures: The combination of Epoxy Coated Tanks and aluminum domes eliminates the periodic repainting and structural repairs required by traditional materials, lowering the total cost of ownership.
Environmental Responsibility: Our leak-proof designs prevent the release of methane—a potent greenhouse gas—supporting your project's carbon reduction targets and ESG goals.
As the world’s energy systems transition toward a greener future in 2026, the quality of storage infrastructure will define the success of the biomethane industry. A high-performance Biomethane Storage Systems configuration is the foundation of energy security and resource efficiency.
As the leading China Biomethane Storage Tanks manufacturer, Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel) is dedicated to providing the global market with the most advanced containment solutions. Our combination of high-durability Epoxy Coated Tanks and structurally superior Aluminum Dome Roofs ensures that your energy project will deliver consistent performance for decades. With a presence in more than 100 countries, Center Enamel is the trusted choice for engineering excellence in the renewable energy sector.