Double Membrane Biogas Holder for Anaerobic Digester Tanks: A Primary Component for Collecting and Regulating the Low-Pressure Gas Generated Inside

Double Membrane Biogas Holder for Anaerobic Digester Tanks: A Primary Component for Collecting and Regulating the Low-Pressure Gas Generated Inside

The Anaerobic Digester Tank is the foundational unit in biogas production, converting various organic feedstocks into stabilized digestate and valuable biogas. For the AD process to be safe, efficient, and profitable, the low-pressure, variable flow of gas generated inside must be instantly collected, hermetically sealed, and regulated to ensure a stable supply for utilization. The absence of an effective gas management system directly leads to energy loss, safety risks from pressure imbalances, and operational instability.

The Double Membrane Biogas Holder is recognized globally as the most effective solution for this purpose. It is a primary component for collecting and regulating the low-pressure gas generated inside the digester. By serving as the integrated, flexible dome over the tank, this holder performs three essential, simultaneous functions: it provides a gas-tight seal, dynamically buffers the fluctuating gas volume and pressure, and ensures continuous, safe operation by regulating the head pressure on the reactor.

Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel), a global leader in advanced containment solutions, specializes in engineering high-performance storage systems. Our Double Membrane Biogas Holders are state-of-the-art gas holders designed to integrate seamlessly with various AD tanks, offering superior containment, pressure regulation, and long-term durability.

Product Advantages for Gas Collection and Regulation

Center Enamel’s Double Membrane Biogas Holders are meticulously engineered to maximize the efficiency, safety, and operational control of anaerobic digester tanks. The flexible dome design provides distinct advantages for AD facilities.

Integrated Gas Collection and Hermetic Sealing

The system acts as the integrated flexible roof of the digester tank, ensuring maximum gas capture efficiency by collecting the gas immediately as it rises from the slurry or sludge. This direct integration provides a crucial hermetic seal, preventing the escape of valuable biogas and odors while protecting the digester contents from atmospheric contamination. This gas-tight integrity is fundamental to maximizing the energy yield and ensuring environmental compliance.

Dynamic Pressure and Volume Regulation

Biogas production rates are never constant, fluctuating with temperature and feedstock changes. The balloon's core function is to provide dynamic pressure and volume regulation. The volume of the inner membrane dynamically expands and contracts to accommodate the natural volume fluctuations. This capability acts as a perfect buffer, regulating the head pressure on the digester contents, preventing stress on the tank structure, and ensuring a smooth, stable flow of gas to downstream equipment like engines or scrubbers.

Superior Durability and Safety Features

The double-membrane architecture ensures exceptional structural resilience. The outer membrane is inflated with air to form a structurally rigid, protective dome that shields the inner gas-holding membrane from external environmental stresses, including high winds, heavy precipitation, and ultraviolet (UV) radiation. Furthermore, operating at a naturally low pressure, the system is inherently safe, minimizing the risks associated with storing flammable gas in an integrated system, leading to low maintenance requirements and a long operational lifespan.

Company Advantages

Center Enamel’s standing as a premier global supplier is built on our deep technical expertise and commitment to quality. As a pioneering manufacturer of Glass-Fused-to-Steel (GFS) tanks in China, our company possesses decades of proven history in high-performance containment solutions. Our advanced production capabilities are backed by more than 20 patents in enameling technology and a dedicated research and development team focused on innovation.

Our dedication to quality is demonstrated through our strict adherence to international standards. Our products and processes conform to the most demanding international benchmarks, including standards for quality management, drinking water safety, and occupational health. These certifications provide an independent and verifiable guarantee of quality, safety, and compliance with the most stringent regulations, which is critical for successful operation in international markets. This commitment, combined with our proven global track record of successful projects in over 100 countries, makes us a reliable and expert partner for any AD or biogas project.

Product Application Areas

Center Enamel's Double Membrane Biogas Holders are essential components across all sectors utilizing anaerobic digestion technology:

Anaerobic Digester Tanks (Primary Component): Used for instantaneous capture and buffering of biogas generated from manure, slurry, municipal sludge, or industrial organic waste.

Agricultural and Livestock Wastewater Treatment: Essential for farms processing manure and agricultural residues, enabling on-site energy generation.

Industrial Wastewater and Food Waste Treatment: Capturing and storing biogas generated from high-strength organic effluent to offset high energy consumption.

Biomethane and Compressed Biogas (CBG) Plants: Providing the essential intermediary buffer storage before high-pressure purification and compression.

Global Reach and Proven Excellence: Project Cases

Our extensive portfolio of successful containment projects showcases our capability to engineer robust, sealed, and durable solutions—expertise directly applied to our high-performance biogas holders. The following non-fictitious cases demonstrate our global reach and technical excellence:

Hebei Cangzhou Biogas Project: We supplied 2 tanks with a total capacity of 3,077 cubic meters for a biogas project in Hebei, China, demonstrating our capability in energy recovery infrastructure.

Anhui Hefei Food Waste Treatment Project: We provided 6 tanks with a total capacity of 685 cubic meters for a food waste treatment facility in Anhui, China, highlighting our role in sustainable waste-to-energy solutions crucial for biogas production.

Muyuan Group Suining 3rd Farm Livestock Wastewater Project: For a major agricultural client, we supplied 2 tanks with a total capacity of 17,962 cubic meters for a livestock wastewater project, demonstrating our expertise in large-volume, sealed agricultural containment critical for biogas management.

Conclusion

For Anaerobic Digester Tanks, the Double Membrane Biogas Holder is the optimal, most functional solution. By serving as the primary component for collecting and regulating the low-pressure gas, it ensures the complete capture and effective pressure stabilization of the methane-rich fuel. Our systems empower AD operators to maximize gas output, ensure stable energy utilization, and drive their facilities toward greater sustainability and profitability with a reliable, integrated solution.