Double Membrane Biogas Holder for Dry Digester Tanks: A Flexible, High-Volume Storage Solution for the Gas Generated by Solid-State Fermentation

Double Membrane Biogas Holder for Dry Digester Tanks: A Flexible, High-Volume Storage Solution for the Gas Generated by Solid-State Fermentation

Dry Digester Tanks are a specialized form of anaerobic digestion (AD) that processes solid, high-solids-content organic waste, such as source-separated organics, agricultural crop residues, and yard waste. This solid-state fermentation (or dry AD) process is distinct from conventional wet digestion and requires robust, reliable infrastructure. Although the feedstock is solid, the resulting co-product is still biogas, a valuable, low-pressure fuel. For the dry AD facility to efficiently convert its gas into usable energy (heat, electricity, or vehicle fuel), it needs a flexible and high-volume storage system that can manage the typically large, yet variable, gas output characteristic of batch or semi-continuous dry fermentation.

The Double Membrane Biogas Holder is the premier choice for this application. It provides a flexible, high-volume storage solution for the gas generated by solid-state fermentation. Installed externally or integrated with the digester, this holder offers the necessary capacity to buffer large, fluctuating gas volumes. The robust design ensures secure, low-pressure containment while providing the necessary structural resilience to withstand diverse external conditions, which is crucial for maximizing the energy recovery from challenging solid waste streams.

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 perfectly with high-solids dry digester tanks, offering superior gas containment, pressure regulation, and long-term durability.

Product Advantages for High-Volume Dry AD

Center Enamel’s Double Membrane Biogas Holders are meticulously engineered to handle the substantial and variable gas output of dry digester tanks, maximizing the efficiency and safety of solid-state fermentation plants.

High-Volume, Flexible Storage Capacity

Dry AD systems often process large quantities of feedstock, leading to significant, yet variable, gas output. The balloon's design provides high-volume, flexible storage capacity that can dynamically expand and contract to accommodate these substantial gas fluctuations. This dynamic buffering capability is essential, as it ensures a smooth, stable supply of gas to downstream equipment (e.g., combined heat and power engines), protecting them from the pressure spikes and drops characteristic of batch fermentation processes.

Superior Structural Integrity and Durability

The double-membrane architecture ensures exceptional resilience, which is particularly important for large external storage. The inner membrane securely contains the biogas, while the outer membrane is air-inflated to form a rigid, protective dome. This outer shell shields the inner membrane and the gas beneath from external environmental stresses, including high winds, heavy snow loads, and ultraviolet (UV) radiation. This robust, durable design minimizes wear and tear, leading to low maintenance requirements and a long operational lifespan.

Inherent Safety and Cost-Effectiveness

Operating at a naturally low pressure, the system is inherently safe, minimizing the risks associated with storing flammable gas in a high-capacity system. Furthermore, the modular, lightweight nature of the biogas holder ensures simplified installation compared to building large, rigid gas holders. This reduction in civil engineering requirements makes the double membrane system a highly cost-effective solution for managing the gas output of large dry digester tanks.

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 dry AD or high-solids biogas project.

Product Application Areas

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

Dry Digester Tanks (Solid-State Fermentation): Providing the flexible, high-volume storage required for gas generated from solid waste streams like food scraps, yard waste, and crop residues.

Large-Scale Biogas Plants: Essential for buffering massive gas volumes before upgrading or direct energy conversion.

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

Agricultural Biomass Digesters: Used for storing gas generated from high-fiber biomass and crop residues.

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:

France Biogas Project: We supplied 1 tank with a total capacity of 2,215 cubic meters for a biogas project in France, demonstrating our capacity to deliver high-integrity solutions for European renewable energy markets.

Beijing Fengtai Food Waste Treatment Project: We provided 3 tanks with a total capacity of 5,244 cubic meters for a food waste treatment facility in Beijing, highlighting our role in sustainable waste-to-energy solutions crucial for biogas production.

Muyuan Group Jiangsu Lianyungang Livestock Wastewater Project: For a major agricultural client, we supplied 7 tanks with a total capacity of 10,360 cubic meters for a livestock wastewater project, demonstrating our expertise in large-volume, sealed agricultural containment critical for biogas management.

Conclusion

For Dry Digester Tanks, the Double Membrane Biogas Holder is the optimal, most functional solution for gas management. By providing a flexible, durable, and high-volume storage system, it effectively manages the substantial, fluctuating gas output of solid-state fermentation. Our systems empower dry AD operators to maximize gas capture, ensure stable energy utilization, and drive their facilities toward greater sustainability and profitability in the circular economy.