Double Membrane Biogas Holder for a Wastewater Treatment Plant: General Solution for Storing and Buffering Collected Digester Gas Volumes

Double Membrane Biogas Holder for a Wastewater Treatment Plant: General Solution for Storing and Buffering Collected Digester Gas Volumes

A standard Wastewater Treatment Plant relies on anaerobic digestion (AD) as a fundamental process to stabilize organic solids (sludge or highly concentrated effluent). This process yields a significant co-product: methane-rich digester gas (biogas). For the plant to maximize operational efficiency and realize true resource recovery, this gas must be reliably stored and buffered to ensure a stable fuel supply to offset the plant's considerable energy consumption. The storage solution must be flexible enough to handle fluctuating production volumes while ensuring safety and environmental compliance.

The Double Membrane Biogas Holder is the industry-leading, general solution for storing and buffering collected digester gas volumes. Installed either as an integrated flexible roof on the digester or as a compact, free-standing unit , this holder provides a dynamic, hermetic reservoir. This system ensures every cubic meter of gas is captured, pressure fluctuations are safely managed, and a stable, continuous supply is maintained for downstream energy reuse, minimizing operational costs and maximizing sustainability.

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 within the infrastructure of any wastewater treatment plant, offering superior containment, pressure regulation, and long-term durability.

Product Advantages for Digester Gas Management

Center Enamel’s Double Membrane Biogas Holders are meticulously engineered to handle the challenges of standard digester gas output, focusing on maximizing plant efficiency and methane recovery.

Flexible Buffering and Pressure Regulation

The inherent variability of wastewater influent and digestion kinetics means gas production is rarely constant. The balloon's design provides a flexible and dynamic gas reserve capacity that can dynamically expand and contract to accommodate the natural volume fluctuations in digester gas. This dynamic buffering is essential for regulating the low pressure of the gas, preventing system instability, and ensuring a smooth, constant flow to utilization equipment (e.g., CHP or boilers). This stability is critical for maximizing the internal energy offset of the plant.

Reliable Gas Capture and Environmental Compliance

The system acts as a crucial hermetic seal over the digester, which is paramount for both maximum gas capture efficiency and fugitive emission control (preventing the release of methane). Furthermore, the sealed design significantly reduces the odor emissions associated with wastewater and sludge digestion, ensuring better environmental performance and compliance with local regulations.

Support for Aluminum Dome Roofs

Where maximum corrosion resistance and structural longevity are required for the digester tanks—a critical need in corrosive wastewater environments—the Double Membrane Holder can be installed on or adjacent to a tank protected by an Aluminum Dome Roof . While the membrane system provides the essential flexible gas-tight envelope, the aluminum dome offers superior long-term corrosion protection and structural support for the entire digester tank structure, enhancing overall system durability.

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 municipal or industrial wastewater treatment project.

Product Application Areas

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

Wastewater Treatment Plant: General solution for storing and buffering collected digester gas volumes.

Municipal Sewage Treatment Plant: Stores biogas produced from sewage sludge digestion for energy reuse.

Industrial Wastewater Treatment Plant: Captures and stores biogas generated during anaerobic effluent treatment.

Biogas Plant: The core component for flexible, low-pressure, on-site gas storage.

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 for a biogas project in France, demonstrating our capacity to deliver high-integrity solutions for European renewable energy markets.

Anhui Liu'an Food Waste Treatment Project: We provided 1 tank for a food waste treatment facility in Anhui, China, highlighting our role in sustainable waste-to-energy solutions.

Muyuan Group Henan Livestock Wastewater Treatment Project: For a major agricultural client, we supplied 2 tanks for a livestock wastewater project, demonstrating our expertise in large-volume, sealed agricultural containment critical for biogas management.

For any Wastewater Treatment Plant, the Double Membrane Biogas Holder is the definitive operational solution. As the general solution for storing and buffering collected digester gas volumes, it ensures the safe, continuous utilization of the methane-rich fuel, allowing the plant to achieve cost-efficiency, energy independence, and superior environmental performance.

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