Biogas Membrane Guide: Double Membrane Biogas Holder for Efficient Biogas Storage
May 21, 2026
Modern biogas plants rely on reliable biogas storage systems to keep gas production stable and efficient. A high-quality biogas membrane helps protect stored gas from weather, pressure changes, and corrosion while reducing maintenance compared with traditional steel tanks. Today, many facilities choose a double membrane biogas holder because the biogas double membrane design offers better flexibility, safety, and operating performance. Working with experienced biogas membrane manufacturers is also important, since membrane quality and system design directly affect the lifespan and reliability of the entire biogas project.
What is a Biogas Membrane
A biogas membrane is a flexible, gas-tight membrane used to store and protect biogas in anaerobic digestion systems. In a double membrane biogas holder, the inner membrane holds the gas, while the outer membrane forms a protective cover and helps maintain stable pressure for safe biogas storage.
Unlike a biogas upgrading membrane, which separates methane from carbon dioxide, a biogas double membrane is designed for gas storage. It is commonly used in agricultural biogas plants, wastewater treatment facilities, and industrial biogas projects where reliable storage capacity, weather resistance, and low maintenance are important.
How Does a Double Membrane Biogas Holder Work
Inner and Outer Membranes
A double membrane biogas holder uses two separate membranes to keep gas storage stable and protected. The inner membrane expands and contracts as biogas volume changes, while the outer membrane stays inflated to form a strong protective cover. This biogas double membrane structure helps protect the stored gas from wind, rain, UV exposure, and pressure fluctuations.
Constant Pressure Control
The pressure control cabinet works with the air supply system to keep the space between the two membranes under steady pressure. This allows the biogas membrane to maintain its shape and helps deliver gas at a stable pressure for downstream use.
Biogas Inlet and Outlet
Biogas enters the holder through the pipeline and is stored inside the inner membrane. When the plant needs gas, the system releases it through the outlet pipe to connected equipment such as generators or gas treatment units. This makes the system suitable for continuous and reliable biogas storage in agricultural, municipal, and industrial biogas projects.
Key Benefits of Biogas Membrane
Excellent Corrosion Resistance
A biogas membrane is highly resistant to moisture, hydrogen sulfide, and other corrosive gases commonly found in biogas systems. Compared with traditional steel tanks, membrane-based systems require less maintenance and offer a longer service life in demanding operating environments.
Strong Weather and UV Resistance
High-quality membranes are designed to withstand outdoor conditions such as sunlight, rain, wind, and temperature changes. Many professional biogas membrane manufacturers use specialized coating materials to improve UV resistance, durability, and overall system reliability.
Flexible and Efficient Biogas Storage
A double membrane biogas holder can automatically adjust to changes in gas production and consumption. The flexible inner membrane expands and contracts based on gas volume, making the system ideal for stable and efficient biogas storage in continuously operating plants.
Lower Installation and Maintenance Costs
Compared with concrete or steel structures, a biogas membrane system is lighter, easier to install, and more cost-effective to transport. Its simple structure also helps reduce long-term maintenance and operating costs for plant owners.
Technical Specifications of Double Membrane Biogas Holders
High-quality biogas membrane systems must be designed with the right storage capacity, structural dimensions, and pressure stability for different project requirements. The following specifications show the standard sizes and structural parameters of Biowatt-Biogas double membrane biogas holder systems.
Double Membrane Dry Spherical Gas Holder Specifications
| Gas Storage Volume (m³) | Sphere Diameter D (m) | Sphere Height H (m) |
|---|---|---|
| 100 | 6.7 | 5.4 |
| 200 | 8.2 | 6.5 |
| 300 | 9.4 | 7.5 |
| 400 | 10.2 | 8 |
| 500 | 10.8 | 8.6 |
| 600 | 11.8 | 9.5 |
| 750 | 12.5 | 9.8 |
| 1000 | 13.6 | 10.2 |
| 1500 | 15.7 | 12.3 |
| 2000 | 17.3 | 13.3 |
| 2500 | 18.5 | 14.4 |
| 3000 | 19.7 | 15.3 |
| 4000 | 21.8 | 17 |
| 5000 | 23.4 | 18.2 |
Double Membrane Gas Holder Size Specifications
| Inner Membrane Volume (m³) | Outer Membrane Volume (m³) | Node Diameter (m) | Outer Membrane Height (m) | Sphere Diameter (m) |
|---|---|---|---|---|
| 100 | 112 | 5.8 | 4.6 | 6.4 |
| 200 | 224 | 7.3 | 5.8 | 8.1 |
| 300 | 336 | 8.3 | 6.7 | 9.3 |
| 500 | 560 | 9.9 | 7.9 | 11 |
| 600 | 672 | 10.5 | 8.4 | 11.7 |
| 1000 | 1120 | 12.4 | 10 | 13.8 |
| 1500 | 1680 | 14.2 | 11.4 | 15.8 |
| 2000 | 2240 | 15.6 | 12.5 | 17.2 |
| 2500 | 2800 | 16.9 | 13.5 | 18.8 |
| 3000 | 3360 | 17.9 | 14.4 | 19.9 |
| 4000 | 4480 | 19.7 | 15.8 | 22 |
| 5000 | 5600 | 21.2 | 17 | 23.6 |
| 6000 | 6720 | 22.6 | 18.1 | 25.1 |
| 7000 | 7840 | 23.8 | 19 | 26.5 |
| 8000 | 8960 | 24.8 | 19.9 | 27.7 |
| 10000 | 11200 | 26.8 | 21.5 | 29.8 |
| 15000 | 16800 | 30.6 | 24.6 | 34.1 |
| 20000 | 22400 | 33.7 | 27 | 37.6 |
Biogas Membrane vs Traditional Steel Gas Holders
For biogas storage projects, many operators are replacing traditional steel gas holders with flexible biogas membrane systems. A double membrane biogas holder offers better corrosion resistance, lower maintenance requirements, and easier installation, making it a more practical choice for agricultural, municipal, and industrial biogas plants.
| Feature | Biogas Double Membrane | Traditional Steel Gas Holder |
|---|---|---|
| Corrosion Resistance | Excellent resistance to moisture and H₂S | Prone to rust and corrosion |
| Installation Time | Fast and simple installation | Longer construction period |
| Maintenance Cost | Low maintenance requirements | Higher maintenance costs |
| Weight and Structure | Lightweight flexible structure | Heavy steel structure |
| Pressure Stability | Stable pressure through air control system | Depends on mechanical structure |
| Weather Resistance | Strong UV and weather resistance | Requires additional surface protection |
| Service Life | Long lifespan with proper maintenance | May shorten in corrosive environments |
| Suitable Applications | Agricultural, WWTP, industrial biogas plants | Mainly large fixed installations |
Common Applications of Biogas Double Membranes
Agricultural Biogas Storage Systems
A biogas double membrane is widely used in agricultural biogas plants that process manure, crop residues, and organic waste. It provides flexible biogas storage for farms where gas production can change with feedstock type, season, and daily operating conditions.
Membrane Biogas Holder for Wastewater Treatment Plants
Municipal wastewater treatment facilities often use a double membrane biogas holder to store biogas produced during sludge digestion. The biogas membrane system helps maintain stable gas supply for boilers, CHP units, or other energy recovery equipment.
Industrial Applications of Biogas Membrane Systems
Food processing, brewing, paper, and other industrial facilities can use a biogas membrane system to store gas generated from high-strength organic wastewater. This helps turn waste treatment into a more efficient energy recovery process.
Biogas Membrane for Landfill Gas Projects
In landfill gas collection projects, biogas storage is important for balancing gas flow before utilization or treatment. A flexible biogas membrane system can help manage gas volume changes and support more stable downstream operation.
Why Choose Biowatt-Biogas as Your Biogas Membrane Manufacturer
Integrated Biogas System Experience
Biowatt-Biogas provides complete solutions for anaerobic digestion, biogas storage, biogas upgrading and power generation. Instead of supplying a single product, the company supports customers with integrated biogas system design. This broader engineering experience helps ensure that every double membrane biogas holder works reliably within the entire biogas process.
Reliable Double Membrane Gas Holder Design
Biowatt-Biogas designs biogas double membrane systems for stable pressure control, flexible gas capacity, and long-term outdoor operation. Each system typically includes an inner membrane, outer membrane, pressure control cabinet, and safety protection components to support safe and efficient operation. The flexible biogas membrane structure also helps reduce maintenance compared with traditional steel gas holders.
Certified Manufacturing and Quality Standards
When evaluating biogas membrane manufacturers, certifications are an important indicator of product quality and manufacturing reliability. Biowatt-Biogas holds multiple international certifications related to quality management, product compliance, and material testing, including ISO 9001 quality management certification, CE compliance verification, and third-party product testing reports from SGS.
Extensive Biogas Industry Experience
With years of experience in the biogas and renewable energy industry, Biowatt-Biogas has worked with a wide range of feedstocks and project types. The company supports customers across agricultural waste treatment, wastewater treatment, organic waste recycling, and industrial biogas applications. This practical industry experience helps customers build more stable and efficient biogas storage system.
FAQ About Biogas Membrane
What is a biogas membrane used for?
A biogas membrane is used to store and protect biogas produced by anaerobic digestion. In storage applications, it helps keep gas volume stable, reduce leakage risk, and support safe gas use in biogas plants.
How does a double membrane biogas holder work?
A double membrane biogas holder uses an inner membrane to store biogas and an outer membrane to maintain shape and pressure. The air control system keeps the outer layer inflated, helping the holder deliver gas at a stable pressure.
What is the difference between a biogas double membrane and a single membrane system?
A biogas double membrane system has two layers, which gives better pressure control, weather protection, and operational stability. A single membrane system is simpler, but it may offer less protection in demanding outdoor conditions.
What materials are commonly used for biogas membranes?
Most biogas membrane systems use high-strength coated fabrics designed for gas tightness, UV resistance, and corrosion resistance. The exact material depends on the project size, climate, pressure requirements, and service life expectations.
How long does a double membrane biogas holder last?
The service life of a double membrane biogas holder depends on membrane quality, local weather, gas composition, and maintenance. With proper design and regular inspection, a high-quality system can support long-term biogas storage operation.
Where are biogas double membrane systems commonly used?
Biogas double membrane systems are commonly used in agricultural digesters, wastewater treatment plants, landfill gas projects, and industrial organic waste treatment facilities. They are suitable for projects that need flexible, safe, and efficient gas storage.
Choose the most suitable solution for you
Whether you are interested in leveraging our technology for your project, seeking a career with us, or require further information for any other reason, we are here to empower your sustainability goals.
Which solution do you want to know about?
Product Information
Quantity
Unit
Piece
Support order samples, customization, wholesale direct, and complete payment. If the product you look for does not have corresponding customized content, pls fill out the form below to contact us, and we will reply ASAP.
