Biogas Cover Membrane Manufacturer & Global Supplier
DERFLEX is a professional biogas cover membrane manufacturer specializing in high-strength, gas-tight PVC membrane solutions for biogas plants, anaerobic digesters, wastewater treatment facilities and renewable energy projects.
Our biogas cover membranes are engineered to provide long-term gas sealing, chemical resistance and weather durability, ensuring safe and efficient biogas collection and storage under demanding operational environments.
What Is a Biogas Cover Membrane?
A biogas cover membrane is a flexible, gas-tight membrane system designed to seal and cover anaerobic digesters, biogas tanks or lagoons where organic waste is decomposed to produce biogas. The membrane plays a critical role in capturing methane-rich gas, preventing leakage, controlling odors and protecting the digestion process from external weather conditions.
DERFLEX biogas membranes are manufactured using high-tenacity polyester base fabric coated with specially formulated PVC compounds, delivering excellent tensile strength, elasticity, gas impermeability and resistance to aggressive biogas components such as hydrogen sulfide (H₂S) and ammonia.
Applications of Biogas Cover Membrane
- Anaerobic digester gas sealing systems
- Agricultural biogas plants and farm digesters
- Municipal wastewater treatment biogas tanks
- Industrial organic waste fermentation systems
- Biogas gas holders and double membrane roofs
- Slurry lagoons and digestate storage covers
- Renewable energy and circular economy projects
Why Choose DERFLEX Biogas Cover Membrane?
1. Gas-Tight & Safety-Oriented Design
DERFLEX biogas membranes are designed with low gas permeability to ensure maximum methane retention, improved energy efficiency and operational safety. Our membranes help minimize gas loss while reducing environmental impact.
2. Engineered for Harsh Chemical Environments
Biogas systems contain corrosive gases and condensates. Our PVC formulations provide excellent resistance to H₂S, organic acids, moisture and UV radiation, ensuring long-term stability and performance.
3. Structural Strength & Flexibility
High-strength polyester reinforcement allows the membrane to withstand internal gas pressure, wind loads and snow loads while maintaining flexibility and fatigue resistance over years of operation.
4. Factory Direct Manufacturing
As a vertically integrated manufacturer, DERFLEX controls every step from base fabric selection to PVC coating and final membrane fabrication, ensuring consistent quality and competitive pricing for global customers.
Biogas Cover Membrane Technical Specifications
| Item | Specification |
|---|---|
| Base Fabric | High-tenacity polyester |
| Coating Material | PVC with gas-tight formulation |
| Weight Range | 900gsm – 1500gsm |
| Tensile Strength | ≥ 4000 N / 5cm |
| Gas Permeability | Extremely low (biogas optimized) |
| Temperature Resistance | -30°C to +70°C |
| UV Resistance | UV stabilized for outdoor exposure |
| Flame Retardancy | Optional (DIN 4102 B1 / NFPA 701) |
Single & Double Membrane Biogas Systems
Single Membrane Covers
Single membrane systems are commonly used for smaller digesters or lagoons. DERFLEX membranes provide reliable gas sealing while offering cost-effective installation and maintenance.
Double Membrane Gas Holder Roofs
For large-scale biogas plants, double membrane systems are widely adopted. The inner membrane stores biogas while the outer membrane provides weather protection and structural stability.
Manufacturing Process & Quality Control
DERFLEX biogas membranes are produced under strict quality management systems. Each production batch undergoes comprehensive testing including tensile strength, tear resistance, adhesion, gas permeability and accelerated aging simulation.
Our manufacturing facilities are equipped with advanced coating lines and inspection equipment to ensure long-term reliability in energy and environmental applications.
Global Biogas Project Experience
DERFLEX biogas cover membranes have been supplied to renewable energy and environmental projects across Europe, North America, South America, Asia and the Middle East.
- Agricultural biogas plants
- Municipal wastewater treatment facilities
- Industrial waste recycling projects
- Government-supported green energy programs
OEM & Custom Biogas Membrane Solutions
DERFLEX provides OEM services for engineering companies and system integrators, including customized membrane thickness, color, surface treatment, welding compatibility and project-specific technical support.
Frequently Asked Questions (FAQ)
How long does a biogas cover membrane last?
Under normal operating conditions, DERFLEX biogas membranes typically provide a service life of 8–15 years depending on system design and environmental exposure.
Can DERFLEX supply membranes for large biogas plants?
Yes. We support large-scale industrial and municipal biogas projects with customized membrane solutions and stable bulk supply.
Is your biogas membrane suitable for outdoor installation?
Yes. All DERFLEX biogas membranes are UV-stabilized and designed for continuous outdoor exposure.
Contact DERFLEX – Biogas Cover Membrane Supplier
If you are looking for a reliable biogas cover membrane manufacturer, DERFLEX offers professional technical solutions, factory-direct pricing and global delivery.
Website: https://www.derflex.com