In modern industrial and environmental infrastructure, effective containment is critical. Whether for odor control, contamination prevention, or biogas collection, the Single Membrane Roof is a versatile, cost-effective solution. Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) is a globally recognized expert in the design and manufacture of high-performance membrane covers, backed by over 30 years of engineering excellence.
Engineering data for Biogas, Wastewater, and Industrial Liquid Containment.
Feature | Single Membrane Roof | Double Membrane Roof | Aluminum Geodesic Dome |
Primary Application | Odor Control / Static Storage | Variable Gas Holder (Digesters) | Potable Water / Heavy Snow |
Internal Pressure | Low (< 5.0 mbar) | Constant/Variable Pressure | High Structural Load Capacity |
Material Build | PVC/PVDF Coated Polyester | Dual-Layer with Blower | High-Strength Aluminum Alloy |
Chemical Resistance | High (H₂S & UV Resistant) | High (H₂S & UV Resistant) | High (Atmospheric Corrosion) |
Installation Time | 1 – 3 Days | 3 – 5 Days | 7 – 14 Days |
Airtightness | High (Static Seal) | Excellent (Dynamic Seal) | Low (Requires Sealing Kit) |
Relative Cost | Most Cost-Effective | Moderate | High |
The rapid expansion of the global bio-economy has increased the demand for specialized containment. Whether managing UCO (Used Cooking Oil) & Biogas feedstock or municipal sludge, a reliable cover is essential for process stability.
Storing organic waste in Anaerobic Digestion facilities creates a highly corrosive internal atmosphere.
● H₂S (Hydrogen Sulfide) Protection: A major concern for wastewater engineers is the corrosive effect of H₂S on structural components. Our membranes are chemically inert to H₂S, preventing embrittlement or leakage over time.
● UV Stability: Our roofs feature high-grade PVDF (Polyvinylidene Fluoride) lacquering that reflects solar radiation, maintaining structural integrity for over 15 years in high-UV environments.
Our single membrane solutions provide a static, airtight seal that prevents the escape of Volatile Organic Compounds (VOCs) and noxious odors. This is crucial for environmental compliance in urban and industrial zones, improving air quality and community relations.
Center Enamel’s tank and cover systems are engineered to international benchmarks:
● AWWA D103-09 & ISO 28765: While the tanks are built to AWWA D103-09, our membrane roofs are designed to integrate perfectly with the tank’s top-ring tension, ensuring the entire system meets ISO 28765 standards for bolted steel tanks.
● Structural Safety: Every cover is calculated for specific wind and snow loads, ensuring the membrane remains taut under extreme weather conditions.
Center Enamel’s single membrane solutions are deployed worldwide, providing high-integrity containment for complex waste environments.
● Malaysia POME Biogas Project (5,000 m³): Achieved 99% methane containment in high-humidity tropical conditions using UV-stabilized PVC/PVDF membranes.
● Thailand Urban WWTP Project (3,200 m³): Reduced H₂S odor emissions by 98%, installed in just 5 days per tank to minimize community disruption.
● Singapore Biogas Project (3,458 m³): High-performance gas management in a demanding tropical urban environment.
● Sweden Biogas Project (5,510 m³): Showcasing expertise in advanced European biogas markets with extreme temperature resilience.
Q: How long does a single membrane tank cover last?
A: With high-quality PVC/PVDF-coated polyester, our covers have a service life exceeding 15 years. Longevity is driven by our specialized PVDF outer lacquer, which acts as a shield against solar degradation and H₂S resistance, preventing the fabric from becoming brittle.
Q: How does the modular design benefit installation?
A: As a modular solution, these covers integrate seamlessly with bolted steel tanks. The lightweight material allows for installation in 24–72 hours, significantly reducing on-site labor costs and production downtime compared to rigid covers.
Q: Are these covers compatible with Anaerobic Digestion?
A: Yes. They are essential for modern Anaerobic Digestion plants where odor control and low-pressure gas collection are priorities. They protect stored media from rainwater dilution, ensuring higher efficiency in downstream energy production.
