The management of agricultural waste, particularly poultry manure, presents a significant environmental challenge and a tremendous energy opportunity. For modern facilities, the solution lies in specialized anaerobic digestion. Poultry Waste Biogas Plants are designed to efficiently convert high-strength poultry waste into renewable energy (biogas) and nutrient-rich fertilizer (digestate). The success and profitability of these operations are highly dependent on the reactor technology employed. The Double-membrane digester, an integrated solution that combines the reactor vessel with a sealed gas holder, stands out as the optimal containment system for the unique demands of poultry waste.
As a dedicated China Double-membrane digester Manufacturer, Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) is a global leader in supplying these advanced, integrated systems for the waste-to-energy sector. We specialize in engineering the complete anaerobic digestion unit, which includes a highly corrosion-resistant bolted steel tank and the high-performance double-membrane cover. Our solutions are specifically tailored to maximize gas yield and ensure stable operation for Poultry Waste Biogas Plants worldwide.
With a history spanning over three decades, Center Enamel’s reputation as a premier China Double-membrane digester Manufacturer is founded on a commitment to robust engineering and materials science. We understand the specific challenges posed by poultry waste, including its high nitrogen content and potential for foaming. Our Double-membrane digester systems are meticulously designed to provide superior airtightness, essential thermal regulation, and structural integrity, ensuring peak performance, minimal maintenance, and long-term durability in the demanding environment of Poultry Waste Biogas Plants.
The integrated Double-membrane digester system provides two essential functions in a single unit: acting as the primary anaerobic reactor and offering flexible, secure biogas storage. This integration is crucial for the efficient and safe operation of Poultry Waste Biogas Plants. The system typically comprises two core elements:
The Tank Structure (The Reactor): Center Enamel primarily uses its renowned Glass-Fused-to-Steel (GFS) bolted tank technology. GFS tanks offer exceptional resistance to the corrosive environment created by poultry manure and its high concentration of volatile fatty acids. This robust tank forms the foundation of the digester, providing a stable, durable, and leak-proof vessel.
The Double-membrane Cover (Integrated Gas Storage): This specialized fabric cover seals the tank and performs the vital role of managing the produced gas.
The design mechanics of the cover are key to its efficiency in managing biogas produced from poultry waste:
Inner Membrane (Gas Containment): Constructed from a high-tensile, gas-tight membrane material, this layer expands and contracts dynamically based on the volume of biogas being produced. Its primary role is to provide secure, low-pressure containment, preventing the escape of valuable methane and containing odors associated with poultry waste.
Outer Membrane (Protection and Structure): This external layer is continuously inflated with air by a blower system to maintain a constant, slight positive pressure. This pressure provides the dome shape and structural support, protecting the inner gas-holding membrane from external elements, including strong winds, heavy snow loads, and UV radiation, ensuring the system's longevity.
Thermal Regulation: The pressurized air cushion between the two membranes acts as an effective insulator. This thermal barrier is particularly beneficial in Poultry Waste Biogas Plants as it helps maintain a stable, warm temperature within the digester, optimizing the activity of the mesophilic or thermophilic bacteria necessary for efficient manure degradation and consistent biogas production.
For facilities processing high-strength poultry waste, choosing Center Enamel as your China Double-membrane digester Manufacturer yields specific technical and economic advantages:
Effective Odor Control: The high-strength nature of poultry manure makes odor control a paramount concern. The fully sealed, double-membrane system provides superior airtightness, effectively containing volatile organic compounds and hydrogen sulphide within the reactor, thereby minimizing odor nuisance to surrounding communities—a major regulatory benefit for Poultry Waste Biogas Plants.
Optimal Gas Yield: By maintaining a stable temperature through the insulated cover and ensuring an airtight seal, the Double-membrane digester maximizes the conversion of poultry waste volatile solids into methane, directly boosting the plant’s energy output and revenue potential.
High Corrosion Resistance: The combination of the chemically inert GFS tank walls and the specially coated membrane fabrics provides exceptional resistance to the corrosive gases and aggressive slurry conditions typical in poultry manure digestion, guaranteeing a long operational life.
Reduced Capital Costs: By integrating the gas storage function into the digester roof, the system eliminates the need for a separate, rigid gasholder. This significantly reduces civil construction work, land requirements, and the overall capital investment for Poultry Waste Biogas Plants.
Pressure Management Safety: Operating at low, controlled pressure, the double membrane design is inherently safer than high-pressure containment options. It effectively manages the variable gas production rate of the digester, accommodating fluctuations without risk of over-pressurization or vacuum.
As a leading China Double-membrane digester Manufacturer, our commitment extends to providing a fully integrated digestion package. Our expertise in manufacturing both the bolted steel tank structures (GFS, FBE, and Stainless Steel) and the specialized membrane covers allows us to offer a unique, single-source solution. This capability ensures perfect structural and chemical compatibility between the tank and the Double-membrane digester cover, simplifying procurement and guaranteeing optimal performance for Poultry Waste Biogas Plants.
Our support encompasses the entire project lifecycle:
Integrated Engineering and Design: We provide detailed design specifications and construction drawings, ensuring the digester structure and membrane cover are perfectly sized and engineered for the specific volume and processing requirements of poultry waste.
Precision Manufacturing: Utilizing advanced fabrication techniques, including CNC cutting and automatic welding for the GFS tank plates and precision textile fabrication for the membranes, we guarantee the highest quality and fastest lead times.
Quality Assurance: All materials and components are subject to rigorous quality control checks, adhering to international standards such as ISO 9001, ensuring a durable and reliable end product suitable for long-term use in Poultry Waste Biogas Plants.
Global Service and Support: We provide comprehensive installation manuals and can dispatch experienced site supervisors to assist local crews, guaranteeing the correct and rapid deployment of the integrated Double-membrane digester system worldwide.
Our proven experience as a China Double-membrane digester Manufacturer is validated by successful implementations in large-scale biogas projects, which require the same robust containment infrastructure necessary for managing poultry waste. These non-fictitious examples illustrate our capacity to deliver high-volume, reliable solutions:
Jiangsu Xuzhou Biogas Project: We supplied the digester and containment solution for this major project, providing 4 units with a substantial total volume of 30,532m³. This demonstrates our ability to construct large-scale digestion infrastructure essential for high-throughput waste management.
Inner Mongolia Hinggan League Bio-Natural Gas Project: For a facility focused on high-value gas recovery, we delivered 4 units with a total capacity of 16,760m³. This highlights our expertise in providing the necessary sealed digester infrastructure for achieving high-purity gas output.
Shandong Heze Biogas Project: We supplied the digestion containment for this regional facility, involving 2 units with a total volume of 15,266m³. This case showcases our capacity to support substantial industrial-scale Biogas Plants that require integrated digester-storage units.
Sweden Biogas Project: Reflecting our ability to meet stringent international standards, we supplied 1 unit with a capacity of 5,510m³ for a high-performance biogas facility in Sweden. This project affirms the global compliance and reliability of our Double-membrane digester systems.
For operators and developers of Poultry Waste Biogas Plants, the selection of the correct digester technology is a defining decision. The integrated Double-membrane digester offers the optimal combination of robust reactor structure and flexible gas storage, ensuring superior odor control, maximum gas capture, and the highest operational safety. As a leading China Double-membrane digester Manufacturer, Center Enamel is dedicated to providing these meticulously engineered, high-quality solutions, empowering the poultry industry to transform environmental liabilities into sustainable energy assets.