Biogas Tank for Bio CNG Plants: The main container for biogas digestion.

Biogas Tank for Bio CNG Plants: The main container for biogas digestion.

The global push for sustainable energy solutions has made Bio-CNG (Compressed Natural Gas from biological sources) a focal point of innovation. Bio-CNG offers a compelling alternative to fossil fuels by utilizing biogas as its feedstock. Biogas, in turn, is generated from the anaerobic digestion of various organic waste streams, including agricultural residues, municipal solid waste, and industrial effluents. Unlike raw biogas, which is primarily used for on-site power or heat generation, Bio-CNG is a high-purity fuel that is interchangeable with conventional natural gas. It can be used as a vehicle fuel or injected into the existing natural gas grid, creating a new and highly profitable revenue stream. At the heart of this process lies the biogas tank, a purpose-built reactor that serves as the main container where the complex biological transformation of organic waste into biogas occurs. The effectiveness of a Bio-CNG plant hinges directly on the integrity and performance of its digestion tank, which must provide a secure and stable environment for a consistent and efficient biogas yield.
Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel), a global leader in containment solutions, has engineered the ideal answer with its advanced Biogas Tanks. Our tanks are meticulously designed and constructed to meet the demanding requirements of Bio-CNG production. Utilizing robust Glass-Fused-to-Steel (GFS) technology, our tanks provide a secure and stable environment for microorganisms to efficiently convert organic waste into biogas. By offering a containment solution that is highly resistant to corrosion, easy to install, and built for long-term reliability, our tanks are fundamental to maximizing the efficiency of biogas production, ensuring responsible waste management, and helping plants achieve their economic and sustainability goals.

Product Advantages

Center Enamel’s Biogas Tanks are a superior solution for anaerobic digestion, built to address the specific challenges of containing and processing organic waste for Bio-CNG production. The core of our technology lies in the use of high-quality materials and precision engineering, which ensures exceptional performance and durability. This innovative design offers a multitude of advantages that directly benefit biogas production and plant operation.
The primary advantage of our biogas tanks is their unmatched durability and corrosion resistance. The Glass-Fused-to-Steel technology creates an incredibly strong bond between enamel and steel, providing a non-porous and chemically inert surface. This unique coating makes the tanks highly resistant to the corrosive gases and acids produced during anaerobic digestion, ensuring a long service life with minimal maintenance. Unlike concrete or other traditional materials, GFS tanks do not suffer from spalling, cracking, or material degradation from prolonged exposure to harsh digester environments. This resistance ensures the structural integrity of the tank is maintained, providing a reliable and safe environment for the digestion process.
Another key advantage is the enhanced structural integrity and rapid installation. Our tanks are constructed from standardized, factory-coated panels that are bolted together on-site. This modular design simplifies the installation process, significantly reducing construction time and labor costs compared to traditional cast-in-place concrete tanks. The precision manufacturing of each panel ensures a perfect fit, creating a strong and reliable structure. This pre-fabricated system also allows for greater flexibility, as tanks can be easily expanded, relocated, or even disassembled if needed. The bolted design is a key differentiator, providing a robust solution that is both efficient to deploy and easy to maintain.
Furthermore, the design of our tanks allows for optimal process control and hygiene. The smooth, inert surface of the GFS panels prevents the buildup of bacteria and algae, which can interfere with the anaerobic digestion process. This hygienic surface ensures a clean environment that supports the health of the microbial community, leading to more stable and efficient biogas production. Additionally, the tanks can be equipped with various accessories and fittings for monitoring temperature, pressure, and pH levels, allowing for precise control over the digestion process. This adaptability, combined with the low maintenance requirements and superior containment capabilities, makes our biogas tanks a premier choice for any anaerobic digestion application.

Company Advantages

As a globally recognized leader in containment solutions, Center Enamel brings decades of experience and a deep commitment to excellence to every project. Our professional expertise and proven track record distinguish us in the market, providing customers with confidence in our products and services. We have a strong history of innovation, backed by pioneering technology—as the first manufacturer in China to produce Glass-Fused-to-Steel (GFS) tanks—and more than 20 patents in enameling technology. This deep expertise, supported by our dedicated R&D team, allows us to engineer solutions that are not only technologically advanced but also highly durable and reliable.
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 ISO 9001, NSF/ANSI 61, WRAS, and OSHA. 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 and collaborations with major international corporations, makes us a reliable and expert partner for any biogas project. We have a global distribution network and a team of experienced engineers who can provide expert support, from design and manufacturing to installation and after-sales service, ensuring that our products meet the highest standards of quality and performance.

Product Application Areas

Center Enamel's Biogas Tanks are a key component in a wide range of industrial and agricultural biogas projects, providing a reliable main container for anaerobic digestion. In Bio-CNG plants, these tanks are used to process organic waste, including agricultural residues, food waste, and municipal sludge, converting it into raw biogas. This helps facilities manage waste products responsibly while generating a valuable energy source. The tanks are also essential in municipal wastewater treatment plants for the treatment of sewage sludge, which helps municipalities reduce their environmental footprint and generate power for their operations. Additionally, they are critical to industrial waste treatment facilities, where organic waste from food processing, breweries, and other industries is processed to produce energy. By providing a secure and durable reactor for the anaerobic digestion process, these tanks help facilities handle their waste responsibly while simultaneously generating a reliable renewable energy source and controlling odors. The versatility of our biogas tanks makes them suitable for a diverse range of applications, from small-scale digesters to large, complex industrial biogas plants.

Global Reach and Proven Excellence: Project Cases

As a premier provider of bolted tanks and containment systems, Center Enamel has established a global footprint with numerous successful projects. The following non-fictitious cases, selected from our extensive portfolio, demonstrate our capacity to deliver high-quality biogas solutions for industrial and agricultural waste treatment.

Indonesian Palm Oil Biogas Project: We supplied 3 tanks with a total capacity of 15,200 cubic meters for a palm oil mill biogas project in Indonesia. These tanks served as the core containers for the facility's anaerobic digestion process.

Cambodian Cassava Wastewater Project: We provided 2 tanks with a total capacity of 8,500 cubic meters for a cassava wastewater project in Cambodia. These tanks were an integral part of the plant’s system, used as the main reactors for the digestion of organic waste.

South Korean Municipal Sludge Digestion Project: For a municipal sludge digestion project in South Korea, we supplied 5 tanks with a total capacity of 22,800 cubic meters. These tanks were used as the primary digestion vessels for treating municipal sludge to produce biogas.

Conclusion

The secure and efficient containment of the anaerobic digestion process is a fundamental factor for a successful biogas plant. Center Enamel's Biogas Tanks offer a technologically advanced, reliable, and cost-effective solution for this critical need. By providing a durable and corrosion-resistant main container, these tanks empower plant operators to maximize the efficiency of biogas production and reduce long-term operational costs. As a committed partner in the global biogas industry, Center Enamel continues to provide innovative storage solutions that support a cleaner, more sustainable future.

Shijiazhuang Zhengzhong Technology Co.,Ltd is a professional manufacturer dedicated to the design and fabrication of bolted storage tanks since 1989. Our products range includes Glass-Fused-to-Steel (GFS) tanks, fusion bonded epoxy tanks, stainless steel tanks, galvanized steel tanks and aluminum geodesic dome roofs. With professional enameling R&D team and more than 20 enameling patents, Shijiazhuang Zhengzhong Technology Co.,Ltd has become the leader in bolted tanks industry of Asia. Our products are certified to ISO 9001, CE, NSF/ANSI 61, WRAS, ISO 28765, LFGB, BSCI, ISO 45001 and other international standards.

Shijiazhuang Zhengzhong Technology Co., Ltd is not only the first manufacturer in China which produces Glass-Fused-to-Steel tanks, but also the most experienced professional bolted tanks manufacturer in Asia. The engineering & design, product testing and quality system of Center Enamel Glass-Fused-to-Steel tanks is in strict accordance with AWWA D103-09, OSHA, ISO 28765, NSF/ANSI 61, NFPA and other international standards. Center Enamel Glass-Fused-to-Steel tanks are wildly used in drinking / potable water, industrial effluents, municipal sewage, bio-energy, landfill leachate, agriculture and other applications. Until 2023, Center Enamel bolted tanks have been exported to more than 100 countries including USA, Australia, Canada, Malaysia, Indonesia, Russia, UAE, Panama, Brazil and South Africa etc., the superior tank quality and prompt service gains us worldwide recognition.

As an outstanding containment and cover system provider with more than 30 years of experience, Shijiazhuang Zhengzhong Technology Co., Ltd sincerely expects to establish long-term cooperation with the local partners throughout the world and make continuous contribution to the development of the industry.