Leading Biogas Solution Provider with USR Process for Palm Oil Mill Effluent Treatment
The Asia-Pacific region, particularly China, has become the world's largest industrial wastewater treatment market, with the operation and maintenance service segment's contribution continuing to rise, marking a shift from project construction to long-term operational management. The North American market focuses on upgrading existing facilities, while Europe emphasizes high-value-added resource recovery technologies.
Wastewater from the new energy industry chain (lithium batteries, photovoltaics, hydrogen) has become the most notable emerging growth area due to its complex composition and high treatment difficulty, generating significant demand for customized solutions. The maturity of third-party treatment models in industrial parks continues to improve, driving consolidation in the professional operation market. The Middle East has strong demand for advanced treatment and reuse of industrial wastewater due to water scarcity; manufacturing transfer in Southeast Asia drives local industrial wastewater treatment facility construction demand.
These regional trends underscore a growing global need for reliable, high-performance anaerobic treatment technologies. As a dedicated Biogas Solution Provider, Center Enamel responds to this demand with proven process expertise, beginning with the USR Process.
USR Process Definition and Core Principles
USR, or Upflow Solids Reactor, is an upflow anaerobic process modified for high-suspended-solids, high-solids organic wastewater, specifically designed to solve problems of clogging, sludge washout, and uneven reaction common in traditional anaerobic processes for high-solids wastewater. The process eliminates complex three-phase separators, simplifies internal structure, and relies on upflow hydraulics to promote thorough mixing of solid materials and anaerobic sludge. No strict granular sludge formation conditions are required-flocculent sludge can operate stably. The key feature is high solids tolerance and impurity resistance, with very high influent suspended solids tolerance. It is a dedicated high-efficiency anaerobic process for livestock manure, agricultural organic waste, and high-solids livestock wastewater, specifically developed for agricultural and environmental applications.
This makes the USR Process particularly well-suited to one of the most challenging agro-industrial waste streams in the tropics-palm oil mill effluent, whose complex composition and extreme pollution load demand exactly this kind of robust, clog-resistant anaerobic technology.
Palm Oil Mill Effluent Wastewater Sources
Palm oil mill effluent (POME) originates from the entire processing chain of fresh fruit bunches (FFB) in palm oil milling-the highest pollution load and largest volume high-concentration organic industrial wastewater in tropical agricultural processing. Palm oil mills typically process 30-120 tons of FFB daily, generating approximately 0.5-1.0 m³ of wastewater per ton of FFB processed-single mills discharging hundreds to thousands of cubic meters daily, representing a core environmental challenge for the palm oil industry. Wastewater comes from three main sources:
- Sterilization: FFB enter sterilization vessels for high-temperature steaming to deactivate lipase and prevent free fatty acid increase-producing sterilization condensate, the largest volume source at 80-90°C rich in soluble sugars, amino acids, organic acids, COD 15,000-30,000 mg/L;
- Clarification: Pressed crude oil undergoes centrifugal separation and gravity settling to remove water and impurities-producing large volumes of oily wastewater with extremely high oil content and suspended solids, COD 50,000-80,000 mg/L, the highest organic load source;
- Kernel recovery: Palm kernels are separated by hydrocyclones and washed for recovery-producing sandy wash water with high suspended solids but relatively lower organic concentration. Auxiliary discharges include CIP cleaning, floor wash, boiler blowdown, and cooling tower water. POME is acidic (pH 4.0-5.0), high-temperature (60-80°C), brown colloidal, rich in oils, suspended solids, colloidal proteins, and soluble sugars-a typical high-concentration, high-oil, high-suspended-solids organic industrial wastewater.
Effectively treating POME requires a Biogas Solution Provider with proven engineering capability across diverse project types. Center Enamel's successful delivery of a wide range of wastewater projects-including municipal applications-demonstrates this versatility.
Ghana Municipal Domestic Wastewater Treatment Project
Completed installation in 2021, treating 1,800 m³/day of municipal wastewater using UBF anaerobic + A²/O nitrogen/phosphorus removal mature processes. Equipped with multiple Center Enamel GFS tanks including 1 UBF anaerobic reactor, 1 secondary clarifier, and 2 internal/external double-layer A²/O biological tanks. Influent has high COD, BOD, suspended solids, and nitrogen/phosphorus concentrations-after full treatment, effluent parameters are significantly reduced with pH stable at 6.5-9.0, fully meeting local environmental discharge standards. Corrosion-resistant, conveniently assembled GFS tanks efficiently solve urban domestic wastewater pollution while balancing treatment effectiveness and O&M economics-a mature municipal wastewater case in Africa.
Behind every successful project-whether municipal or agro-industrial-lies decades of accumulated engineering expertise. Center Enamel's long development history as a Biogas Solution Provider explains how this depth of capability was built.
Center Enamel Development History
Center Enamel has been deeply engaged in the environmental bolted storage equipment field for over 30 years. Starting with proprietary enamel anti-corrosion material technology, the company has gradually completed the full-industry-chain upgrade from a single tank manufacturer to a comprehensive environmental EPC service provider. Throughout its 30+ year history, the company has been recognized as a National High-Tech Enterprise, National Specialized and Sophisticated "Little Giant," Manufacturing Single Champion, and Provincial Green Factory. It has successfully delivered over 30,000 environmental projects globally, establishing itself as a leading enterprise in the global GFS tank storage industry. The company has fully integrated the entire chain from enamel frit R&D, intelligent environmental equipment manufacturing, to EPC project contracting-every business breakthrough has been achieved through proprietary core anti-corrosion technology.
This long track record of innovation is rooted in continuous investment in materials science-the foundation on which every USR Process reactor and Palm Oil Mill Effluent Treatment system is built.
Center Enamel Innovative Material Technology
Center Enamel has independently developed over 200 anti-corrosion enamel formulations, with proprietary double-sided double-layer enameling technology-GFS tank anti-corrosion service life exceeds 30 years-far surpassing concrete and ordinary equipment-suitable for global high-corrosion wastewater and biogas fermentation conditions.
Superior tank materials must be matched with equally reliable roof systems to fully contain biogas and control odors. Center Enamel's Aluminum Geodesic Dome Roof provides this complementary sealing performance.
Aluminum Geodesic Dome Roof Solution
Aluminum Geodesic Dome Roof independently developed by Center Enamel is manufactured using high-strength aluminum alloy plates through integral stamping. It features a triangular grid spherical self-supporting structure, enabling large-span full coverage without internal support columns. Made of aluminum alloy, the roof offers excellent weather resistance and corrosion resistance, capable of long-term protection against acid rain, salt spray, and UV radiation, suitable for various extreme outdoor climate conditions. The structural design complies with international AWWA D108 standards, with aluminum plate thickness, rib cross-sections, and joint connections all verified by finite element stress analysis, ensuring wind and snow load resistance that meets building code requirements across different global regions.
The weight of the Aluminum Geodesic Dome Roof is only one-third to one-half of a steel roof with the same span, significantly reducing the load on the tank top and allowing direct installation without tank wall reinforcement. The roof provides superior overall sealing performance, with double sealing between panels using specialized sealant strips and mechanical interlocking, enabling both airtight gas storage and enclosed odor control, suitable for biogas collection and storage, wastewater tank odor control, and drinking water contamination prevention. The support-column-free design does not interfere with the installation and operation of internal equipment such as mixers and water distributors. The aluminum material does not support microbial growth, requiring no anti-corrosion maintenance over long-term use, resulting in low total life-cycle costs.
Frequently Asked Questions
Q1: Why choose Center Enamel as a Biogas Solution Provider for POME projects?
A: With 30+ years experience and 30,000+ global projects, we deliver complete USR Process systems for Palm Oil Mill Effluent Treatment-from enamel R&D to EPC contracting-ensuring reliable biogas recovery and discharge compliance.
Q2: What makes the USR Process ideal for Palm Oil Mill Effluent Treatment?
A: The USR Process tolerates high suspended solids, oil, and impurities without clogging. Its simple structure and flocculent sludge operation ensure fast start-up, low maintenance, and stable COD removal of 80-90%.
Q3: How durable are Center Enamel's GFS tanks for biogas projects?
A: Our GFS tanks use 200+ proprietary enamel formulations with double-sided double-layer enameling, exceeding 30-year anti-corrosion service life-ideal for high-corrosion biogas fermentation and wastewater conditions.