End-to-End Solutions: How Our Food Waste to Energy Plant Works
Biowatt-biogas® responds to the challenges of climate change, promotes the realization of a circular economy, contributes to building a sustainable future, and strives to find a balance between environmental protection and economic growth.
Food Waste & Kitchen Waste Digesters
Turn Food Waste to Energy with Anaerobic Digestion Plants
Municipal organic waste includes food waste, kitchen waste, household waste, agricultural residues, and organic sewage sludge.
For all types of organic waste, BIOWATT-BIOGAS can provide the proprietary pre-treatment system and high-solid CSTR biochemical anaerobic process designed for safe disposal, maximum volume reduction, and optimal resource recovery.
- For food waste and kitchen waste: Our High-Solid CSTR delivers maximum biogas production.
- For high-volume sludge: Our UASB systems are the industry standard.
Either way, you get zero waste, clean energy, and a circular economy win.
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End-to-End Solutions: How Our Food Waste to Energy Plant Works
Real-world municipal kitchen waste is complex—containing water, fats, oils, sand, and solid organics. Our fully integrated food waste bio digester system doesn't just generate gas; it maximizes resource recovery at every step. Explore our complete anaerobic digestion of food waste process below, designed for zero waste and maximum profitability.
From complex kitchen waste to profitable clean energy. Here is our complete food waste bio digester process, designed for zero waste and maximum ROI:
- 1. Smart Pre-treatment: We automatically extract valuable oils (for Bio-diesel) and remove grit/sand to protect the downstream system.
- 2. High-Yield Anaerobic Digestion: Our advanced two-stage tanks maximize biogas production from food waste.
- 3. Biogas Upgrading: Raw gas is purified and converted into Power, Heat (CHP), or vehicle-grade CNG.
- 4. Digestate Recycling: Leftover organics are dewatered into premium solid and liquid fertilizers.
💡 The Result? Multiple Revenue Streams: Turn your food waste to biogas, Bio-diesel, Electricity, and Fertilizer—all in one fully integrated system.
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Layout of Our Food Waste to Energy Plant
Our engineering philosophy centers on maximizing biogas production from food waste while minimizing spatial requirements. The standard layout of our food waste bio digester plant showcases a highly integrated, modular design tailored for municipal and industrial applications.
- Compact & Space-Saving Design: Engineered within an optimized footprint (approx. 83m × 58m), our system is ideal for facilities with limited land availability, without compromising on processing capacity.
- Streamlined Process Flow: The logical zoning—from organic waste pre-treatment to the core anaerobic digestion phase, and finally to biomethane storage—ensures operational safety, easy maintenance, and high automation.
- Modular Scalability: Designed with the future in mind. The integrated equipment skids and tank arrangements allow for seamless capacity expansion as your food waste to biogas project grows.
Proven Project Performance
Global benchmarks in industrial and municipal biogas
Municipal Food Waste to Energy Plant Benchmark
200t/d Kitchen Waste Biogas Power Project
200 t/d
Kitchen Waste
28,000
kWh Daily Yield
A pioneering food waste to biogas plant in Hangzhou, China, converting 200 tons of daily kitchen waste into clean energy. This demonstrates the high efficiency of our high-solid CSTR technology for anaerobic digestion of food waste.
Industrial Mixed Waste & Sludge Benchmark
PepsiCo Songjiang Plant Waste Utilization Project (2023)
10,000+ t/year
Total Organic Waste
4,000 - 8,000 m³
Biogas / Day
A landmark project at PepsiCo's Shanghai Songjiang plant processing 8,500 tons/year of sludge, plus potato peels,cull potatoes, and kitchen waste. Biogas production ramps from 4,000 m³/day (Jan-May) to 8,000 m³/day (Jun-Dec), demonstrating our system's adaptability to seasonal feedstock variations.
Municipal Mega-Project Benchmark
1,600t/d Food Waste Mega Project
8 Tanks
9,200m³ Per Unit
146,880 m³
Total Biogas / Day
A global flagship in urban waste-to-energy. Our low-concentration anaerobic system manages massive volumes of city kitchen waste for sustainable urban recycling.
Your benefits
The Biowatt-biogas® Advantage
Advanced Anaerobic Digestion
CSTR: The industry standard for high-solid feedstocks (like food waste and manure), ensuring complete mixing and stable anaerobic digestion of food wastes for biogas production.
UASB: The optimal choice for high-volume, low-solid industrial wastewater, offering superior efficiency in a compact footprint.
Industrial Gas Purification
Our integrated systems deliver pipeline-quality biomethane (RNG) with >99.6% methane recovery and <0.5% methane slip, maximizing your project's yield and profitability.
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Technology
FAQ
Our answers to your questions
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How does the anaerobic digestion of food waste work for biogas production?
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1. Smart Pre-treatment: Sorting, crushing, and pulping. If the raw materials contain oil, they can also be heated for oil extraction (Bio-diesel).
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2. Anaerobic Fermentation: The organic slurry breaks down inside our high-efficiency digesters to synthesize raw biogas.
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3. Energy Generation (CHP): Generation of electricity and heat by combustion of biogas in the combined heat and power plant.
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4. Biogas Upgrading: Processing of raw biogas into clean biomethane, and possibly further into bio-CNG, bio-LNG, or CO2.
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5. Grid Integration: Direct feeding of purified biomethane into the municipal natural gas grid.
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6. Digestate Recycling: Fermentation residues are dewatered and repurposed as premium organic fertilizers.
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Which waste materials are suitable for generating energy?
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Beyond traditional agricultural slurry and manure, our food waste bio digesters are engineered to process a massive variety of commercial and industrial organic residues. Suitable materials include:
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Food leftovers from restaurants, catering, and commercial kitchens.
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Brewery and distillery waste (e.g., brewer's grains, surplus yeast).
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Confectionery, bakery, and dairy processing residues.
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Vegetable/fruit processing waste and pomace.
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Industrial fats, oils, and greases.
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Can packaged food waste also be recycled?
Yes, but the packaging must be separated first. We offer innovative depackaging technologies that automatically separate organic matter from plastics, tins, and cardboard. The extracted organic paste is safely pumped into the biogas plant, while the clean packaging can be sent for standard recycling. We develop customized depackaging concepts based on your specific waste streams.
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How do you handle contaminants like plastics and glass in kitchen waste?
Our proprietary pre-treatment system includes multi-stage screening, magnetic separation, and heavy material (grit/sand) removal. This ensures that only a pure organic slurry enters the anaerobic digester, protecting your downstream equipment from wear and maximizing your biogas yield. We consistently achieve a >95% contaminant removal rate.
Manufacturing & Quality Assurance
CE Certified Manufacturing
Our key equipment modules are designed and built to meet EU machinery directives.
ISO 9001:2015 Quality Management
Our fabrication, assembly, and testing processes follow international quality assurance protocols.
In-House Fabrication & Integration
We control welding, assembly, and factory acceptance testing (FAT) of digesters, skids, and system integration.
Partnering with Technology Leaders
We integrate core systems from Siemens/Woodward (Power), PAQUES (Desulfurization), and Evonik (Membrane Separation) for maximum reliability.
Request Project Assessment
Submit your project details for a customized ROI and technical framework
Choose the most suitable solution for you
Whether you are interested in leveraging our technology for your project, seeking a career with us, or require further information for any other reason, we are here to empower your sustainability goals.
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