Schnell Komposter S-500: 500 kg/day In-Vessel Industrial Composting Machine
The Schnell Komposter S-500 processes up to 500 kilograms of food waste per day, converting all categories of catering food waste into nutrient-rich compost within 24 hours through an enclosed, odour-free in-vessel aerobic composting process. The full Schnell Komposter commercial composting machine range is manufactured and installed across the UK and Europe by 3R Urban Solutions UK.
At 500 kg per day, the S-500 processes 15,000 kg — 15 tonnes per month on-site — eliminating the need for a food waste collection contract for that volume, removing landfill tax exposure, and producing usable compost as the output. All food waste stays on your premises and is transformed into a resource rather than disposed of as a liability.
S-500 Industrial Composting Machine Technical Specifications
☞ Processing Capacity of the large scale food composting machine
500 kg of food waste per day
☞ Monthly Throughput of the large scale composting systems UK
15,000 kg — 15 tonnes per month
☞ Processing Cycle
24 hours from input to finished compost — continuous daily operation
☞ Composting Process
In-vessel aerobic composting: enclosed, sealed, odour-controlled, pest-proof
☞ Internal Operating Temperature
60–70°C — pathogen and weed-seed elimination; compliant with Animal By-Products Regulation (ABP) standards for catering waste
☞ Volume Reduction
Up to 90% reduction in food waste volume; dry, friable compost output
☞ Power Supply
415V 50Hz three-phase (standard UK commercial supply); estimated draw approximately 7–10 kW
☞ Installation Requirements of the large scale food composting machine
Requires covered or semi-covered external or service area. Full site survey, installation and commissioning by 3R Urban Solutions UK engineers included with every supply.
☞ Maintenance of the large scale food composting machine
Low-maintenance design; daily operation manageable by existing site staff following 3R Urban Solutions UK training. Scheduled filter and mechanical service by 3R Urban Solutions UK technicians.
☞ Certification
CE marked; compliant with European and UK machinery safety directives. Meets UK Environmental Permitting requirements for on-site composting of catering waste.
☞ Output
Nutrient-rich compost, approximately 1,500 to 2,000 kg per month at 500 kg/day throughput. Safe for direct use on grounds, gardens and landscaping.
Accepted Inputs: What the S-500 Industrial Composting Machine Processes
The S-500 Industrial Composting Machine accepts the full range of commercial catering food waste. All cooked food of any type, raw food preparation waste including vegetable peelings and fruit trimmings, meat and poultry including cooked bones, fish and shellfish, dairy products, bread, pastry and baked goods, coffee grounds, tea bags, eggshells, and mixed plate waste are accepted without pre-sorting or pre-treatment.
The 60–70°C internal operating temperature ensures complete pathogen elimination in every cycle, producing a safe, stable compost output that meets ABP Regulation standards for catering waste composting. Packaging materials, large structural bones, excessive liquids and non-food items should not be loaded into the machine — 3R Urban Solutions UK provides a complete accepted and excluded materials guide at installation.
For a full technical explanation of the in-vessel aerobic composting process, how the microbiology works and what the compost output contains, see our guide: In-Vessel Aerobic Composting Explained.
Which Operations the S-500 Industrial Composting Machine Serves
The S-500 is an industrial-scale solution for high-volume food waste producers: large hotel and resort groups, NHS acute hospitals and large Trust catering operations, university catering facilities with multiple refectories, large council food waste hubs serving multiple municipal sites, and large corporate catering contracts.
The S-500 Industrial Composting Machine is one of eleven capacity configurations in the Schnell Komposter range, covering 25 kg/day to 2,000 kg/day. The right model for your business is determined by your actual average daily food waste volume. 3R Urban Solutions UK recommends sizing for your peak days rather than your average — a machine that cannot handle peak volumes creates exactly the compliance and operational problem you are trying to solve.
Read how the Schnell Komposter Industrial Composting Machine range serves specific sectors:
- Large hotels and resort groups
- NHS acute hospitals
- Universities and further education
- Local councils and public hubs
The 24-Hour In-Vessel Composting Cycle Explained
Food waste from your kitchen or catering operation is collected in designated containers and loaded into the S-500 large scale food composting machine input chamber — typically once or twice per operational day. Once the chamber is loaded and sealed, the machine’s managed aeration system maintains the controlled oxygen environment that aerobic composting requires.
As naturally occurring microorganisms begin breaking down the organic material, exothermic biological activity raises the internal vessel temperature to between 60 and 70 degrees Celsius. This temperature range simultaneously accelerates the composting process to completion within 24 hours, eliminates pathogens and harmful bacteria, destroys weed seeds, and drives moisture from the waste — producing a dry, friable compost rather than wet digestate.
At the end of the 24-hour cycle, finished compost is extracted from the output chamber. The S-500 Industrial Composting Machine is immediately ready for the next loading cycle. Operation is continuous — there is no batch rest period, no downtime between cycles, and no interruption to normal kitchen workflow. The entire process takes place within the sealed vessel with no odour emission and no noise nuisance, making the machine appropriate for installation in locations near occupied buildings or customer-facing areas.
The volume reduction achieved is typically around 90%. This means 500 kg of food waste input produces approximately 50 kg of finished compost output per day — a dramatic reduction in waste volume that simultaneously creates a useful material rather than a disposal problem.
Regulatory Compliance: Simpler Recycling 2025 and Environmental Permitting
The S-500 Industrial Composting Machine fully satisfies the food waste separation and management requirements of the Simpler Recycling regulations that came into force across England on 31 March 2025. Food waste is separated at source, loaded into the machine, and processed entirely on your premises. It does not enter the external waste stream as food waste at any point, and no separate food waste collection contract is required for the volumes the S-500 large scale food composting machine handles.
On-site composting of catering waste is regulated under the Environmental Permitting (England and Wales) Regulations 2016. For most commercial volumes processed by the S-500, a T23 registered exemption is the appropriate route — this is a registration rather than a full permit application, and 3R Urban Solutions UK guides every customer through the process as part of the installation service at no additional charge.
For detailed guidance on the legal framework your business must navigate, see our comprehensive articles on
Financial Analysis: What the S-500 Saves Your Business
At 500 kg per day — 15,000 kg — 15 tonnes per month — your business is currently paying for food waste collection at UK commercial rates of £80 to £150 per tonne, plus the landfill tax standard rate of £126.15 per tonne (2025-26) passed through in contractor pricing. The annual cost of managing this volume through a collection-based route is approximately £25,000 to £50,000 per year, and rises with every future landfill tax increase.
The S-500 Industrial Composting Machine eliminates these ongoing costs. The compost output — approximately 1,500 to 2,000 kg per month — has direct value for businesses with grounds, gardens or landscaping requirements. It can replace purchased growing media and soil conditioners, or be donated to local community projects. Use our free Commercial Composting ROI Calculator to calculate the specific payback timeline for your operation.
3R Urban Solutions UK Installation and Support
Every Schnell Komposter S-500 Industrial Composting Machine manufactured and installed by 3R Urban Solutions UK includes a full site survey to confirm installation requirements, delivery and installation by qualified 3R Urban Solutions UK engineers, commissioning and performance verification, full staff training on machine operation and maintenance, guidance through the T23 environmental exemption registration process, and ongoing technical support and scheduled maintenance.
3R Urban Solutions UK is one of the world’s leading manufacturer of the Schnell Komposter range and installs these machines across UK and Europe. Learn more about 3R Urban Solutions UK and the Schnell Komposter Commercial Composting Machine Models.
