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Relation Cycle | Production Cycle | Sales Cycle | Partnership | Advantages |
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| Recycling of food waste
VRS – PRO VERDE – a fertilizer which has been introduced in the Swiss Market during 2007. Let us have a look at its analysis: 4.5 – 5.5% N 0.2 – 0.3% NH4-N 1.5 – 2% P205 1.0 – 1.2% K20 1.5 – 2% Ca 0.10 – 0.15% Mg It consists of over 90% of organic material. What has VRS – PRO VERDE, a fertilizer, to do with our today’s session? The VRS – Recycling System turns wet waste into valuables. The raw material is food waste. The fertilizer is produced at the place of origin: at large kitchens. Although they spoil quickly, they also contain valuable nutrients, such as protein, fats, vitamins, minerals and trace elements. From an ecological standpoint, it makes little sense to burn or ferment them. In addition, the constraints on feeding these materials to livestock are being tightened more and more. The VRS System is based on an ecological processing unit installed at the user’s location . The resulting dried resources are retrieved by VRS - Value Recovery System Inc. - free of charge, and are then processed further at several locations before being returned to the consumption cycle as fertilizer.Disposal is becoming increasingly problematic. There are many reasons for this:
The use as feed for livestock is being increasingly limited due to the danger of spreading animal diseases and cannibalism issues, as well as to achieve improvements in the meat quality. The shredding and compacting of food waste overloads the sewage plants with such quantities of fibre and fat that local authorities have now prohibited this kind of processing. The incineration of food waste makes little sense from either an ecological or an ethical viewpoint. The environmental pollution produced by the transportation of wet food wastes with an average water content of 80% can no longer be accepted from an ecological viewpoint.
So what can be done with organic wet products?
Nowadays, the disposal of food- and fish waste mainly takes place in existing central disposal operations such as: Pigswill cookers Biogas systems Composting plants Incineration plants Let us have a look at some negative effects: The danger of disease through "container tourism", transmission of viruses at the points of origin, such as hospitals, clinics, homes for the elderly. Approx. 80% from the point of origin to the processing operation is consisting of water. (food waste contains approx. 80% water). Irresponsible environmental pollution from the water transport, reduction in quality.
There are many advantages in processing on-site:
The state of freshness is guaranteed. No development of unpleasant odours. The refrigeration of food waste is no longer necessary, thereby saving energy. The VRS machine processes the waste – depending on the quantity – up to three times a day. One cycle takes about 6 – 8 hours. The transport costs are reduced considerably. The dry product with a moisture content of approx. 10% is significantly less voluminous. The quantity to be transported is reduced from 100% to about 33% or even less.
Only internal use of containers for food waste. Hygienically flawless operation. The food wastes are crushed in the agitating-cutting mechanism during the drying phase. The final product is sterile and can be used for various purposes. The condensate is cleaned using a special filter system that meets the standard for sewage clarification plants. The cleaned water can then be allowed to flow into the sewage system without any problems. Many customers now use this condensate for watering their plants.
Processing food waste in Switzerland "on site" would not only have an economical but an enormous ecological effect: Annual quantity of waste to be transported is about 225’000 tons Through processing at the point of origin we save about: Transport hours saved per year at 60 km/h 38,333 h Saving of travelled km per year 2,300,000 km Saving in Nox emissions per year 32,085 kg Reduction of SO2 emissions per year 1,886 kg Reduction of CO emissions per year 7,360 kg Reduction of dust per year 460 kg
The heart of the VRS System is the drying plant installed at the point of origin of the food waste. The drying takes place through shredding, water evaporation and sterilisation, and the final product is sterile, free flowing and durable. The energy requirement is about 0.75 kW/h per litre of evaporated water.
The VRS - System solves the constantly increasing problems of disposal that are present in large kitchens or fish filleting plants in a practical and ecological manner: · The customer profits from a clean, emission-free recycling.· The sterile final product can be stored without refrigeration.· The space requirement for storage is considerably lower.· The collection can be organised in an efficient and environmentally friendly manner.· Container tourism is avoided, thereby preventing the risk of bacteria transport, respectively the risk of diseases.· For the end user of the products produced from the wet waste, the VRS System provides the certainty that they are using pure, uncontaminated, natural and high quality products.· The approvals for the use of the VRS systems,· The approval for the sale of the final products as animal feed and· The approval for the sale of the final products as fertilizer by the Swiss authorities can be released on request.· The VRS – PRO VERDE fertilizer is also approved by the Fibl Frick for the usage in BIO cultures.
The presentation and the assessment of the results
Animal feed from food waste The following average values were found:
Utilisation: Raw material for cat and dog food, pig feed.
Fertilizer from fish wastes, combined with food waste The following average values were found:
Marketing: Directly to the consumer, via garden centres, resellers.
Example of peelings und food left-overs 1. Starting product 100.00 kg Moisture about 80.00 % 2. Final product 22.50 kg Moisture 10.00 % Water evaporation 77.50 litres 3. Energy consumption Per litre of evaporated water 0.750 kW/h Corresponds to: for 77.5 litres x 0.75 kW/h 58.125 kW/h According to the tariff (assumed CHF 0.13) CHF 7.556 a/100 kg Corresponds to: for 22.5 kg final product CHF 0.336 pro kg Food wastes are stored in Switzerland in legally prescribed refrigerated chambers. Depending on the individual case, energy costs can amount to between approx. CHF 3.00 to CHF 5.00 per day, which corresponds to an energy consumption of 23 to 38 kW/h. These costs are saved by using of the VRS System. EVERY KILOGRAM OF FINAL PRODUCT PRODUCED ON SITE REPLACES ONE KILOGRAM OF IMPORTED ANIMAL FEED OR ONE KILOGRAM OF IMPORTED FERTILIZER.
Jobs The VRS System presents homes for the disabled with the possibility of creating jobs by processing the food waste from their own restaurant operation into valuable resources.
With other words:
Food waste is an excellent raw material for Animal feed Fertilizer Water for watering plants as long as it is turned in its fresh state into a sterile, dried meal at the place of origin.
Herbert A. Strittmatter CEO VRS – Value Recovery Systems, Inc.
Luzern, 30th June 2008
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