At Envitech International we are passionate about protecting our environment. It is our mission to bring new innovative ways to process municipal waste to countries around the world. Our aim is to extract the maximum possible benefit in the most economical way. As such, our municipal waste solution offers an opportunity to recover clean useful recyclables as well as utilise organics in a highly efficient and cost-effective way. It is a truly unique and innovative process which offers possibilities that have not been possible until now.
Overall, we guarantee a minimum of 90% clean separation of incoming municipal waste and on average we achieve around 95%. This is effectiveness which arguably no other technology can offer. Furthermore, the separation is clean and the fractions typically require no further cleaning. Lower capital and operating costs than other technologies also mean that our plants can be smaller and located closer to waste sources. As such, we reduce transportation costs and associated pollution significantly.
We work with select partners and technology providers to integrate innovative technologies into a municipal waste processing plant design that features a very clever operational process flow. It features 3 stages.
- Waste arrives at a waste reception hall. It is then loaded onto a shredder and shredded onto smaller particles. A conveyor belt then takes it to the second hall.
- The conveyor belt loads the waste into specially designed and patented autoclaves. Using steam at high pressure, the waste is completely sterilised for a period of typically a few hours. It has to be noted that, unlike other autoclaves, the steam is not in direct contact with the waste. Our autoclaves feature a unique design and the result is that conditions inside can be managed and the risk of blockages is eliminated. The process shrinks the volume of the waste, bad bacteria and associated foul odours and removes labels and dyes from packaging.
- Once sterilisation is complete, another conveyor belt takes the waste to the third hall for separation. After the waste sets for a short period, it goes through a cleverly designed layout of the latest cutting-edge separation technologies. Market leading systems include mechanical, magnetic, optical and other sorting machines. The end result is a virtually complete separation of the waste into different types of plastics, glass, ferrous and non-ferrous metals, textiles and more. Furthermore, an optional addition allows glass separation according to colour. The organic fraction is also separated with 90-95% organic content.
A unique specially developed and patented software controls the entire process. The process workflow is fully automated such that no person touches waste from start to end. No manual sorting is necessary which reduces operating costs and health hazard risks considerably. Special sensors in the autoclaves recognise the waste composition and the software adjusts the sterilisation parameters for maximum effectiveness.
The sterilisation process decontaminates, sorts and treats difficult mixed waste in a way that is highly effective and efficient. This also means that the plant is virtually odour free, unlike most existing waste processing plants. The outputs are clean recyclable fractions that have high value as well as a clean organic fraction with high energy content. It can be processed further to generate renewable energy which covers the needs of the plant making it energy self-sufficient.
Our plant is considerably cheaper to build and operate than other MRF plants as well as EfW technologies. On average the operating costs in Europe are around 20 EUR per tonne of waste. This does not even take into account utilising the energy-rich organic waste. Processing it in a heat and power combustion or an anaerobic digestion plant generates a considerable amount of renewable electricity and heat. It covers all the plant energy needs and leaves surplus which can be sold to the grid. By incorporating all this in an efficient way, the plant operating costs can be cut to less than half of the above. In some countries, the plant can even be profitable even without considering income from gate fees. This is truly astonishing for the waste sector, where operating costs are well above 100 EUR per tonne for incineration and typically 40-80 EUR per tonne for MBT plants. Furthermore, given our plant’s high effectiveness, municipalities do not have to worry about the high additional costs of implementing a separate collection for recyclables.