If we change the approach of waste, we can find a rich source of recyclable materials and energy.
In our valuable waste materials are mixed and contaminated. The sorting of recyclable materials is easy, but the real challenge is the separation of organic waste. There are two ways to do this:
- The first is separation at source, where organic waste should be collected separately in special containers even in our households. This is very difficult to achieve because of the mentality of the population
- The second method is separation in waste sorting and treatment stations. Due to problematic hygienic conditions and the high cost of staff, manual separation of biological waste is not an option. Mechanical separation by grinding and sifting is the most widespread method today, but its efficiency is not optimal because in the non-organic fraction the percentage of organic waste is high.
We propose an effective separation system for domestic waste. The heart of the system is an innovative hydraulic press that achieves the highest separation efficiency (98%). Mixed waste is loaded into the press and under high pressure, the soluble organic matter behaves like a liquid and it is separated from the dry fraction. The organic fraction is further cleaned to limit remaining impurities, such as plastics and inert materials, to less than 0.5% of the total organic matter.
The result is a homogeneous paste that is perfectly suited for anaerobic digestion and provides low maintenance costs for digestors. The cellular structures of this organic material are broken, resulting in a higher gas yield with shorter retention times. Short retention times are of great economic importance because they reduce investment costs for digestors. As a result of very clear separation, a range of high quality products can be obtained.
ADVANTAGE: Quality products from waste
BIOGAZ: The organic fraction is subject to anaerobic digestion for the production of biogas that can be transformed into electricity and heat or can be purified to be introduced into the network gas or to be bottled as liquid gas. It can also be used as process gas in thermal power plants.
COMPOST: After releasing most of the gas, the anaerobic digestate digestate is stabilized and prepared in high-quality compost according to the European Compost Network standards.
RECYCLING MATERIALS: Sorting procedures before and after separation of organic and inorganic fractions allow optimum recycling of paper and cardboard, plastic, glass and metal.
High Quality RDF: The dry fraction can be easily prepared in high quality RFD due to its minimal organic content. It is suitable for use in RDF combustion plants in the industry, with high calorific power.