In the REnescience process, warm water is added to residual MSW to achieve temperatures appropriate for enzymatic hydrolysis. Through enzymatic action, biodegradable materials are liquefied, which permits easy separation of non-degradable solids. Processing of residual MSW is robust, with no requirement for shredding. This makes the process much simpler than other known processes, and it has a high capture rate of the biomass and recycling of materials. This is good for the environment and it is good for business.
Liquefaction of household waste
Liquefaction is key in the REnescience process. Enzymes are added into the waste stream in a specially designed reactor. Biodegradable content of unsorted waste is liquefied and separated from non-degradable solids to create a bioliquid with high biomethane potential.
In the ballistic separation process, the treated waste is separated into three fractions – bioliquid, 2-dimensional and 3-dimensional solid fractions.
Washing of 3-dimensional fraction
The 3-dimensional fraction is transported to a washing drum, where surface residues are washed off. Used wash water is recirculated.
First pressing of 2-dimensional fraction
After the ballistic separator, the 2D fraction is transported to a press, where a liquid containing organic fibres and residues are separated from the 2D fraction. The liquid is then mixed into the bioliquid stream.
Washing of 2-dimensional fraction
The 2-dimensional fraction is washed to improve storage stability and retain as much biomaterial as possible. Used wash water is recirculated back to the pre-treatment step.
Second pressing of 2-dimensional fraction
After washing, a second pressing takes place to increase dry matter content.
When the bioliquid exits the ballistic separator, it is mixed with bioliquid from the first pressing of the 2D fraction. Further treatment depends on the intended use of the bioliquid. Depending on your business and markets, the bioliquid can be used for a variety of purposes, for example biogas production.