Solid and liquid/solid free waste fractions generated in households can be separated for further valorisation. Separation technologies include commercial mechanical techniques as screw press or decanting centrifuges.
Once separated, the solid fraction can be converted into biogas in an anaerobic digestion unit to be used within the building. On the other hand, the liquid fraction (solid free) can be treated with indoor and/or outdoor Nature Based Solutions (NBS) such as multi-level green walls/ green façades or constructed wetlands with a minimum energy cost allowing >95% water reuse. The effluent water can further be disinfected (by using O3/UV) and used for producing valuable fertilizer as well as toilet flushing.
- Left: http://en.puxintech.com/domesticbiogasplant
- Right: https://sites.google.com/a/alamsantidesign.com/alamsantidesign---copy/permaculture-developments/wastewater-management
Systems can be introduced in new buildings or in existing buildings with retrofitting measures.
Product life cycle stages & Modules (EN15978): D Reuse and Recycling.