Matlib is a library of materials properties. The UOM’s are available unit operation models, representing process equipment. The waste is represented by Heaps, described as a mixture of particles. Recycling facilities are designed in Flowcharts. The Scheduler links heaps to a flowchart. The technical constraints as well as the costs and revenues are laid down in Contracts. The Simulator creates Technical output like the composition of the generated products and Economical output, the value of the different products. Safety and environment are no integrated part of SPS. Instead, ParsimPro Simulation software creates output that can be linked with their tools.