Comprehensive Feasibility and Engineering Architecture Report: Closed-Loop Industrial Symbiosis Plastic Recycling Facility

The global transition toward a circular plastics economy demands a fundamental paradigm shift away from traditional mechanical recycling methodologies. Conventional mechanical processing inherently degrades polymer chain length and molecular weight with each successive thermal cycle, leading to inevitable downcycling. Furthermore, mechanical systems are fundamentally incapable of processing unwashed, mixed municipal solid waste (MSW) containing highly contaminated or multilayered plastics. To overcome these systemic limitations, this comprehensive research report delineates the engineering, chemical, thermodynamic, and regulatory architecture for a novel, decentralized, zero-grid-heating plastic recycling facility proposed for establishment in the Zamyn-Uud Free Economic Zone, Dornogovi Province, Mongolia. Designed specifically to operate autonomously in extreme winter climates where ambient temperatures frequently plummet, the facility bypasses conventional melt-recycling entirely by deploying an advanced, bifurcated Dual-Pathway processing architecture: thermochemical pyrolysis dedicated to mixed polyolefins (Pathway A) and biological enzymatic depolymerization dedicated to polyethylene terephthalate (PET) (Pathway B).