The recycling of source separated polyolefins (POs) (e.g., light weight packaging waste) is already state of the art. Therefore, further plastic materials contained in mixed wastes have become more important due to increasing legal pressure. Mixed commercial and municipal solid wastes contain large quantities of POs. These mixed wastes would usually be treated in waste incinerators or processed to refuse-derived fuel for cement plants. Large-scale experiments were conducted to assess the potential of such POs from these waste streams for recycling processes. The potential and applicability of a dry-mechanical and subsequently wet-mechanical (Wet-mechanical) processing with the aim of generating a PO concentrate for chemical recycling purposes was assessed. These investigations’ focus was put on the centrifugal force separator technology as the core element of Wet-mechanical processing. In addition to the input material, all output materials and process water streams were chemically and physically characterized to estimate potential treatment or recycling paths. Results demonstrate that a two-stage purification is necessary to produce POs with sufficient purity out of both wastes. Chlorine and heavy metal levels are simultaneously reduced. The increased quantity of impurities only slightly changes the density of the process waters. Process water analyses show that wastewater treatment is necessary before discharge into a receiving water or sewage treatment plant. The sediment does not fulfil any hazard-relevant properties, and different thermal treatment options are possible.

源分离的聚烯烃（PO）（例如，轻质包装废料）的再循环已经是现有技术。因此，由于法律压力的增加，混合废物中所含的其他塑料材料变得越来越重要。混合的商业和城市固体废物包含大量的PO。这些混合废物通常将在废物焚化炉中处理或加工成水泥厂的垃圾衍生燃料。进行了大规模实验，以评估这些废物流中此类PO的回收过程的潜力。评估了干式机械加工和随后的湿式机械加工（湿式机械加工）工艺的潜力和适用性，目的是生成用于化学回收目的的PO精矿。这些研究的重点放在离心力分离器技术作为湿机械加工的核心要素上。除输入物料外，还对所有输出物料和过程水流进行了化学和物理表征，以估算潜在的处理或回收途径。结果表明，要从两种废物中生产出具有足够纯度的PO，必须进行两步纯化。同时降低了氯和重金属的含量。杂质数量的增加仅略微改变了工艺用水的密度。工艺水分析表明，在将污水排入接收水或污水处理厂之前，必须进行废水处理。沉积物不具有任何与危害相关的特性，并且可能有不同的热处理选择。