PROCESS TO RECOVER A PORTION OF POST-RECYCLING MUNICIPAL SOLID WASTE

This specification describes a system and process for treating waste， for example municipal solid waste (MSW) or post-recycling municipal solid waste. The system includes a press and a pulper. The press is adapted to provide a wet fraction of the waste suitable for anaerobic digestion and rejects. The pulper is adapted to receive the rejects and produce pulp. The pulper may be， for example， a drum pulper. In the process， waste is separated into a press into an organic fraction and rejects. The organic fraction is treated by way of anaerobic digestion. The rejects are separated， optionally in a drum pulper， to produce a fraction containing pulp. The pulp can be re-used to make paper or other products. In some case， 70% or more or 80% or more of MSW can be diverted from landfill.

本规范阐述了一种用于处理废弃物的系统与工艺，该类废弃物可例如为城市生活垃圾（municipal solid waste, MSW）或回收后城市生活垃圾。该系统包含压榨机与碎浆机：压榨机可产出适用于厌氧消化（anaerobic digestion）的湿态废弃物组分，并分离出残渣；碎浆机用于接收该残渣并制得纸浆，该碎浆机例如可采用转鼓碎浆机（drum pulper）。在该工艺中，废弃物经压榨机分离为有机组分与残渣；有机组分通过厌氧消化工艺进行处理，残渣则经分离工序（可选用转鼓碎浆机）得到含纸浆的组分。所得纸浆可重新用于造纸或制造其他产品。在部分应用场景中，70%及以上或80%及以上的城市生活垃圾可免于进入垃圾填埋场。