处理废弃食用油
油炸、炒菜或者盘子中残留的食用油，这是比较头疼的废物（垃圾），直接冲进下水道是最便捷的处理方式，但这样会对基础设施产生影响，比如堵塞下水道，以及给污水处理厂增加负担。
湿纸巾 + 油脂沉积物 + 表面粗糙的下水道，就可能形成 Fatberg（脂肪山），是强度可能达到混凝土的物质，也就会堵塞下水道。（一下雨就涝，原来是这样）
食用油算是可燃物，所以在清洗锅碗上的油污之前，使用废布或旧报纸等进行擦拭，然后作为垃圾扔掉是好主意。如果是油炸后，剩下大量油脂，那么需要将其存入封闭容器中，部分区域，比如日本部分地区，还会有回收食用油的站点。
还有一些转为废弃油而诞生的工具，能帮助处理，比如日本流行使用油凝固剂，能让油固化，就容易当作可燃垃圾丢弃。餐馆会使用油脂拦截器，防止油污随着水流走，分离并搜集油脂。
附言：曾经餐馆的废弃食用油，流行的处理方式，是提炼后食用，这也就是「地沟油」。
🔗 参考资料 | #原理
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