Food waste disposers (FWDs) streamline kitchen waste management and facilitate waste classification, whether they would increase the potential of blockage in kitchen drainage system is still unknown. This study conducted a theoretical analysis of the interactive forces between fat, oil, and grease (FOG) deposits and their aggregation on pipe walls. The study involved grading food waste particles processed by FWDs using sieving and weighing techniques to determine the mean weight diameter (MWD) of various aggregations. A full-scale experimental system, implemented in a 60-m high test tower, simulated blockages in horizontal pipes of high-rise buildings. The effect of pipeline materials and particle sizes on blockage were examined by measuring the adhesion of deposits on horizontal pipes. Energy dispersive spectrometer (EDS) analysis suggested that liquid bridge force is a primary factor in aggregate formation. Hand-cut particles formed aggregates with the highest MWD value. Particle size analysis revealed that sizes ranging from 2.36 to 4.75 mm, 1.18–2.36 mm, and 0.60–1.18 mm constituted over 80 % of particles ground by FWDs, with an average size of 2.16 mm. Results of full-scale experiment indicate particle diameters, friction coefficients and lipophilic coefficient significantly affected the propensity of these aggregates to adhere to pipes. Notably, particles processed by FWDs tended to cause blockages more frequently than hand-cut particles. These findings elucidate the deposition mechanism of FOG deposits and offer strategies to reduce blockages in kitchen drainage systems, such as reducing current grinding particle size by 18 % to 1.77 mm or selecting pipes like cast iron and high-density polyethylene.

中文翻译：

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脂肪、油和油脂 (FOG) 沉积物之间的相互作用力以及食物垃圾处理器对厨房排水系统的影响

食物垃圾处理器（FWD）简化了厨房垃圾管理并促进垃圾分类，但它们是否会增加厨房排水系统堵塞的可能性仍不得而知。本研究对脂肪、油和油脂 (FOG) 沉积物及其在管壁上的聚集之间的相互作用力进行了理论分析。该研究涉及使用筛分和称重技术对 FWD 处理的食物垃圾颗粒进行分级，以确定各种聚集体的平均重量直径 (MWD)。在60米高的测试塔中实施的全尺寸实验系统，模拟高层建筑水平管道的堵塞情况。通过测量水平管道上沉积物的粘附力来检查管道材料和颗粒尺寸对堵塞的影响。能量色散光谱仪（EDS）分析表明液桥力是聚集体形成的主要因素。手工切割颗粒形成具有最高 MWD 值的聚​​集体。粒度分析显示，FWD 研磨颗粒的 80% 以上为 2.36 至 4.75 毫米、1.18 至 2.36 毫米、0.60 至 1.18 毫米，平均粒度为 2.16 毫米。全尺寸实验结果表明，粒径、摩擦系数和亲油系数显着影响这些聚集体粘附在管道上的倾向。值得注意的是，FWD 处理的颗粒比手工切割的颗粒更容易导致堵塞。这些发现阐明了FOG沉积物的沉积机制，并提供了减少厨房排水系统堵塞的策略，例如将当前研磨颗粒尺寸减小18%至1.77毫米或选择铸铁和高密度聚乙烯等管道。