Department of Civil, Construction and Environmental Engineering, North Carolina State University, Raleigh, North Carolina, USA.
Water Environ Res. 2012 Mar;84(3):195-201. doi: 10.2175/106143012x13280358613345.
Hardened and insoluble fat, oil, and grease (FOG) deposits are the primary cause of sewer line blockages leading to sanitary sewer overflows (SSOs). However, there have been very few long-term assessments of the physico-chemical characteristics of full-scale grease interceptors (GIs), the first "line of defense" against FOG buildup in sewer lines. In this study, we assessed the physico-chemical characteristics of two full-scale GIs (at a restaurant and a retirement community kitchen) over a one-year period. Statistically significant differences between bioaugmented and untreated cycles were detected for several chemical and physical properties. The treated cycles had lower BOD and COD at the grease interceptor outlet. While the combined data for all treated cycles did not show lower FOG concentrations in the GI outlet compared to the combined data for all untreated cycles, comparison of specific individual treated and untreated cycles show a positive effect due to the addition of product.
硬化和不溶性脂肪、油和油脂（FOG）沉积物是导致污水管道堵塞导致卫生污水溢出（SSO）的主要原因。然而，对于全面的油脂截流器（GI）的理化特性，即防止污水管道中 FOG 积聚的第一道“防线”，进行长期评估的情况非常少。在这项研究中，我们在一年的时间内评估了两个全面的 GI（在一家餐厅和一个退休社区厨房）的理化特性。在几个化学和物理性质方面，生物增强和未处理周期之间存在统计学上的显著差异。在油脂截流器出口处，处理过的周期的 BOD 和 COD 较低。虽然所有处理过的周期的综合数据显示，GI 出口处的 FOG 浓度并没有低于所有未处理过的周期的综合数据，但对特定的单个处理和未处理周期的比较表明，由于添加了产品，会产生积极的效果。
