生物强化滤池在低温低浊水处理中的应用

Application of Biological Enhanced Carbon/Sand Filter Tank in Removal of Organic Matters from Low-Temperature and Low-Turbidity Water

在低温低浊条件下，通过对生物强化炭砂滤池（BCSFR）与普通炭砂滤池（CSFR）进行对比实验，研究有机物及消毒副产物的去除效果及机制。结果表明，在原水温度4～10℃，浊度为2～6NTU条件下，BCSFR对高锰酸盐指数（PI）、TOC和UV254的平均去除率分别达到48．28％、31．80％和29．32％。此外，可生物同化有机碳（AOC）和可生物降解有机碳（BDOC）的去除率分别为50．83％和51．16％。由于微生物降解与活性炭吸附的协同作用，BCSFR能够比普通CSFR更有效去除有机物，因此有可能成为一种适合处理寒冷地区低温低浊水的安全饮用水保障技术。

This study investigated the removal of organic matters and disinfection byproducts from low-temperature and low-turbidity water by comparing the conventional carbon/sand filter (CSFR) and biological enhanced CSFR (BCSFR). The results demonstrated that BCSFR could remove permanganate index (PI), TOC and UV254 with average efficiency of 48.28%, 31.80% and 29.32%, respectively at water temperature of 4-10°C and turbidity of 2-6NTU. Additionally, removing efficiency of assimilative organic carbon (AOC) and biodegradable dissolved organic carbon (BDOC) reached 50.83% and 51.16% on average. The BCSFR was shown able to eliminate organic matters more effectively than CSFR, preliminarily due to the synergistic adsorption of carbon and biodegradation of microorganisms. The BCSFR provides a remarkable potential of applications for the treatment of low-temperature and low-turbidity water.