Kim J S, Hwang Y W, Kim C G, Bae J H
Department of Environmental Engineering, Inha University, 253 Yonghyun-Dong, Nam-Gu, Inchon, 402-751, South Korea.
Water Sci Technol. 2003;47(11):153-6.
This study was performed to develop a granular sulfur packed nitrification/denitrification process employing a uniquely designed single biofilter, which treated a relatively low carbon loaded domestic wastewater taken from a primary clarifier at a municipal wastewater treatment facility. The system was tested on varying experimental conditions, e.g. inflow flow, organic load and nitrogen load. Regardless of flow rate being increased, SS and COD was unvaryingly removed up to 90 and 80%, respectively. Moreover, TKN was also decomposed up to 90%. Increase in COD load gradually led to escalating level of non-biodegradable compounds observed in effluent. Nitrification was accomplished as high as 92%, whereas denitrification was achieved up to approximately 87%. For a while, nitrification and denitrification were observed at 0.65 and 0.55 kg/m3 x day, respectively. Eventually, T-N was decomposed as high as 46%. It was concluded that granular sulfur can be used for not only electron donor, but also for a media to properly treat low carbon loaded wastewater and to filter SS efficiently.
本研究旨在开发一种采用独特设计的单一生物滤池的颗粒硫填充硝化/反硝化工艺，该工艺用于处理取自市政污水处理设施初沉池的碳负荷相对较低的生活污水。该系统在不同的实验条件下进行了测试，如进水流量、有机负荷和氮负荷。无论流量如何增加，悬浮物（SS）和化学需氧量（COD）的去除率分别稳定在90%和80%。此外，总凯氏氮（TKN）的分解率也高达90%。COD负荷的增加逐渐导致出水中不可生物降解化合物的含量上升。硝化率高达92%，而反硝化率约为87%。有一段时间，硝化和反硝化的速率分别为0.65和0.55kg/m³·天。最终，总氮（T-N）的分解率高达46%。研究得出结论，颗粒硫不仅可作为电子供体，还可作为一种介质，用于妥善处理低碳负荷废水并有效过滤悬浮物。
