Kim Daekeun, Kim Keum-Yong, Ryu Hong-Duck, Min Kyung-Kook, Lee Sang-Ill
Department of Environmental Engineering, Seoul National University of Technology, Seoul, Republic of Korea.
Bioresour Technol. 2009 Jul;100(13):3180-4. doi: 10.1016/j.biortech.2009.01.062. Epub 2009 Mar 6.
The performance of a pilot-scale biological nutrient removal process has been evaluated for 336 days, receiving the real municipal wastewater with a flowrate of 6.8m(3)/d. The process incorporated an intermittent aeration reactor for enhancing the effluent quality, and a nitrification reactor packed with the porous polyurethane foam media for supporting the attached-growth of microorganism responsible for nitrification. The observation shows that the process enabled a relatively stable and high performance in both organics and nutrient removals. When the SRT was maintained at 12 days, COD, nitrogen, and phosphorus removals averaged as high as 89% at a loading rate of 0.42-3.95 kg COD/m(3)d (corresponding to average influent concentration of 304 mg COD/L), 76% at the loading rate of 0.03-0.27 kg N/m(3)d (with 37.1mg TN/L on average), and 95% at the loading rate of 0.01-0.07 kg TP/m(3)d (with 5.4 mg TP/L on average), respectively.
一个中试规模的生物脱氮除磷工艺已运行336天，处理流量为6.8立方米/天的实际城市污水。该工艺采用间歇曝气反应器来提高出水水质，并采用填充有多孔聚氨酯泡沫介质的硝化反应器，以支持负责硝化作用的微生物的附着生长。观察结果表明，该工艺在有机物和营养物去除方面都能实现相对稳定且高效的运行。当污泥龄维持在12天时，在0.42 - 3.95千克化学需氧量/立方米·天的负荷率（对应平均进水浓度为304毫克化学需氧量/升）下，化学需氧量、氮和磷的去除率平均分别高达89%；在0.03 - 0.27千克氮/立方米·天的负荷率（平均总氮为37.1毫克/升）下，氮的去除率为76%；在0.01 - 0.07千克总磷/立方米·天的负荷率（平均总磷为5.4毫克/升）下，磷的去除率为95%。
