Abstract:The experiment was carried out in a sequencing batch airlift reactor (SBAR) using mixture of sodium acetate and glucose as carbon source. Start-up of the aerobic granular reactor and effect of temperature on the removal characteristics of ammonia nitrogen and granule stability were investigated. Aerobic granule with compacted structure and smooth surface could be obtained at 20℃ using the disintegrated granules as inoculated sludge. The average diameter, density and SVI of the obtained granules were 3.2mm, 1.029g/mL and 70mL/g, respectively. When temperature directly increased from 20℃ to 26℃, the ammonia concentration in effluent was reduced from 10.6 to 0.2mg/L. At the same time, nitrite accumulation in effluent was observed with a nitrite accumulation ratio (NO2--N/NOx--N) of 93.9%. However, granules disintegrated gradually due to the decreased ratio of protein to polysaccharide in extracellular polymeric substance (EPS) during the following 47d tests.
暴瑞玲, 于水利, 王玉兰, 左行涛, 王娟. 温度对好氧颗粒污泥脱氮性能及颗粒稳定性的影响[J]. 中国环境科学, 2009, 29(7): 697-701.
BAO Rui-Ling, YU Shui-Li, WANG Yu-Lan, ZUO Xing-Tao, WANG Juan. Effect of temperature on performance of ammonia nitrogen removal with aerobic granular sludge and granule stability. . CHINA ENVIRONMENTAL SCIENCECE, 2009, 29(7): 697-701.