Peng Y Z, Chen Y, Peng C Y, Liu M, Wang S Y, Song X Q, Cu Y W
College of Environmental and Energy Engineering, Beijing University of Technology, Chaoyang District, Beijing, China 100022.
Water Sci Technol. 2004;50(10):35-43.
The feasibility of obtaining and keeping stable nitrite accumulation in Sequencing Batch Reactors (SBRs) treating domestic wastewater is studied. The final product of ammonium oxidation is either reproducible nitrate or nitrite depending on the aeration strategy. With the aerobic-anoxic sequence, two SBRs fed with domestic wastewater are operated in parallel. One SBR (SBR1) is controlled by the aeration control strategy, and the other SBR (SBR2) by alternate aeration control strategy. Based on the on-line indirect measurements of DO and pH, the relationship between pH (or DO) and nitrogen concentration (NH4+-N, NO(3-)-N and NO(2-)-N) is investigated. The result indicates that pH and DO can be used as control parameters for the real-time aeration control strategy to obtain nitritation in SBR treating domestic wastewater. The result of SBR1 indicates that long-term stable nitritation is possible at 32+/-1 degrees C. The result of SBR2 indicates that the aeration control strategy is necessary for nitritation during the acclimation period, because the nitrite accumulation disappears when the aeration is extended.
研究了在序批式反应器（SBR）处理生活污水过程中实现并保持稳定亚硝酸盐积累的可行性。铵氧化的最终产物取决于曝气策略，可为可重现的硝酸盐或亚硝酸盐。采用好氧 - 缺氧序列，两个处理生活污水的SBR并联运行。一个SBR（SBR1）采用曝气控制策略，另一个SBR（SBR2）采用交替曝气控制策略。基于溶解氧（DO）和pH的在线间接测量，研究了pH（或DO）与氮浓度（NH4 + -N、NO(3 - )-N和NO(2 - )-N）之间的关系。结果表明，pH和DO可作为实时曝气控制策略的控制参数，以在处理生活污水的SBR中实现亚硝化。SBR1的结果表明，在32±1℃下长期稳定的亚硝化是可能的。SBR2的结果表明，在驯化期亚硝化需要曝气控制策略，因为曝气延长时亚硝酸盐积累会消失。
