Xu Guangjing, Zhou Yan, Yang Qin, Lee Zarraz May-Ping, Gu Jun, Lay Winson, Cao Yeshi, Liu Yu
Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore, 637141, Singapore.
Appl Microbiol Biotechnol. 2015 Mar;99(6):2485-90. doi: 10.1007/s00253-015-6423-6. Epub 2015 Feb 1.
The deammonification process combining partial nitritation and anaerobic ammonium oxidation has been considered as a viable option for energy-efficient used water treatment. So far, many full-scale sidestream deammonification plants handling high-ammonia used water have been in successful operation since Anammox bacteria were first discovered in the 1990s. However, large-scale application of this process for treating municipal used water with low ammonia concentration has rarely been reported. Compared to the sidestream deammonification process, the mainstream deammonification process for municipal used water treatment faces three main challenges, i.e., (i) high COD/N ratio leading to denitrifiers outcompeting Anammox bacteria, (ii) numerous difficulties in selective retention of ammonia-oxidizing bacteria (AOB) over nitrite-oxidizing bacteria (NOB), and (iii) sufficient accumulation of Anammox bacteria. Therefore, this paper attempts to provide a detailed analysis of these challenges and possible solutions towards sustainable mainstream deammonification process.
将部分亚硝化和厌氧氨氧化相结合的脱氨工艺被认为是一种可行的节能污水处理方案。自20世纪90年代首次发现厌氧氨氧化细菌以来，目前已有许多处理高氨废水的全规模侧流脱氨工厂成功运行。然而，很少有关于该工艺大规模应用于处理低氨浓度城市污水的报道。与侧流脱氨工艺相比，城市污水处理的主流脱氨工艺面临三个主要挑战，即：（i）高COD/N比导致反硝化菌胜过厌氧氨氧化细菌；（ii）选择性保留氨氧化细菌（AOB）而不是亚硝酸盐氧化细菌（NOB）存在诸多困难；（iii）厌氧氨氧化细菌的充分积累。因此，本文试图对这些挑战以及实现可持续主流脱氨工艺的可能解决方案进行详细分析。
