Liang Dong-Bo, Bian Wei, Kan Rui-Zhe, Wang Wen-Xiao, Zhao Qing, Sun Yi-Qi, Li Jun
National Engineering Laboratory of Urban Sewage Advanced Treatment and Resource Utilization Technology, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China.
City Planning Technology Service Center of Beijing, Beijing 100045, China.
Huan Jing Ke Xue. 2018 Apr 8;39(4):1713-1719. doi: 10.13227/j.hjkx.201708067.
Mature aerobic granular sludge (AGS) was inoculated in a continuous-flow reactor to treat low ammonia sewage, and the feasibility of achieving partial nitritation in a continuous-flow aerobic sludge system and the demand for value (the ratio of dissolved oxygen and ammonia nitrogen) when partial nitritation is achieved at different temperatures (30, 20, and 10℃) were investigated. The control strategy was designed to maintain a constant ratio between dissolved oxygen (DO) and ammonia nitrogen (NH-N). The results revealed that stable nitritation in a continuous-flow aerobic sludge reactor could be achieved via ratio control, and the value of were 0.50 (±0.05), 0.35 (±0.03), and 0.20 (±0.02) at the temperatures 30, 20, and 10℃, respectively, from which it can be concluded that stronger oxygen-limiting conditions were required when the temperature was lower. The experiment of fluorescence hybridization (FISH) revealed that ammonia oxidizing bacteria (AOB) have a certain concentration, and the relative number of nitrite oxidizing bacteria (NOB) gradually reduced through the ratio control strategy. Based on the ratio control strategy and the characteristics of wastewater quality, full nitritation of high ammonia wastewater may be allowed; however, for low ammonia wastewater, only partial nitritation is recommended.
将成熟的好氧颗粒污泥接种到连续流反应器中处理低氨污水，研究了在连续流好氧污泥系统中实现部分亚硝化的可行性以及在不同温度（30、20和10℃）下实现部分亚硝化时对溶解氧与氨氮比值（）的要求。设计了控制策略以维持溶解氧（DO）与氨氮（NH-N）之间的恒定比例。结果表明，通过比例控制可在连续流好氧污泥反应器中实现稳定的亚硝化，在30、20和10℃时的 值分别为0.50（±0.05）、0.35（±0.03）和0.20（±0.02），由此可以得出结论，温度较低时需要更强的氧限制条件。荧光原位杂交（FISH）实验表明，氨氧化细菌（AOB）具有一定浓度，通过比例控制策略，亚硝酸盐氧化细菌（NOB）的相对数量逐渐减少。基于比例控制策略和废水水质特点，对于高氨废水可能允许实现完全亚硝化；然而，对于低氨废水，仅建议实现部分亚硝化。
