State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Siping Road, Shanghai 200092, PR China.
Bioresour Technol. 2012 Jan;104:19-27. doi: 10.1016/j.biortech.2011.09.049. Epub 2011 Nov 11.
The endogenous processes in anaerobic end and aerobic end sludge responsible for biological denitrifying phosphorus removal were compared during a 7-d starvation under anaerobic conditions. The results showed that polyphosphate and glycogen were utilized simultaneously to generate maintenance energy for both the anaerobic and aerobic end sludge. During the 7-d starvation, the decay rate of denitrifying-phosphorus-accumulating-organisms (DPAOs) was higher for the aerobic end sludge than for the anaerobic end sludge. More energy was required for maintenance in the aerobic end sludge than for the anaerobic end sludge, with the greater amount of phosphorus release and glycogen degradation occurring in the aerobic end sludge. Moreover, different metabolic pathways for the endogenous processes were observed for the anaerobic and aerobic end sludge. After the 7-d starvation, the activity of DPAOs decreased more for the aerobic end sludge than that for the anaerobic end sludge.
比较了厌氧末端和好氧末端污泥中负责生物反硝化除磷的内源性过程，在 7 天的厌氧饥饿条件下进行。结果表明，聚磷酸盐和糖原同时被利用，为厌氧末端和好氧末端污泥产生维持能量。在 7 天的饥饿期内，好氧末端污泥中反硝化除磷菌（DPAOs）的衰减速率高于厌氧末端污泥。好氧末端污泥的维持需要更多的能量，而好氧末端污泥中发生了更多的磷释放和糖原降解。此外，观察到厌氧末端和好氧末端污泥中的内源性过程存在不同的代谢途径。饥饿 7 天后，好氧末端污泥中 DPAOs 的活性下降幅度大于厌氧末端污泥。
