Enhancing Biological Denitrification by Addition of External Carbon Sources: What, Where and When

在澳大利亚和世界范围内，废水处理行业越来越多地使用外部加碳来增强氮的去除。这项技术大大增加了运行成本，其中碳源的非最佳使用是主要原因。为了确保在最少使用外部碳的情况下获得长期最佳的反硝化性能，我们将首次全面研究外部加碳对反硝化群落和反硝化性能的影响，并在此基础上回答在各种工艺设计和操作条件下应该使用哪些碳源，在何处以及何时/如何添加碳源的问题。

External carbon addition for enhancing nitrogen removal is being increasingly used by wastewater treatment industry both in Australia and worldwide. This technology adds considerably to the operating cost, to which the non-optimal use of carbon sources has contributed significantly. To ensure long-term optimal denitrification performance with minimal use of external carbon, we will perform the first comprehensive study of the impact of external carbon addition on the denitrifying community and denitrification performance and, on this basis, answer the questions of what carbon sources should be used, where and when/how they should be added under various process design and operational conditions.