Novel nitrogen removal process via nitrite in a biofilm system and analysis of microbial community dynamics

从废水中去除氮对于保护我们独特的水生环境至关重要。这种去除通常通过两个步骤实现：硝化作用通过亚硝酸盐将铵转化为硝酸盐；反硝化作用通过亚硝酸盐将硝酸盐再次转化为无害的氮气。该项目将开发一种生物膜反应器系统，使该过程仅通过亚硝酸盐而不是硝酸盐进行。通过这种方式可以节省40%的碳和25%的氧需求。这一过程尚未在受控条件下得到证明，但澳大利亚和韩国研究小组的最新进展现在提供了实现这一有希望的过程的新方法。

Nitrogen removal from wastewater is essential to protect our unique aquatic environment. This removal is typically achieved via two steps: Nitrification converts ammonium via nitrite to nitrate; denitrification converts nitrate via nitrite again to harmless nitrogen gas. This project will develop a biofilm reactor system, which enables this process to run via nitrite only, instead of nitrate. Savings of 40% carbon and 25% oxygen requirements are possible this way. This process has not yet been demonstrated under controlled conditions, but recent progress in the research groups in Australia and Korea now offer novel ways to accomplish this promising process.