Quantification of nitrous oxide emissions during biological nitrogen removal from waste water due to nitrifier denitrification - a systems comparison.

由于硝化器反硝化作用从废水中生物脱氮过程中一氧化二氮排放的量化 - 系统比较。

• 批准号: BB/D000270/1
• 负责人: Ole Pahl
• 金额: $ 11.54万
• 依托单位: Glasgow Caledonian University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=BB%2FD000270%2F1
• 关键词: Quantification; nitrous; oxide; emissions; during

There is strong evidence that the biological removal of nitrogen from waste water emits considerable amounts of nitrous oxide (N2O) gas. Up to 80 per cent of removed nitrogen is emitted in the form of N2O, which is a strong greenhouse gas and ozone depletant. This fact is well reported for treatment of agricultural wastes but not for the treatment of communal/industrial waste water. This difference between reports on agricultural and commercial waste water treatment may be due to the fact that, conventionally, the emission of nitrous oxide is seen to be cause by different bacteria involved in the water treatment process. Inventories of gaseous emissions from commercial treatment works thus may have missed out a potentially significant source of this gas. The proposed research aims to investigate, under controlled conditions in a laboratory, whether the treatment of communal/industrial waste water for nitrogen removal can principally lead to significant releases of nitrous oxide. Comparison between these results and those available for the agricultural sector will establish if there are generic differences in N2O emission potential between these two sectors. The results will be used in the formulation of a strategy for further research into i) the quanitification and abatement of N2O from industrial/communal waste waters or ii) further reduction of N2O from agricultural waste water treatment, respectively.

有强有力的证据表明，生物去除废水中的氮会释放出相当数量的一氧化二氮(N2O)气体。高达80%的脱氮是以N2O的形式排放的，N2O是一种强烈的温室气体和臭氧消耗剂。这一事实在农业废物处理方面得到了很好的报道，但在公共/工业废水处理方面却没有报道。农业和商业废水处理报告之间的差异可能是因为，按照惯例，一氧化二氮的排放被认为是由水处理过程中涉及的不同细菌引起的。因此，商业处理厂的气体排放清单可能遗漏了这种气体的一个潜在的重要来源。拟议的研究旨在调查在实验室受控条件下，处理公共/工业废水以去除氮气是否会主要导致一氧化二氮的大量释放。将这些结果与农业部门现有的结果进行比较，将确定这两个部门之间在N2O排放潜力方面是否存在普遍差异。研究结果将被用于制定一项战略，分别用于进一步研究i)工业/公共废水中N2O的量化和减少或ii)农业废水处理中N2O的进一步减少。