首页> 外文OA文献 >Selection of mathematical models for N2O production by ammonia oxidizing bacteria under varying dissolved oxygen and nitrite concentrations
【2h】

Selection of mathematical models for N2O production by ammonia oxidizing bacteria under varying dissolved oxygen and nitrite concentrations

机译:在不同的溶解氧和亚硝酸盐浓度下,氨氧化细菌生产N2O的数学模型的选择

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Mathematical models for nitrous oxide (N2O) production by ammonia oxidizing bacteria (AOB) based on a single pathway have been proposed to support the design and operation of wastewater treatment plants (WWTPs). However, the boundary conditions for each of these models have not been established to date. This study tests the predictive ability of two single-pathway models based on the AOB denitrification pathway and the hydroxylamine (NH2OH) oxidation pathway, respectively, to describe the N2O data generated by a N2O model that incorporates both pathways, and provides theoretical guidance on how to use these two single-pathway models as well as the two-pathway model under various conditions. The model based on the AOB denitrification pathway can be used under the condition of a constant dissolved oxygen (DO) concentration, applied either at a low DO concentration (>=similar to 0.5 mg O-2/L) with any non-inhibitory nitrite (NO2-) concentrations or at higher DO (>=similar to 0.5 mg O-2/L) with relatively high NO2- (>=similar to 1.0 mg N/L) but non-inhibitory concentrations. The model based on the NH2OH oxidation pathway can be applied under the condition of relatively high DO concentrations (>=similar to 1.5 mg O-2/L), being either constant or time-varying, with any non-inhibitory NO2- concentrations. Under other conditions, the two-pathway model should be applied. (C) 2015 Elsevier B.V. All rights reserved.
机译:已经提出了基于单一途径的氨氧化细菌(AOB)生产一氧化二氮(N2O)的数学模型,以支持废水处理厂(WWTP)的设计和运营。但是,到目前为止,尚未为每个模型建立边界条件。这项研究分别测试了基于AOB反硝化途径和羟胺(NH2OH)氧化途径的两个单途径模型的预测能力,以描述由结合了这两种途径的N2O模型生成的N2O数据,并为如何提供方法提供了理论指导在不同条件下使用这两个单路径模型以及两个路径模型。可以在恒定溶解氧(DO)浓度的条件下使用基于AOB反硝化途径的模型,该溶解氧可以在低DO浓度(>类似于0.5 mg O-2 / L)下与任何非抑制性亚硝酸盐一起使用(NO2-)浓度或较高的DO(> =类似于0.5 mg O-2 / L)和较高的NO2-(> =类似于1.0 mg N / L),但浓度没有抑制性。基于NH2OH氧化途径的模型可以在相对较高的DO浓度(> =类似于1.5 mg O-2 / L)下使用,该浓度恒定或随时间变化,并且具有任何非抑制性的NO2-浓度。在其他条件下,应使用两路径模型。 (C)2015 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号