Amerlinck Youri, Vanassche Ellen, Versluys Hélène, Nopens Ingmar
BIOMATH, Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure Links 653, Gent 9000, Belgium E-mail:
Water Sci Technol. 2016 Dec;74(12):2958-2969. doi: 10.2166/wst.2016.489.
Evaluating the performance of a wastewater treatment plant (WWTP) requires a good characterization of the biodegradable substrate entering the plant. As is generally acknowledged, the wastewater characteristics under rain or storm weather conditions vary significantly from dry weather conditions but this is rarely accounted for in modelling exercises. In order to address this defect, a measurement campaign was set up and samples were analysed using respirometric assays. In this paper, some hurdles regarding measurement campaigns under dilute wastewater conditions and a better exploration of the impact of using respirometric assays are described and discussed. The dependence of the heterotrophic yield on different substrates severely hampers the evaluation of the respirograms under dilute wastewater conditions. In addition, the low load conditions limit the application of the assays due to insufficient sensitivity of the experiment and uncontrolled oxygen inputs. The results clearly demonstrate the need for further research in order to allow for a proper evaluation of WWTP performance under rain and storm weather conditions.
评估污水处理厂（WWTP）的性能需要对进入该厂的可生物降解底物进行良好的表征。众所周知，降雨或暴雨天气条件下的废水特性与干旱天气条件下有很大差异，但在建模过程中很少考虑到这一点。为了解决这一缺陷，开展了一次测量活动，并使用呼吸测定法对样本进行了分析。本文描述并讨论了在稀释废水条件下进行测量活动时遇到的一些障碍，以及对使用呼吸测定法的影响进行更好探索的相关问题。在稀释废水条件下，异养产率对不同底物的依赖性严重阻碍了呼吸图的评估。此外，低负荷条件由于实验灵敏度不足和氧气输入不受控制，限制了这些测定法的应用。结果清楚地表明，需要进一步研究，以便能够在降雨和暴雨天气条件下对污水处理厂的性能进行恰当评估。
