Steyer P, Bouvier J C, Conte T, Gras P, Harmand J, Delgenes J P
Laboratoire de Biotechnologie de l'Environnement, LBE - INRA, Narbonne, France.
Water Sci Technol. 2002;45(10):133-8.
This paper describes the use of a Fourier Transform Infra-Red (FT-IR) spectrometer as an on-line sensor to measure Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), Volatile Fatty Acids (VFA), and Partial and Total Alkalinity (PA and TA) in anaerobic digestion processes for the treatment of industrial wastewaters. Comparison with manual off-line analysis and with an on-line industrial TOC analyser and an on-line titrimetric sensor (for the measurements of VFA, TA and PA) are provided to demonstrate the interest of spectral analysis in the mid infra-red domain for the monitoring of anaerobic digestion processes. In order to further illustrate the advantages of using such a technique, on-line measurements recorded during an accident of the pH regulation in the input (pH in the reactor went above 11 and biomass activity stopped) are shown. They demonstrate that, if carefully performed, the calibration can be extended outside its range while being still compatible with requirements of wastewater treatment processes.
本文介绍了使用傅里叶变换红外（FT-IR）光谱仪作为在线传感器，来测量工业废水厌氧消化过程中的化学需氧量（COD）、总有机碳（TOC）、挥发性脂肪酸（VFA）以及部分和总碱度（PA和TA）。通过与手动离线分析、在线工业TOC分析仪以及在线滴定传感器（用于测量VFA、TA和PA）进行比较，证明了中红外光谱分析在监测厌氧消化过程中的价值。为了进一步说明使用该技术的优势，展示了在进水pH调节事故期间（反应器内pH超过11且生物质活性停止）记录的在线测量结果。这些结果表明，如果操作得当，校准范围可以扩展到其规定范围之外，同时仍符合废水处理过程的要求。
