Replacement of chemical oxygen demand (COD) with total organic carbon (TOC) for monitoring wastewater treatment performance to minimize disposal of toxic analytical waste
Replacement of chemical oxygen demand (COD) with total organic carbon (TOC) for monitoring wastewater treatment performance to minimize disposal of toxic analytical waste
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DOI：
10.1080/10934529.2010.506116
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发表时间：
2010-01-01
影响因子：
2.1
通讯作者：
Gray, Nicholas F.
中科院分区：
文献类型：
--
作者：
Dubber, Donata;Gray, Nicholas F.
化学需氧量（COD）广泛应用于废水监测、设计、建模和工厂运行分析。然而，这种方法会产生危险废物，包括汞和六价铬。该研究通过比较11个污水处理厂的进水和出水样品与总有机碳（TOC）的关系，检验了用总有机碳（TOC）代替COD用于一般性能监测。生化需氧量（BOD5）也作为对照。结果表明，在生活污水和城市污水中，TOC、COD和BOD5之间存在显著的线性关系，而在处理后的废水中，COD和TOC之间存在显著的线性关系。研究结果表明，TOC可可靠地用于进水废水中COD （COD = 49.2 + 3.00*TOC）和BOD5 （BOD5 = 23.7 + 1.68*TOC）的通用替代，但只能用于最终出水COD （COD = 7.25 + 2.99*TOC）。
Chemical oxygen demand (COD) is widely used for wastewater monitoring, design, modeling and plant operational analysis. However this method results in the production of hazardous wastes including mercury and hexavalent chromium. The study examined the replacement of COD with total organic carbon (TOC) for general performance monitoring by comparing their relationship with influent and effluent samples from 11 wastewater treatment plants. Biochemical oxygen demand (BOD5) was also included in the comparison as a control. The results show significant linear relationships between TOC, COD and BOD5 in settled (influent) domestic and municipal wastewaters, but only between COD and TOC in treated effluents. The study concludes that TOC can be reliably used for the generic replacement of both COD (COD = 49.2 + 3.00*TOC) and BOD5 (BOD5 = 23.7 + 1.68*TOC) in influent wastewaters but only for COD (COD = 7.25 + 2.99*TOC) in final effluents.