Total biochemical oxygen demand

Several methods have been developed to estimate the oxygen demand in waste water treatment systems. Commonly used laboratory methods are biochemical oxygen demand (BOD), chemical oxygen demand (COD), total oxygen demand (TOD), total organic carbon (TOC), and theoretical oxygen demand (ThOD). 

BOD, biochemical oxygen demand COD, chemical oxygen demand TSS, total suspended solids. 

BOD5, 5d-biochemical oxygen demand GAC, granular activated carbon IDS, total dissolved solids NTU, normal turbidity units. 

Source Adapted from Daly, P.G. and Shen, C.C., The deep shaft biological treatment process, in Proceedings of the 43rd Purdue Industrial Waste Conference, May 1988. With permission. BOD, biochemical oxygen demand COD, chemical oxygen demand TSS, total suspended solids. 

Marty and Aim [177] described an automatic determination of the total oxygen demand of waste water. The method gives rapid results and correlates well with chemical oxygen demand and biochemical oxygen demand. Measurements of corrections are made for nitrogen compounds which are the principal interferents. 

Note pH (within the range of 6.0 to 9.0) BPT incorporates BAT and BCT BPT, best practicable control technology NS, new source performance standards BOD, biochemical oxygen demand TSS, total suspended solids COD, chemical oxygen demand O G, oil and grease BAT, best available technology economically achievable BCT, best conventional pollutant control technology. 

---