A new method for estimating the ultimate BOD (Lo) and the first#x2010;order BOD rate coefficient (k) has been developed. The method uses the integral of the BOD#x2010;exerted curve rather than its slope, and is, therefore, efficient and robust. The accuracy is superior to that of traditional techniques, producing results comparable to the Reed#x2010;Theriault non#x2010;linear least squares technique. In addition, the method has no restriction on the range of input data and handles lag periods in BOD exertion without difficulty.
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