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CBOD QUESTION

Question asked by Phil Warren on Sep 18, 2018


Did  three CBODs using dilutions of 50, 150, and 275mls.  Used 15 mls polyseed and added TCMP.  This on a final effluent. Dilution water was less than .20 depletion,  and GGA was good  Results were:

                                       50mls=13mg/l

                                       150mls=8mg/l

                                        275mls=5mg/l

Is it normal for results to go from high to low like they do, or should they all be close together?

Also, if dilution water ihas a depletion of greater than .20 can the CBOd results still be valid?

Thanks!!!

                   Phil 

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