** v = 19526.4 m^3 HRT = 18 days QUESTIONS A plant producing commercial quantiti
ID: 534823 • Letter: #
Question
** v = 19526.4 m^3 HRT = 18 daysQUESTIONS A plant producing commercial quantities of yeast by aerobic fermentation has to treat 45.2 m /hr of molasses process water (MPW) having an average CoD content of 70,000 mg O2 per L. This MPW is first sent to a low-rate anaerobic digester whose organic loading rate (OLR) has been estimated as 2.5 kg COD/m ld. The COD content of the effluent leaving the anaerobic digester is estimated to be around 25,000 mg/L. The OLR is defined as: QAC OLR where AC is the estimated reduction in CoD concentration of the wastewater (in kglm3) as it passes through the digester, Q is the wastewater flowrate (in m ld), and VR is the digester volume (in m
Explanation / Answer
This biological treated molasses process water is not suitable for discharge because the COD,BOD,TKN,TDS values are not correct.the pollution board has given the parameters but the parameters didnot match with the values which you are given.
BOD should be 50mg/lt,COD should be 250mg/lt,TDS=100mg/lt,TKN=50 mg/lt
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