775

Source: A.T. Wallace and D.M. Zellman, 1971, Characterization of time varying organic loads, J. Sanit. Eng. Div, Proc. ASCE 97:257.

Notes: Average = 698 mg/l Maximum = 1210 mg/l Standard deviation = 158.6 mg/l

Source: A.T. Wallace and D.M. Zellman, 1971, Characterization of time varying organic loads, J. Sanit. Eng. Div, Proc. ASCE 97:257.

Notes: Average = 698 mg/l Maximum = 1210 mg/l Standard deviation = 158.6 mg/l

EQUALIZATION TIME (hours)

FIG. 7.13.6 Maximum effluent values as a function of equalization time and confidence level.

EQUALIZATION TIME (hours)

FIG. 7.13.6 Maximum effluent values as a function of equalization time and confidence level.

Similarly, if the confidence level of 90% (one sample in ten or roughly two samples per day exceeding 800 mg/l) is acceptable, the size of the tank can be reduced to yield a detention time of about 2 hr.

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