The city of Stillwater is planning to install a new settling tank as an upgrade to...

The city of Stillwater is planning to install a new settling tank as an upgrade to their existing water treat plant. You run a batch settling test using a 2.0 m column and coagulated water from their existing tank and collect the following data (Table 1). Using this data, design a settling tank to remove 65% of the influent suspended solids. Assume a design flow of 0.5 m³/s. Use scale up factors of 0.65 for overflow rate and 1.75 for detention time (Eckenfelder 1980). Discuss your results.

Table 1. Percent suspended solids removal as a function of time and depth.

	Sampling time (min)
Depth (m)	5	10	20	40	60	90	120
0.5	41	50	60	67	72	73	76
1.0	19	33	45	58	62	70	74
2.0	15	31	38	54	59	63	71

Solutions

Expert Solution

STEP 1 = CALCULATING THE ALL VELOCITY ACCORDING TO THEIR DISCHARGE

CALCULATION OF WATER TREATMANT PLANT

Ally Wells answered 1 year ago

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