Assignment 1 WasteWater
Assignment 1 A coagulation treatment plant with flow rate of 0.5 /s is dosing alum at 23.0 mg/L. No other chemicals ar
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- Ummiey Syahirah
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Assignment 1 A coagulation treatment plant with flow rate of 0.5
/s is dosing alum at 23.0 mg/L. No
other chemicals are added. The raw water suspended solids concentration is 37 mg/L. The effluent suspended solids concentration is 12.0 mg/L. The sludge solids content is 1.00% and the specific gravity of sludge solids is 3.01. What volume of sludge must be disposed of each day?
Alum
Q = 0.5 m /L = 500 L/s
IN1 = 23 mg/L
SS1 Out1 = 12 mg/L SS2
Suspended Solid
Out2 = 48 mg/L
IN2 = 37 mg/L
IN1 = Inlet 1 IN2 = Inlet 2 Out1 = Outlet 1 Out2 = Outlet 2
a) Concentration of Outlet 2 ( In = Out In1 + In2 = Out1 + Out2 23 mg/L + 37 mg/L = 12 mg/L + Out2 Out2 = 48 mg/L b) Mass Flowrate of Outlet 2 (Out2):
= 48
x 500
= 24000 c) Sludge Disposed in 1 day:
= 24000
x
x
x