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### Notes

**CE2354 ENVIRONMENTAL ENGINEERING II**

**CE2304 ENVIRONMENTAL ENGINEERING I**

**CE2258 HYDRAULIC ENGINEERING LAB**

**CE 2042 STORAGE STRUCTURES**

**CE6503 Environmental Engineering**

**CE2355 ENVIRONMENTAL AND IRRIGATION ENGINEERING DRAWING**

**CE2028 GROUND WATER ENGINEERING**

**CE 2031 WATER RESOURCES ENGINEERING**

**CE 2402 ESTIMATION AND QUANTITY SURVEYING**

**CE 2405 COMPUTER AIDED DESIGN & DRAFTING LABORATORY**

## Consider a primary sedimentation tank (PST) in a water treatment plant with Surface Overflow Rate (SOR) of 40 m3 /m2 /d. The diameter of the spherical particle which will have 90 percent theoretical removal efficiency in this tank is _______________ m. Assume that settling velocity of the particles in water is described by Stokes’s Law. - gate civil 2017

Given: Density of water = 1000 kg/m3 ; Density of particle = 2650 kg/m3 ; g = 9.81 m/s2 ; Kinematic viscosity of water (v = 1.10 x 10-6 m 2 /sAsked On2018-05-28 06:15:38 by:deepuckraj

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Answers## Consider a primary sedimentation tank (PST) in a water treatment plant with Surface Overflow Rate (SOR) of 40 m3 /m2 /d. The diameter of the spherical particle which will have 90 percent theoretical removal efficiency in this tank is 20.0 to 24.0 mm. Assume that settling velocity of the particles in water is described by Stokes’s Law.

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