In a water treatment plant, after coagulation and flocculation in a flash mixing tank, slurry is containing fine suspended particles is pumped to a rectangular sedimentation basin at flow rate of 30 ML/d. The particle density is known to be 1200 kg/m³ and mean diameter is 200 micron. Volume fraction of particles in water is measured to be ~ 10%. What minimum basin area is required to ensure that particle concentration in the water steam leaving the basin is minimal?

Following data are available:

In a water treatment plant, after coagulation and flocculation in a flash mixing tank, slurry is containing fine suspended particles is pumped to a rectangular sedimentation basin at flow rate of 30 ML/d. The particle density is known to be 1200 kg/m³ and mean diameter is 200 micron. Volume fraction of particles in water is measured to be ~ 10%. What minimum basin area is required to ensure that particle concentration in the water steam leaving the basin is minimal?

data available:

water density = 1000 kg/m³, water viscosity =0.001 Pa.s, solid density = 1100 kg/m³.

Mixture density =100/((x_w/ )+ (100x_w)/) where xw = solid conc. (wt%).

Mixture viscosity =(1+2.5+14.1²) where = solid volume fraction.

water density = 1000 kg/m³, water viscosity =0.001 Pa.s, solid density = 1100 kg/m³.

Mixture density =100/((x_w/ )+ (100x_w)/) where xw = solid conc. (wt%).

Mixture viscosity =(1+2.5+14.1²) where = solid volume fraction.