A settling tank has a surface area of 200 m? and inflow rate of 30 m/day. What is the percentage of removal of the particles that have a diameter of 0.04 mm and mass density of 1200 kg/m, if water density is 998 kg/m and water absolute viscosity is 1.0087 x 10 N.s/m².
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A: specific gravity=ρPρw=1200998=1.20vs=ρwG-1d218μvs=9981.2-1×1.6×10-918×1.0087×10-3×9.81=0.000172m/sec
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- A settling tank having a depth of 3.5m and surface area of 1000m^2 is used to remove particle of size 0.01mm and specific gravity of 2.6 . Calculate the removel percentage of the tank for the discharge of 7000m^3 per/day. Take viscosity of water as a 1.1×10^-3 kg/ms.Gave wrong values earlier. These are the correct values A settling tank having a depth of 3.5 m and surface area of 1000 m2 is used to remove particles of size 0.01 mm and specific gravity of 2.6. Calculate the removal percentage of the tank for the discharge of 7000 m3/d. Take viscosity of water as 1.1x10-3 kg/m.s.Flow velocity of water 1.25 cm/sec is observed in a continuous flow settling tank 4.5 m deep and 60 m long. The diameter of the particles of specific gravity 2.65 that may be effectively removed is (Assume temperature is 25°C and kinematic viscosity of water v = 0.01 cm2/s).
- A water treatment plant has asedimentation basin of depth 3 m, width5 m, and length 40m. The water inflowWrate is 500 m^3/h. Find the removal fractionof particles having a settling velocityof 1.0 m/h. (Consider the particle density as 2650kg/m^3 and liquid density as 991 kg/m^3)In a continuous flow settling tank, 3.5 m deep and 65 m long, if the flow velocity of water observed is 1.22 cm/s. what size of the particles of specific gravity 2.65 may be effectively removed? Assume temperature 25°C and kinematic viscosity of water as 0.01 cm²/s.Suspended particles at a depth of 3 m are to be removed from water flowing at the rate of 250 m³/day. Determine the required diameter of the settling tank for an overflow rate of 20 m/day.
- You are trying to remove 10.0 μm diameter particles in a water treatment plant, so you design a settling basin. The water is at 20 ̊C (giving a water density of 998.2 kg/m3, but really you can assume 1000 kg/m3 here), and the particle density is 1.2 g/mL. The plant treats 0.100 m3/s of water. It is proposed to use a 3.5 m deep, rectangular sedimentation tank with a length to width ration of 5:1. What is the minimum required width of the basin?A settling tank (32 m long, 2.1 m across and 1.6 m deep) is used to clarify water containing particles with a diameter of 120 µm. The density of the particles is 2.5 g/cm3 and the dynamic viscosity of water is 1.3 x 10-2 g/cm.sec. What is the maximum flow rate that can be allowed to make sure all the particles settle in the tank?To clarify water containing particles with a diameter of 120 m, a settling tank (32 m long, 2.1 m across, and 1.6 m deep) is used. The particle density is 2.5 g/cm3, and the dynamic viscosity of water is 1.3 x 10-2 g/cm.sec. What is the highest flow rate that can be tolerated to ensure that all particles settle in the tank?
- A 15 μm clay mineral particle has terminal settling velocity of 0.202 mm with a density of 2.65 g / cm3 in 20 ˚C water.a. Would these particles be completely removed in a rectangular settling basin that has a 10-m width, a 30-m length and a 4-m depth given a flow rate of 2 MGD (million gallons day).b. What is the smallest diameter clay mineral particle that can be removed in the settling basin for the conditions above?c. What is the smallest diameter clay mineral particle that can be removed in the settling basin for winter conditions when the water temp is 5 ˚CSedimentation tank is used for a flow rate of 0.2 m3/s and has dimesions 32x8x4 m. The density of the particles = 2.5 g/cm3, density of water = 1 g/cm3, and the dynamic viscosity of water = 0.01 g/(cm.s). Determine the removal efficiency if the diameter of the particles is 25 um.Given:Flow rate of water = 500 L/minSuspended solids concentration in influent water = 100 mg/LRequired effluent suspended solids concentration = 10 mg/LFiltration rate = 10 m^3/m^2/hrFiltration tank dimensions: Length = 5 m, Width = 3 m, Depth = 4 mCalculate:o Calculate the total suspended solids (TSS) load in the influent water:o Calculate the filtration tank surface area:o Calculate the required filtration tank capacity:o Calculate the required detention time in the filtration tank: Q2) DisinfectionGiven:Flow rate of water = 2000 m^3/hChlorine residual required in effluent = 0.5 mg/LInitial chlorine concentration in influent water = 2 mg/LChlorine decay rate in disinfection tank = 0.05 per hourDisinfection tank volume = 300 m^3Calculate:o Calculate the chlorine demand in the influent water:o Calculate the chlorine dosage required:o Calculate the chlorine dosage rate:o Calculate the actual chlorine dosage rate considering chlorine decay: