A highly turbid water at 20⁰C is to be treated in a sedimentation (gravitational settling) tank with a water depth of 3 m. The suspended particles have an average diameter of 0.03 mm and a density of 1.55 g/cm3 and the particles are fully suspended in water initially. Disregard the initial period during which the particles accelerate to their terminal velocity and assume Stokes law is applicable. Estimate: a) How long the suspended particles will take (min) to fully settle at the bottom of the sedimentation tank. b) If the sedimentation tank has to be designed to fully settle the particles in 1 hour, what should be the height (m) of the water level in the sedimentation tank

Q: Z=0 Water Table Steady State Recharge 4.1 m Ground Surface 0 z (meters) 11 K (meters/day) 0.5 K(z) =…

A: Given data:Hydraulic conductivity, k(z)=0.5+0.03zPorosity, n=0.23Depth of unconfined aquifer=-11mWe…

Q: 1 The lower the water turbidity, the higher the allowable scour velocity in sedimentation tank.( ) 2…

A: 1 True - Lower water turbidity allows for higher allowable scour velocity as the particles in the…

Q: Estimate the teminal settling velocity in water at a temperature of 15 °C of spherical silicon…

A:

Q: A container of Atrazine (500 g) is dumped into a river 2.3 km upstream of a municipal water intake…

A: Given, M = 500 gm or 0.5 kg L = 2.3 km or 2300 m  A = 5.7 m2  Q = 8.25 m3/s D = 0.1 m2/s

Q: 6. The pH of the water is measured as 9.3 and the total concentration of carbonate species is found…

A:

Q: The infiltration capacity of a soil follows the Horton's exponential model f = c₁ + C₂ e-kt. During…

A:

Q: How would 20 g of atrazine be distributed between a water and sediment layer in a ditch that is 50 m…

A: To solve this problem, we need to calculate the volume of water and sediment in the ditch, and then…

Q: Assume a clay liner witht the following properties and conditions:thickness, L = 0.6m, seepage…

A: Data given: Thickness L = 0.6 m Seepage velocity, Vs = 3.0 x 10-7 cm/s The effective diffusion…

Q: Which of the following represents a sketch of terminal speed vs. viscosity of the liquid for…

A: Option (c) is correct  As terminal velocity VT is inversely proportional to √viscosity which…

Q: In order to clarify water containing particles with a diameter of 120 µm, what is used is a settling…

A:

Q: Consider a primary sedimentation tank (PST) in a water treatment plant with Surface Overflow Rate…

A: Please refer the attached image for complete solution. THANK YOU.

Q: In a constant head permeability test, if the discharge coming out of the sample is 0.35 cm³/s find…

A: Discharge Q=0.35 cm3/sLength L=30 cm,Area A=250 cm2Head loss per unit length i = 0.25Coefficient of…

Q: b. Based on concentration and the tendency of particles to interact, particle settling in a water or…

A: Note- Hi! Thank you for the question, As per the honor code, we are allowed to answer three…

Q: In a constant head permeability test, if the discharge coming out of the sample is 0.35 cm³/s find…

A: Discharge Q=0.35 cm3/sLength L=30 cm,Area A=250 cm2Head loss per unit length i = 0.25Coefficient of…

Q: Flow velocity of water 1.25 cm/sec is observed in a continuous flow settling tank 4.5 m deep and 60…

A:

Q: Determine the efficiency of removing particles of size 50 μm and density 1,100 kg/m², settling in a…

A: Particles size, d = 50 μm or 50 x 10-6 m Density of particle,  = 1,100 kg/m²Length = 10 m .Flowrate,…

Time and time related variables in engineering

Time is the event progression starting from past to present and then, future statistically. The time-related variable is any particular value in relation to time to assess its changes on a specified (XY) plane.