One way of characterizing particles in water is to measure their sedimentation velocity. A given particle...
One way of characterizing particles in water is to measure their sedimentation velocity. A given particle is observed to have a terminal settling velocity of 0.04 m/s in water at room temperature. If the particle diameter is measured to be 0.015 cm (perhaps by microscopic estimation), determine the density of the particle. You may assume the particle is spherical.
Homework Answers
Add Answer to:
One way of characterizing particles in water is to measure their
sedimentation velocity. A given particle...
One way of characterizing particles in water is to measure their sedimentation velocity. A given particle...
One way of characterizing particles in water is to measure their sedimentation velocity. A given particle is observed to have a terminal settling velocity of 0.04 m/s in water at room temperature. If the particle diameter is measured to be 0.015 cm (perhaps by microscopic estimation), determine the density of the particle. You may assume the particle is spherical.
A sedimentation tank is used for the settling of a suspension of uniform particles of glass...
A sedimentation tank is used for the settling of a suspension of uniform particles of glass in liquid water. It was found that the relation between the observed sedimentation velocity of particles Uc and the fractional volumetric concertation of particles C is given by the following equation: uc u -=(1-C) 4.8 where U, is the free settling velocity of an individual solid particle. Note that the volumetric rate of sedimentation (settling) per unit area or flux is equal to the...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time ~ 2 h) for a new water treatment plant (flow rate: 0.04 m/s; temperature: 20 ). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Particle diameter (m) Particle density (kg/m) Percentile 50 1.4 x 10...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time ~ 2 h) for a new water treatment plant (flow rate: 0.04 m3/s; temperature: 20 ℃). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Particle diameter (μm) Particle density (kg/m3) Percentile ≥ 50 ≥ 1.4...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time ~ 2 h) for a new water treatment plant (flow rate: 0.04 m3/s; temperature: 20 ℃). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Particle diameter (m) Particle density (kg/m3) Percentile 50 1.4 x 103...
Problem 2 (20 points) You are hired to design a rectangular sedimentation tank (length to width...
Problem 2 (20 points) You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time 2 h) for a new water treatment plant (flow rate: 0.04 m/s; temperature: 20 °C). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Percentile Particle diameter (um) > 50 > 60...
2. Comparing sedimentation and flotation um spherical floc particles with a density of 1.15 g/cm3 pm...
2. Comparing sedimentation and flotation um spherical floc particles with a density of 1.15 g/cm3 pm spherical floc particles with a density of 1.15 g/cm Calculate the settling velocity of 12 in summer (T-20°C) and in winter (T 4°C). Calculate the rise velocity of the same floc particle after the attachment of a single air bubble of 40 um diameter for the same two temperatures. The density of air is 1.27 kg/m3 at 4°C and 1.19 kg/m3 at 20°C Comment...
Stokes' law describes sedimentation of particles in liquids and can be used to measure viscosity. Particles...
Stokes' law describes sedimentation of particles in liquids and can be used to measure viscosity. Particles in liquids achieve terminal velocity quickly. One can measure the time it takes for a particle to fall a certain distance and then use Stokes' law to calculate the viscosity of the liquid. Suppose a steel ball bearing (density 7.8 x 103 kg/m3, diameter 2.0 mm) is dropped in a container of motor oil. It takes 11 s to fall a distance of 0.65...
Stokes' law describes sedimentation of particles in liquids and can be used to measure viscosity. Particles...
Stokes' law describes sedimentation of particles in liquids and can be used to measure viscosity. Particles in liquids achieve terminal velocity quickly. One can measure the time it takes for a particle to fall a certain distance and then use Stokes' law to calculate the viscosity of the liquid. Suppose a steel ball bearing (density 7.8 ✕ 103 kg/m3, diameter 3.2 mm) is dropped in a container of motor oil. It takes 11 s to fall a distance of 0.45...
Please explain selection of answer in #1 Sedimentation A town is designing a rectangular, 4m deep...
Please explain selection of answer in #1
Sedimentation A town is designing a rectangular, 4m deep settling tank for treating surface water intake. The tank will have a flow velocity of 5 cm/s. The untreated water has particles with the following properties: d=0.025 mm and density of 2,650 kg m 3 The settler is placed following a coagulation-flocculation step which is able to do one of the following: a) Triple the diameter of the particles but have no impact on...
A sedimentation tank is used for the settling of a suspension of uniform particles of glass in liquid water. It was found that the relation between the observed sedimentation velocity of particles Uc and the fractional volumetric concertation of particles C is given by the following equation: uc u -=(1-C) 4.8 where U, is the free settling velocity of an individual solid particle. Note that the volumetric rate of sedimentation (settling) per unit area or flux is equal to the...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time ~ 2 h) for a new water treatment plant (flow rate: 0.04 m/s; temperature: 20 ). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Particle diameter (m) Particle density (kg/m) Percentile 50 1.4 x 10...
Problem 2 (20 points) You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time 2 h) for a new water treatment plant (flow rate: 0.04 m/s; temperature: 20 °C). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Percentile Particle diameter (um) > 50 > 60...
2. Comparing sedimentation and flotation um spherical floc particles with a density of 1.15 g/cm3 pm spherical floc particles with a density of 1.15 g/cm Calculate the settling velocity of 12 in summer (T-20°C) and in winter (T 4°C). Calculate the rise velocity of the same floc particle after the attachment of a single air bubble of 40 um diameter for the same two temperatures. The density of air is 1.27 kg/m3 at 4°C and 1.19 kg/m3 at 20°C Comment...
Stokes' law describes sedimentation of particles in liquids and can be used to measure viscosity. Particles in liquids achieve terminal velocity quickly. One can measure the time it takes for a particle to fall a certain distance and then use Stokes' law to calculate the viscosity of the liquid. Suppose a steel ball bearing (density 7.8 x 103 kg/m3, diameter 2.0 mm) is dropped in a container of motor oil. It takes 11 s to fall a distance of 0.65...
Please explain selection of answer in #1
Sedimentation A town is designing a rectangular, 4m deep settling tank for treating surface water intake. The tank will have a flow velocity of 5 cm/s. The untreated water has particles with the following properties: d=0.025 mm and density of 2,650 kg m 3 The settler is placed following a coagulation-flocculation step which is able to do one of the following: a) Triple the diameter of the particles but have no impact on...
Most questions answered within 3 hours.
-
Write a C++ program that will convert distance measurements from
miles to kilometers. Specifically, the program...
asked 2 minutes ago -
Given the following stresses (in MP a); in each case:
(a) Find the principal stresses σ1;...
asked 6 minutes ago -
You are one of the first engineers hired into the
manufacturing engineering department at a brand...
asked 12 minutes ago -
Suppose car models A, B, and C are popular among drivers.
Suppose 12% of the drivers...
asked 29 minutes ago -
write a program that finds the number of zeros in an 8-bit data
item using assembly...
asked 29 minutes ago -
Which statement is always true: The total energy of a closed
system...
A) is always equally...
asked 43 minutes ago -
find the critical value associated with a right sided hypothesis of
the mean using a sample...
asked 2 hours ago -
Which of the following statements is true with respect to a
simple linear regression model?
a....
asked 3 hours ago -
The energy required to remove an electron from a surface of a
solid element is called...
asked 4 hours ago -
How would you train your employees to avoid risks of using
mobile devices?
asked 5 hours ago -
Assume Kw = 1.01 ✕ 10−14
For pure water, we can calculate [H3O+ ] = [OH...
asked 6 hours ago -
Suppose that on a temperature scale X, water boils at 203.0°X
and freezes at -105.7°X. What...
asked 6 hours ago