Use the Rose Equation and then the Carmen-Kozeny Equation to: Calculate the backwash head loss for a flowrate of 20 mL/s through a clean filter with a face area of 6 cm, a depth of sand media of 0.1 m, and a bed porosity of 0.4. The filter is built with Sieve 60 sand (passed through 40 and retained in 60). Assume the properties of water at 25 °C are: Viscosity, µ= 9.13E-04 kg/m.s, Density, pw = 997.2 kg/m³, and the gravitational constant, g = 9.81 m/s?

Use the Rose Equation and then the Carmen-Kozeny Equation to: Calculate the backwash head loss for a flowrate of 20 mL/s through a clean filter with a face area of 6 cm, a depth of sand media of 0.1 m, and a bed porosity of 0.4. The filter is built with Sieve 60 sand (passed through 40 and retained in 60). Assume the properties of water at 25 °C are: Viscosity, µ= 9.13E-04 kg/m.s, Density, pw = 997.2 kg/m³, and the gravitational constant, g = 9.81 m/s?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

please solve for the total evaporable moisture, absorption, & surface moisture content. thank you!!
You are designing a 20 mgd wastewater treatment plant. To characterize the plant's influent solids, the lab used 90 ml samples of the ty[ical wastewater and the following equipment: Lab Equipment Evaporation Dish Gooch crucible 2.0-micron paper filter 2.0-micron Whatman GF/C filter Lab Measurement Dish + Residue after evaporation Weight 54.2830g 54.2170g 1.5240g 1.6948g 54.349g
A gravity rapid sand filter with an effective size of 0.55 mm and a uniformity coefficient is 1.2 designed for a water treatment plant of 8000 m³/day at a filtration rate of 120m/day and should not exceed 240 m/day when two filters being backwashed. Determine the following: a) The number and dimension of each filter (L=1.4W). b) The required velocity of wash water required for expanding sand. c) The amount of water required to backwash two filter units for 5 min.
Solve the Surface moisture content and Total evaporable moisture contenta) Mass of container, Mc = 35 grams.b) Mass of container + original sample, Mc + w = 520 grams.c) Mass of container + dried sample, Mc + D = 472 grams.d) Mass of original sample, W = 485 grams.e) Mass of dried sample, D = 437 grams.
Wastewater Engineering civil engineering (10)
Determine the head loss for a clean filter bed using the Carman-Kozeny equation for a stratified bed with uniform porosity of 0.40. The rapid sand filter is made up of a 760 mm deep bed of sand, specific gravity of 2.65, shape factor (4) = 0.80, temperature of 10°C, and filtration rate of 1.70 liters per second per square meter (Lpsm²). A sieve analysis is presented below. Sieve # (1) 14-20 20-28 28-32 32-35 35-42 42-48 48-60 60-65 65-100 % Sand retained (Xij) (2) 0.44 14.33 43.22 27.07 9.76 4.22 0.54 0.29 0.13 100 dij (m x 10-4) (3) 10.0060 7.111 5.422 4.572 3.834 3.225 2.707 2.274 1.777
Water treatment plant : SOR = 0.35 mm/sec; The analysis of this water found that there are 6 different particle sizes: 0.1 mm with settling velocity of 0.2 mm/sec; and percentage of particles = 10 %; 0.2 mm with settling velocity of 0.25 mm/sec; and percentage of particles = 20 %; 0.3 mm with settling velocity of 0.3 mm/sec; and percentage of particles = 15 %; 0.4 mm with settling velocity of 0.35 mm/sec; and percentage of particles = 5 %; 0.5 mm with settling velocity of 0.4 mm/sec; and percentage of particles = 30 %; 0.6 mm with settling velocity of 0.5 mm/sec; and percentage of particles = 20 %; Calculate the efficiency of this tank ?
A synthetic sample of water is prepared by adding 100 mg Kaolinite (a clay mineral), 200 mg glucose, 168 mg NaCl, 120 mg MgSO4, and 111 mg CaCl₂ to 1 liter of pure water. The concentrations of total solids (TS) and fixed dissolved solids (FDS) respectively in the solution in rug/L are equal to A 699 and 599 B с D 599 and 399 699 and 199 699 and 399
1.3, tank width -8 m, the moisture content of the sludge is 95% and the concentration of suspended A rectangular sedimentation tank removes 80% of 0.06 mm diameter particles with SG= solids in the effluent flow is 200 mg/L, detention time 2 hrs for discharge 15000 m³/day. Determine the following: a) Dimension of the tank. Surface over flow rate b) Maximum horizontal velocities keep particles in settling d) The depth of sludge in the basin if its cleaning is daily
The bed thickness of a speed sand filter is 1.3 m. A sand with a specific diameter of 0.8 mm and a specific gravity of 2600 kg / m3 will be used as filter material. The shape factor of the sand is 0.9 and the porosity of the clean bed is 0.45. The water layer thickness on the bed is 1.1 m. Average filtration speed is 130 m / day and maximum filtration speed is 180 m / day. The maximum flow rate is 24087 m3 / day and the kinematic viscosity of water is 1.01x10-6 m2 / sec. The maximum head loss in the filter is required to be 1.9 m and negative pressure is not allowed. a) Find the initial head loss of the filter bed. b) Find the required number of filters and the area of each filter in case 3 filters are in reserve. c) Calculate how many meters depth the pollution penetrates at the end of filtration.
A plain sedimentation tank with a length of 20m, width of 10m, and a depth of 3m is used in a water treatment plant to treat 4 million litres of water per day (4 MLD). The average temperature of water is 20 °C. The dynamic viscosity of water is 1.002 x 10-3 N.s/m² at 20 O ° C. Density of water is 998.2 kg/M³. Average specific gravity of particles is 2.65. What is the minimum diameter of the particle which can be removed with 100% efficiency in the above sedimentation tank?
1. The following information is provided for an activated sludge system design: Parameter Symbol Value Units Flow rate Q 10000 m³/d Influent BOD So 150 mg/L Effluent BOD S 2 mg/L Hydraulic residence time Ꮎ 4 hr Mean cell residence time Oc 6 d Maximum specific growth rate μm 3 1/d Half saturation constant Ks 40 mg/L Yield coefficient Y 0.5 Endogenous decay coefficient b 0.08 1/d Death rate coefficient γ 0.04 1/d Determine: a) The aeration tank biomass concentration (X) in mg/L b) The aeration tank oxygen requirement in kg/d c) The rate of biomass wasting in kg/d