A dual media filter contains 0.4 m of sand with effective size 0.55 mm and 1.4 m of anthracite witheffective size 1.2 mm. The sand and anthracite have density of 2650 kg/m³ and 1700 kg/m³,respectively. The filtration rate is 10 m/h, and the design temperature is 10 C (p = 999.7=kg/m³, 1.31 x 103 kg/m-s). Determine the head loss (m) through the filter. Use the Ergunequation and the midpoint Ergun parameters for sand (ky = 112, k; = 2.2, & = 0.42) and anthracite (ky228, k; 4.4, & 50%).B

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Answered: A dual media filter contains 0.4 m of…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A dual media filter is composed of 0.30 m anthracite (mean particle size 0.20 mm) that is placed over a 0.60 m layer of sand (mean particle size 0.70 mm) with a filtration rate of 9.78 m/h. Assume the grains sphericity ф = 0.75 and porosity (ε) = 0.40. Estimate the head loss in the clean filter?
A dual media filter contains 0.4 m of sand with effective size 0.55 mm and 1.4 m of anthracite with effective size 1.2 mm. The sand and anthracite have density of 2650 kg/m³ and 1700 kg/m³, respectively. Determine if the media in the filter are properly matched. O Yes, the media are properly matched. O No, the media are not properly matched. O Cannot be determined using the given information.
A dual medium filter is composed of 0.3 m anthracite (mean size of 2.0 mm) that is placed over a 0.6 m layer of sand (mean size of 0.7 mm) with filtration rate of 9.78 m/h. Assume the grain sphericity is = 0.75 and a porosity for both is 0.40. Estimate the head loss of the filter at 15oC.
Please design a rapid sand filter that will effectively remove 65% of thesuspended solids in a flow of 10 cubic meters per minute. The suspendedmaterial consists of particles that are perfectly spherical with a diameter of 10microns. Please use sand with an effective size of 1 mm and a porosity of 0.5.You should limit your clean bed head loss to 0.5 meters per meter. (Pease use an attachment efficiency, α of 0.75)Viscosity of water =1.0087x10-3 Ns/m2Density of water =998.23 kg/m3What are the dimensions of this filter (Depth and Surface Area)?
A completely mixed activated sludge process operating at equilibrium is designed to treat 300 MLD of waste water. The influent and effluent BOD are 200 mg/1 and 18 mg/1 respectively If the F M then the hydraulic retention time is A 0.125 day B 4.21 hours C 8.42 hours D 0.225 day = 0.3 and MLSS is 3800 mg/1,
4. I 1 I (mm/hr) = at + 12 where it is accumlated in filtration time (min) use the below Data to estimate Dein fretration rate. after (one) hour. N'ary wiI) (t) min lime (D) Accumlation infiltratim : depth (mm) 30 Yo 150 80 - talles
A water filtration unit is made of uniform-size sand particles of 0.4 mm diameter with a shape factor of 0.84 and specific gravity of 2.55. The depth of the filter bed is 0.70 m and the porosity is 0.35. The filter bed is to be expanded to a porosity of 0.65 by hydraulic backwash. If the terminal settling velocity of sand particles during backwash is 4.5 cm/s, the required backwash velocity is
Example 5.2: - Formation water sample with solids concentrations of calcium (Ca) = = 460 ppm, sulfate (SO4) = 1,400 ppm, and Na plus Cl = 19,000 ppm. %3D Find Equivalent NaCl solution in ppm.
A dual media filter contains 0.4 m of sand with effective size 0.55 mm and 1.4 m of anthracite with effective size 1.2 mm. The sand and anthracite have density of 2650 kg/m3 and 1700 kg/m³, respectively. The filtration rate is 10 m/h, and the design temperature is 10 C (p = 999.7 kg/m³, μ = 1.31 x 10-3 kg/m-s). Determine the head loss (m) through the filter. Use the Ergun equation and the midpoint Ergun parameters for sand (kv = 112, k; = 2.2, ε = 0.42) and anthracite (ky = 228, k; = 4.4, ε = 50%).
Water quality and characteristics discuss: 1. Organoleptic parameters 2. Nitrate 3. Solids
How do you determine the minimum fluidisation velocity for a mono-media sand filter (down flow in wastewater treatment) when the sand media size is 3 mm, the specific gravity of the sand media is 3000 kg/m3, and the media porosity is 0.5?
An amount of Sand weighs 500g in stock condition and 480 g in oven dry condition. If absorption capability of the sand is 1.2%, calculate MC(SSD) for the

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