A water treatment plant is designed to treat0.25 m/s of turbid water. Rectangularhorizontal flow settling units and rapid sandfiltration units are designed for the followingparameters.Sedimentation Tank :(1) Detention time4 hrs.%3D(2) Over flow rate = 20 m/m2/d%3D(3) Length : Breadth4: 1Filters :(1) Number of filters = 4(2) Rate of filtration = 5 m2/m/hr(3) Backwash rate= 10 Um2/se as= 1A)(4) Length : Breadth = 2: 1(a) Determine the dimensions of the settlingtank(b) Determine the length and breadth of thefilter unit(c) Flow rate in the washwater trough, if twotroughs are provided in each filter(d) Assuming ideal conditions of settling,determine the percentage fraction of solidswith settling velocity 0.1 mm/s, removed insettling tanks.

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A water treatment plant is designed to treat 0.25 m/s of turbid water. Rectangular horizontal flow settling units and rapid sand filtration units are designed for the following parameters. Sedimentation Tank : (1) Detention time 4 hrs. %3D (2) Over flow rate = 20 m3/m2/d (3) Length : Breadth = 4: 1 %3D Filters : (1) Number of filters = 4 %3D (2) Rate of filtration 5 m2/m/hr %3D (3) Backwash rate 10 Um2/s %3D (4) Length : Breadth = 2: 1 %3D le letor (a) Determine the dimensions of the settling tank (b) Determine the length and breadth of the filter unit (c) Flow rate in the washwater trough, if two troughs are provided in each filter (d) Assuming ideal conditions of settling, determine the percentage fraction of solids with settling velocity 0.1 mm/s, removed in settling tanks.

A water treatment plant is designed to treat 0.25 m/s of turbid water. Rectangular horizontal flow settling units and rapid sand filtration units are designed for the following parameters. Sedimentation Tank : (1) Detention time 4 hrs. %3D (2) Over flow rate = 20 m3/m2/d (3) Length : Breadth = 4: 1 %3D Filters : (1) Number of filters = 4 %3D (2) Rate of filtration 5 m2/m/hr %3D (3) Backwash rate 10 Um2/s %3D (4) Length : Breadth = 2: 1 %3D le letor (a) Determine the dimensions of the settling tank (b) Determine the length and breadth of the filter unit (c) Flow rate in the washwater trough, if two troughs are provided in each filter (d) Assuming ideal conditions of settling, determine the percentage fraction of solids with settling velocity 0.1 mm/s, removed in settling tanks.

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) Not only can a filter remove fine chemical flocs remained in the settled water from sedimentation tanks, but also it can remove small size of pathogen like bacteria. True or False B) In an ideal horizontal rectangular sedimentation tank, the over flow rate is a specific settling velocity at which a group of flocs has and these flocs can be 100% removed. True or False
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