Design a 10 unit rapid sand filter system, Civil Engineering

Assignment Help:

Design a 10 unit rapid sand filter system for a flow of 6.3 MGD with a filtration rate of 2 gpm/sq ft. and an L: W ratio of 1.3.  

Design flow (Q) = 6.3 MGD = 6.3x106

gpd = 4375 gpm

Assume filtration rate of 2 gpm/ft2

 Total filter area required = 4375 gpm/2 gpm/ft2

 = 2187.5 ft2

 Total of 10 filter units (but design is based on 9 filters being in operation and 1 in backwashing).  In a problem you will be trying to match this with the answer

Area required per each filter unit  = 2187.5/9 =  243 ft2

L:W ratio is 1.3  so LW = 1.3WxW = 1.3W2

 = 243   --- this gives W = 13.7 ft and L

= 17.8 ft.


Related Discussions:- Design a 10 unit rapid sand filter system

Dam, how many types of drainage galleries and foundation treatment

how many types of drainage galleries and foundation treatment

Determine the nature of the soil, Determine the nature of the soil A gl...

Determine the nature of the soil A glass cylinder 5 cm internal diameter and with a screen at the bottom was used as a falling head permeameter. The thickness of the sample was

Determine the liquidity index and void ratio of the sample, A piece of clay...

A piece of clay taken from a sampling tube has a wet weight of 1.553 N and volume of 95.3 cm . After drying in an oven for 24 hours at 105°C, its weight is 1.087 N. The liquid and

Normal approximation to compute the probability, Normal approximation to co...

Normal approximation to compute the probability: A lot contains 100 articles of which 10 are defective. The lot is rejected if a random sample of 10 articles drawn from the lo

What is a pressure bulb, What are the basic assumptions in Boussinesq's the...

What are the basic assumptions in Boussinesq's theory of stress distribution in soils? Illustrate the vertical stress distribution on a horizontal plane at a given depth and also t

Deflection, solving problems with their answer

solving problems with their answer

Shrinkage of concrete in prestressed members, Shrinkage of concrete in pres...

Shrinkage of concrete in prestressed members The shrinkage of concrete in prestressed members results in a shortening of ensioned wires and hence contributes to the loss of st

Define factor that is not concerned with schedule control, Schedule control...

Schedule control is concerned with all of the following except: a. Influencing the factors which create schedule changes b. Determining that the schedule has changed c.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd