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

Water treatment, The transmission main from the well field to the community...

The transmission main from the well field to the community is 2500 ft, the velocity of flow at peak pumping capacity is 3.5 fps, water temperature is 10oC, and pH is 7.5. If free c

What is tendonand describe its working, What is Tendonand describe its work...

What is Tendonand describe its working It is a steel element, such as a wire, cable, bar or strand which is provided, in a stretched form, to impart prestressing force in con

Arches, construction of arches

construction of arches

Check rail on curve, Check Rail on Curve - Check Rails are basically p...

Check Rail on Curve - Check Rails are basically provided on sharp curves to reduce the lateral wear on the outer rail. They also prevent the outer wheel flange from mounting o

Find the maximum stress, Find the maximum stress: A circular bar rigid...

Find the maximum stress: A circular bar rigidly fixed at both ends is 1 m long and tapers uniformly from 20 cm diameter at one end to 10 cm diameter at the other end. Find the

School building, from surveying to school building finish

from surveying to school building finish

What is the correct value of the specific gravity, In a specific gravity te...

In a specific gravity test, 1.17 N of oven-dired soil was taken. The weight of pyknometer, soil and water was obtained as 6.51 N. The weight of pyknometer full of water alone was 5

Explain the term - untensioned reinforcement, Explain the term - Untensione...

Explain the term - Untensioned Reinforcement In prestressed concrete construction, use of untensioned reinforcement also has to be made alongwith tendons. This is essential as

Explain measured shovel packing, Explain Measured shovel Packing Measu...

Explain Measured shovel Packing Measured shovel Packing essentially consists of accurate measurements of track defects particularly the unevenness and voids caused in the cour

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