Coagulation-flocculation-sedimentation, Mechanical Engineering

Assignment Help:

2. Assume that the river has been selected as the source of raw water for the 2.0mgd demand.

a. Surface water has low alkalinity, high turbidity. The distribution system is cast iron pipe. What's the concern with using alum (Al2(SO4)3) as the coagulant. What other chemical could be used?

b. A slow sand filter will follow the coagulation-flocculation-sedimentation. The organic content in the raw water supports a biofilm on the filter surface. How might this reduce the disinfectant dosage? What text Figure shows this?

c. The 4' thick filters run q=500 gpd/ft2. Find the total area of filter surface required to treat the 2.0 mgd. Also compute the hydraulic residence time in the filter.

d. The filtered water still has traces of ammonia and dissolved organics. Calcium hypochlorite Ca(OCl)2 is used for disinfection. What's the advantage, what's the potential problem with using the hypochlorite rather than using ultraviolet (UV)?


Related Discussions:- Coagulation-flocculation-sedimentation

Explain the working and construction of universal joint, (a) Describe clear...

(a) Describe clearly the constructional details and operation of various rear axle drives with the engine placed at the front. Illustrate your answer with simple and neat sketch.

Define 3-d lathe tool dynamometer, Define 3-D lathe Tool Dynamometer It...

Define 3-D lathe Tool Dynamometer It is possible to measure three dimensional cutting tool component with the help of 3-D lathe tool dynamometer. In spite of that we are gone f

What is suspension system? , (a) What is suspension system? Write down its ...

(a) What is suspension system? Write down its functions. (b) What are the types of suspension system? Write the names of suspension system used in front and rear of two wheelers

Equivalent force f - mechanics, If Equivalent force F and F acting on rigid...

If Equivalent force F and F acting on rigid body are not in line Sol.: If equivalent force of same magnitude 'F' acting on the rigid body are not in line, then there is no c

Explain commutator- dc generator, Commutator The function of a commutat...

Commutator The function of a commutator is to change alternating current induced in the armature into unidirectional current. The commutator is of cylindrical shape and is made

Design layout of storage tanks in plant, Q. Design layout of Storage Tanks ...

Q. Design layout of Storage Tanks in plant? Generally, tanks taking up large areas of the plot are located off-site and storage tanks containing the same product grouped togeth

Calculate the greatest stress - plate, Calculate the greatest stress - plat...

Calculate the greatest stress - plate: A rectangular plate 10 mm thick within a hole of 50 mm diameter drilled on this is as shown in Figure 10. This is subjected to axial pul

Hill roads - road under special conditions, Hill Roads: Alignment ...

Hill Roads: Alignment Selection and Geometric Design Standards Here, you have already learnt how an alignment of a hill road has to be selected. The selection of a g

Explain about master stick file, Q. Explain about Master Stick File? Th...

Q. Explain about Master Stick File? The Master Stick File is an up-to-date version of the P&IDs; it is not to be used as a check print by any discipline. Miscellaneous comment

Arc blow, ARC BLOW In certain cases depending upon where the return pa...

ARC BLOW In certain cases depending upon where the return path connections are given for the arc current, the arc may be deflected towards a direction of weaker electro magnet

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