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

Castigiliano theorem, how I can do with matlab to solve problems by this th...

how I can do with matlab to solve problems by this theorm

Carnot cycle, matlab programme for carnot cycle

matlab programme for carnot cycle

Open and closed position of the armature and flux linkage, Q.   For an elec...

Q.   For an electromagnetic system, show that the energy stored in a magnetic field is equal to the area enclosed b/w magnetization curves for open and closed position of the armat

What are relevant design considerations, What are relevant design considera...

What are relevant design considerations? The relevant design considerations may be summarized as follows: a. Main reinforcement (uniformly distributed) is placed in a longit

Method of least square to fit a curve, a) The voltage v across a capacitor ...

a) The voltage v across a capacitor at time t seconds is given by the following table   t: 0 2 4 6 8   v: 150 63 28 12 5.6 Use the method of least square to fit a curve of

Rapid prototyping, Give justification toward the development of rapid proto...

Give justification toward the development of rapid prototyping?

English, what is law of gearing

what is law of gearing

Design a transition diagram, 1. Given the following grammar S à 0A0 | 1B1 |...

1. Given the following grammar S à 0A0 | 1B1 | BB; A à C; B à S | A; C à S | ε, (a) ( Derivation ) Given a left-most and right-most derivation of a string 01001110 (b) ( Parse tree

Welding, difference between blow hole and porosity

difference between blow hole and porosity

Shear moment, Calculate and draw the Shear force and Bending moment diagram...

Calculate and draw the Shear force and Bending moment diagrams for the loaded beam and determine the maximum moment M and its location x from left end.

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