Coagulation-flocculation-sedimentation, Mechanical Engineering

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)?

Posted Date: 3/2/2013 6:20:52 AM | Location : United States







Related Discussions:- Coagulation-flocculation-sedimentation, Assignment Help, Ask Question on Coagulation-flocculation-sedimentation, Get Answer, Expert's Help, Coagulation-flocculation-sedimentation Discussions

Write discussion on Coagulation-flocculation-sedimentation
Your posts are moderated
Related Questions
The drawbacks of WFM technique have been overcome Domain While no representation can describe all possible solids, a representation should be able to represent a useful se

what desaster made chemistry

DIFINE AS INERTIA

Properties of Aluminium Alloys: Among the different properties of aluminium alloys given are notable as: (a) Low density as 2.7 gm/cc (b) Elevated electrical and therma

what do u you understand by steady state?

A second order system defined by Where r(t) is a unit step function. Calculate the damping ratio, damped natural frequency, undamped natural frequency, peak overshoot occurs, ri

Method:- Using the two small pipes - Radial Drilling machine First we make a base. Then we attach column to the base. Then show the table atmiddle of the column. Then after we

Find modulus of elasticity of the composite under isostrain: A composite is made of alternate layers of 60% E-glass and 40% epoxy resin. If modulii of elasticity of E-glass an

Which three principal possible in radial drilling machine Between them the plain drill machine, three principal movements are possible in this type of machine, by vertical move

Before installing a bolt, stud or nut, threads shall be examined to ensure that there are no incompletely cut threads in the engagement zone (both internal and external) or burns,