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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)?
The Classical Job Shop Scheduling Problem (Jsp) A job shop scheduling problem occupies the determination of beginning time for all operations in a finite and specif
It is a 3-D drawing used by draftsmen, architects etc
Cam This is a mechanical member that imparts motion to another member called follower. Illustration: A cam is rotating at regular speed of 1200 rpm in the clockwise d
Q. Describe about consumable electrode? This type of electrode is prepared from metal. Its one end is kept in electrode holder and then electric supply is passed through it. Th
BOILERS: BOILERS : Boilers can be defined as closed pressure vessels that are used to generate steam at pressure much higher than atmospheric pressure by the transfer of he
how when gear changes speed is ups
Initial Graphics Exchange Specifications (IGES) The basic concept of IGES is concerned with the exchange of product description data from one CAD system to another one. The CAD
Is it possible for the steady state temperature profile in a plane wall to be nonlinear at steady state? If yes, provide one example. Solution: Steady state temperature profile
I have homework needs to be solved anyone able to help there ?
(a) What do you mean by vibration and the terminology used in it to be defined? (b) A body is subjected to two Harmonic motions as provided below x 1 = 10 sin (wt + π/6) and x
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