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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)?
(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
how is the downward force is Mg+S*()
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Determine footing moment analysis for given demonstration. Ans: Assuming effective depth as d, Bending moment M at the face of column M = ((273.60 x 2.80 x (1.40 - 0
I have completed mechanical engineering ..2012 passed out...i need to get job in core companies...how i can get it
What does initial velocity mean?
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Product Data Exchange Specifications (PDES) By 1984, many of these international efforts had produced enough results to be compared, and an international community was preparin
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