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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)?
where expendable pattern is used?
(a) Calculate the unit step time response for a system with pulse transfer function (b) Calculate the pulse transfer function of a unity feedback discrete time system with
(a) Derive an expression for the otto cycle to determine the Mean Effective Pressure and efficiency. (b)The two engines are to perform on diesel and otto cycle with the followin
what is the positive opportunities for this major
Disc clutch friction thickness: Check disc clutch friction thickness which should be minimum of 2.6 mm.
Torsion equation derivation
Draw schematic diagram of a position control system using armature controlled DC Servo motor. Graph the signal flow graph and hence calculate the closed loop transfer function.
what is the difference between mineral and vegetable oils in terms of oiliness and oxidization?
AskThe spring controlled governor of the Hartung type has two rotating masses each of 2.5 kg and the limits of their radius of rotation are 100 mm and 125 mm. The each mass is dire
This lab sheet is designed to guide students through the experimentation they will need to conduct in order to complete the continual assessment element of their NG3H235 studies.Th
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