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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)?
what is entropy
Describe productivity. How do we calculate the productivity? Enumerate various factors effecting the productivity. Define various ways for the improvement of productivity.
#Our company currently produces the evaporator fins and screen. Production is planned to flow parallel evaporator. In this case we need more information.#
Layout design development is supported by a number of studies and reviews, including: • Hazard identification (HAZID Study) and risk assessments - both qualitative and quantita
Centrifugal air compressor: A centrifugal air compressor delivers 15Kg of air per minute. The outlet and inlet conditions are At inlet: Velocity = 5m/sec, enthalpy = 5KJ
algorithm for clipping
Imperfect Frame - truss: Imperfec t Frame An Imperfect frame is one that does not satisfies relation between numbers of members and number of joints given by equation
hello,my name is mustapha from iran I want design piston engine (structure design cranckshaft ,rod,bearing,...)
What is UPR Novel architecture for complete CAD data exchange, called the Universal Product Representation (UPR).
.what is paradisaical drain
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