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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)?
how water turbine workes
(a) How is specific gravity of electrolyte (battery water) measured and what should be the value of specific gravity? (b) How would you measure battery voltage and what is its reco
The hardened layer depth is the measure of harden-ability. A good harden-ability will sense even thicker sections are uniformly hardened. Conversely a poor harden-ability will gene
Resultant of coplanar concurrent force system: The resultant force, of given system of forces can be found out by the resolution method, which is discussed below: Assume th
A rigid bar ABCD is hinged at A and supported by a bronze rod, 2m long, and a steel rod 1m long as shown in figure A load of 80 KN is applied at end B. Determine the stresses in ea
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Identify the basic activities involved in the use of intermittent operation in handling machines in material handling?
Convert the flow-rate from Am3/h to Sm3/h Consider a compressor (model ABC-Z4). The compressor has a suction pressure of 3 barg, and a discharge pressure of 6 barg. The inlet
Calculate values of KI - thick cylinder: If cracks of 6 mm and 12 mm length are separately present only one side of inner surface in radial direction find two values of KI.
the component of computer integrated manufacturing with the diagram
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