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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 the difference between counter flow and parallel flow Heat exchange. Classify Heat exchange on the basis of constructional features and design.
Q. Stacking in the Applicators storage? Stacking in the Applicator's storage yard shall be in accordance with good safety practices and/or OWNER Specifications. Sufficient spac
Method of resolution to find out the resultant force: Some time there is doubt for finding the angle of resultant (θ), the value of the angle θ will be very depending upon the
ELECTRIC DISCHARGE PHENOMENON The flow of electricity through metallic solids, or through liquid metals is called Conduction. The electricity flow through ionic solutions
Spindle complaint Gear shift : Check spindle comp. Gear shift for bend, rust, arms for bend and arm spring condition and availability.
Use s of Carnot Cycle: 1. It helping us to appreciate what factors is desirable in the design of practical cycle; namely a maximum possible temperature range. 1 maximum p
Q. What is the procedure of hot working? A process is defined as hot working if it takes place when the workpiece is above the recrystallization temperature. Hot Working Ad
Determine elongation because of self weight of tapering rod: Sol.: Take a tapering rod hung vertically and firmly fixed at top position. The rod is of length L tapers unifor
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Type of strain: There are basically four type of strain 1. Tensile strain 2. Compressive strain 3. Volumetric strain 4. Shear strain
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