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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)?
Occupational Safety - Industrial Safety The bad and most debilitating experience related to work which a worker can have is a work-related accident or illness. Within the effe
Let B be the number of bicycles formed from F bicycle frames and T tires. Each bicycle require exactly two tires and one frame. a. Sketch the isoquants for bicycle production.
Cooling System: A cooling system is designed to remove a part of heat generated inside the cylinder that may be harmful to engine parts. The heat is produced in the engine cylinde
in orthographic projection why in quadrant is taken in anticlock wise
Find out the forces in the members of the tower: Find out the forces in the members of the tower. Solution By symmetry, ∠ AFG = ∠ AGF = θ and HG = 7.5 m; while AH = 3
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I have an assignment and i want you to do it for me
A load cell based on a simply-supported beam with rectangular cross-section is shown below. The beam is made using a tool steel alloy with E = 200 GPa, ν = 0.285. Two strain gages
Calculate the weight of body and the coefficient of friction: Q: Bodies resting on rough horizontal plane required pull of 24N inclined at 30º to the plane just to move it. I
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