Waste activated sludge can be described as a Newtonian fluid with a kinematic viscosity of 20 x 10 ft/sec. At the same temperature, the kinematic viscosity v of water is 10 ft/sec. The relative roughness of the piping system is 0.001. The pressure drop for flow of water at a Reynolds number of 10' in this piping system was determined to be 1.0 psi. If waste activate

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Q: Gravity thickener analysis and design − a gravity thickener concentrates waste activated sludge…

A: Given Data: The waste activated sludge flow rate is 250,000 gal/day. The suspended solids…

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A: step 1-

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Q: Problem 1. A wastewater sample is examined for its solid contents. The ionic strength (μ) of…

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Q: (a) Determine the size range for the various fractions obtained during settling.

A: particle sizes ranging 1.27 × 10^-2 mm (smallest) to 5.08 × 10^-2 mm (largest)specific gravity of…

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A: wet sludge contains 3% solidFilter rate = 170,000 lb/dayTo calculate the amount of nitrogen (lb/day)…

Q: A WASTEWATER TREATMENT PLANT OPERATING PRIMARY SETTLING TANKS GETS IN INFLOW OF 12.96 MILLION LITRES…

A: Answer We are given Flow rate Q = 12.96 MLD Influent suspended solid concentration Cin = 280 mg/l…

Q: A completely mixed activated sludge plant treats wastewater at a rate of 2,565 m³/d. The influent…

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Q: Plot Xa and S/Sº vs Theta for So= 2000, 200, 20, and 2.

A: Given that :-Required that :-

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A: Following are required explanations :

Q: After conventional filtration, the filtered water with turbidity less than 0.5 NTU, pH =7 and T=5 C…

A: Answer  We need to find log reductionCCo from figure(11.20 a) using 4 Mgd and figure (11.20 b) Let…

Q: A PFR is not meeting effluent requirements so baffles are going to be added to the tank to increase…

A: solution Given data The tank is 12 ft deep, 40 ft wide, and 120 ft long. current HRT is 0.5 d Ci= 9…

Q: Given: Flow rate of water = 500 L/min Suspended solids concentration in influent water = 100 mg/L…

A: As per guidelines, only first question is been solved.

Q: A two litre graduated cylinder was used to determine the Sludge Volume Index (SVI) of an activated…

A: Volume of cylinder: 2 litersSettled volume: 800 mlMLSS concentration =2800 mg/ltTo find SVI of…

Q: 8. The upper portion of an inverted U-tube is filled with oil having a pecific gravity of 0.98. The…

A: Determine the pressure difference (PB - PA).

Q: A groundwater borehole at USM engineering campus contains 3000 mg/L of TDS. The flow is 0.32 m3 /s.…

A: Discharge, Net pressure, Water flux rate coefficient,

Q: 1. A natural water with a flow of 4.0 MGD is to be treated with a commercial-grade alum dosage of 80…

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Q: 12.60 The aeration tank for a completely mixed aeration process is being sized for a design waste-…

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Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.