What is the flow rate in gtt/min that is equivalent to 376 mL/h if the drop factor is 11 gtg/mL? Give the answer rounded to the nearest whole number.
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- Sketch a typical Streeter-Phelps oxygen-sag curve and state the limitations of the Streeter-Phelps equation shown below: k, Lo -kt D= k2 – k -e (b) Wastewater discharges through an outfall into a slow moving river that has a mean velocity of 3 cm/s. After initial mixing, the dissolved oxygen concentration in the river is 9.5 mg/L, and the temperature is 20°C. The ultimate BOD of the mixed river water is 30 mg/L, the rate constant for BOD at 20°C is 0.48 di and the re-aeration constant at the same temperature is 0.72 d. The saturation concentration of oxygen is 10.2 mg/L at 15°C. i. Estimate the critical time, to, and location, X., with reference to dissolved oxygen concentration. ii. Estimate the minimum dissolved oxygen at the critical location, and comment on the ecological implication of the same.Q\Determination of liquid levels in industrial strong tanks using police radar?Glycerin flows at 35 m through a 150 mm diameter new wrought iron pipe at a velocity of 3 m/s. It has an absolute viscosity of 1.50 Pa-s and a specific gravity of glycerin = 1.26. 2. What is the type of flow?
- PROBLEM 7 Water from a pipeline is diverted into a weigh tank for exactly 15 min. The increased weight in the tank is 4765 Ib. What is the average flow rate in (a) gpm? (b) ft³/s?Question 4 Screenings are placed in a debris roll-off dumpster that holds 20 cubic yards of screening. How long will it take to fill the 20 cubic yard dumpster in days? Known Unknown Flow 8.0 MGD Time to fill dumpster, days Screening removed gal/day-100 gal/day Capacity of dumpster = 20 cubic yards 7.48 gallon in a cubic ft (ft3) 27 cubic ft in a cubic yard (yd3) = O 0.72 days O 100 days O 40.39 daysFor pipes in parallel, what condtions must be satisfied? O Flow is the accumulation of the flows throughout each branch pipe Head loss is a sum of the total (major and minor) head loss from entrace to exit The total head loss (major and minor) is equal throughout each branch pipe O The flow through each pipe is the same
- A certain jet fuel has a kinematic viscosity of 1.2 x 10-6 m2/s. If the fuel is being delivered to the engine at 200 L/min through a steel tube (Diameter = 22.10 mm), compute the Reynold number and identify the type of flow either laminar or turbulent?A PFR is designed to treat incoming waste water containing 7.33 mM of H2S at a flow rate of 100 liters/min. The observed removal rate constant is 0.008 L/mg/hr. 90% removal is required. What is the order of the observed reaction rate? What is the necessary retention time? What is the necessay reaction volume in m3?Q6The large tank holds 300 gallons of brine solution. Salt was entering and leaving the tank; a brine solution was being pumpedinto the tank at the rate of 3 gal/min; it mixed with the solution there, and then the mixture was pumped out at the rate of 3gal/min. The concentration of the salt in the inflow, or solution entering, was 2 lb/gal, so salt was entering the tank at therate Rin 5 (2 lb/gal) . (3 gal/min) = 6 lb/min and leaving the tank at the rate Rout 5 (A/300 lb/gal) . (3 gal/min) 5 A/100 lb/min.According to this information, if 50 pounds of salt were dissolved initially in the 300 gallons, how much salt is in the tankafter a long time?
- Determine the flow rate of pipe 2 and pipe 3 show your complete solutionA wastewater pump is discharging at a rate of 0.5 m3/s. It has a discharge nozzle diameter of 350 mm and a suction nozzle diameter of 400 mm. The reading on the discharge gage located at the pump centerline is 125kN / (m ^ 2) The value on the suction gage located 0.6 m below the pump centerline is 10 kN / (m ^ 2) Determine the head on the pump with Bernoulli's equation.A untreated waste water enters a stream as shown in figure. The concentration of sodium in the stream at point A is 15 mg/1 and the flow rate is 20 m/sec. The concentration of sodium in the waste stream is 250 mg/1 and the flow rate is 172.8 MLD. The concentration of sodium at point B, assuming the complete mixing has occurred is mg/1. River A Waste water C5A Cs. = 15 mg/1 C = 250 mg/1 = 20 m'/s Qsa Q =172.8 MLD