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A pickle producing plant produces and discharges a waste brine solution with a salinity of 13,000 mg/L NaCl at a rate of 0.14 MGD into a stream. Before the discharge enters the stream, the flow rate of the stream is 1.2 MGD and the salinity is 20 mg/L. Assume that you can model this as a CSTR.
What is the concentration of the mixture of the stream and the discharge directly below the discharge point?
Directly below the discharge point is a prime fishing spot and the fish are intolerant to salt concentrations above 200 mg/L. How much salt should be removed per day from the plant effluent stream in order to maintain a concentration of salt < 200 mg/L in the stream mixture?
How many gallons of mercury (sg=13.54) would weight the same as 5 gallons of castor oil which has a specific weight of 56.69 pcf?
a) Density plot, locating γd(max) and ω opt on the plot b) Zero-air voids curve for the soil on the same plotc) Curve representing S = 70%
What are Engineering Societies based upon the research? List at least 10 discipline specific engineering societies along with their website addresses.
Compute the stresses and deflections at the corner of the slab according to Westergaard and Ioannides. Compute the stresses and deflections at the edge and interior according to Westergaard.
We have a situation where hydrogen gas at 300 degrees C is flowing out of a tube at the rate of 100 mL/min. The tube is located in a fume hood operating at 25 degrees C and 1 atm.
A wrought iron water line connecting two reservoirs at 20°C has a length of 1500 m, a diameter of 75 cm, two elbows (90º, long-radius, flanged), a fully open gate valve, and a reentrant pipe entrance.
determine the force in members GF,FB, and BC of the Fink truss and state if the members are in tension or compression
Calculate the metric tons of gravel required to fill an excavated area 70 meters by 50 meters by 2 meters deep if the gravel has a density of 1890 kg/(m^3).
A passive solar house that is losing heat is outdoors at an average rate of 50,000 kJ/h is maintained at 22oC at all times during a winter night for 10h.
If log KSO, calcite (CaCO3(s)) = -8.61 at 50 oC, would calcite be over- or under- saturated in a hot water heater at 50 oC if the water was in equilibrium with calcite at 25 oC (log KSO = -8.30) when it entered the house
If the nuclei from the liquid were cuboids, determine the critical radius and the activation energy of solidification for Spheroidal nuclei.
If the state standard downstream is not met, the state has informed town 1 that it must treat its sewage further so the downstream standard is met. Use a mass balance approach to show that the state's request is unfeasible.
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