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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?
At a specified point on a highway, vehicles are known to arrive according to a poisson process. Vehicles are counted in 20 second intervals, and vehicle counts are taken in 120 of these time intervals.
A heavy Machine is lowered into a pt by means of a rope wrapped around an 8" diameter stationary pole placed horizontally across the top of the pit. The coefficient of static friction for the rope on the pole is 0.35.
A volume of 1.5x106 m3 of water is then pumped out of the aquifer resulting in a decrease of the groundwater level to 208.8 m. Assuming that the water table in the aquifer responds similarly
The salt water mixes thoroughly with the fresh water and the mixture overflows out of the tank. If the flow rate out of the tank is 60 liters/minute. Assume freshwater is 1000 kg/m^3, and the salty water is 1020 kg/m^3.
The motion occurs in the horizontal x-y plane. Determine the velocity V2 of the particle at the end of the 3-s interval.
A canal is constructed parallel to a river 600 m away both fully penetrating an unconfined aquifer of coarse sand and fine gravel as shown in the illustration below. The aquifer is subject to an average infiltration of 2.3 m/year
Discuss the method of investigation upgrading of existing gravel road to bituminous paved standard,40km long.
On a flexible pavement with a 3 inch hot mix asphalt (HMA) wearing surface, a 6 inch soil cement base and an 8 inch crushed stone subbase, which truck will cause more pavement damage?(Suppose drainage coefficients are 1.0).
The company would like to distribute the songs between the two CDs such that the used space on each CD is about the same. Formulate the problem as an IP, and find the optimal solution.
A solid one-way slab is to be used for a framing system Column spacing is 33 ft, with regularly spaced beams occurring at 11 ft center to center. Superimposed dead load on the structure is 50 psf and the live load is 75 psf.
The strain in member AB was measured to be 8.9*10-4. If the member is an L3*2 1/2* 1/4 of A36 steel determine the following: a) What is the change in length in inches b) What is the force in the member
A company that manufactures regenerative thermal oxidizers made an investment 10 years ago that is now worth $1,300,000.
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