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To remove the solution containing metal from a part after plating the part is commonly rinsed with water. The rinse water is contaminated with metal and must be treated before discharge. The Shiny Metal Plating Co. The plating solution contains 85mg/L of nickel. The parts drag out 0.05 L/min of plating solution into the rinse tank. The flow of rinse water into the rinse tank is 150 L/min. Write the general mass balance equation for the rinse tank and estimate the concentration of nickel in the wastewater stream that must be treated. Assume that the rinse tank is completely mixed and that no reactions take place in the rinse tank.
A new interstate highway is being built with a design speed of 70 mi/h. For one of the horizontal curves, the radius (measured to the innermost cehicle path) is tentatively planned as 2500 ft. What rate of superelevation is required for this curve
Reciprocal leveling gives the following readings in feet from a setup near A: on A, 2.071; on B, 8.254, 8.259 and 8.257. At the setup near B: on B, 9.112; on A, 2.926, 2.930 and 2.927. The elevation of B is 1099.600. Compute the disclosure and ele..
Determine the maximum allowable misclose for this engineering survey using the formula based on the munber of instriunent stations used in the work.
A 1.5 m diameter culver (concrete barrel, well - rounded entrance) that is 20m long is installed on a slope of 2 percent. The design discharge is 9.5 m^3/sec and the inlet will be submerged but not the outlet.
A stream is in equilibrium with atmospheric oxygen upstream of a waste outfall. The waste outfall creates a BODo of 20 mg/L in the stream. The k(BOD) is 0.4 /day and the k(o2) is 1.4 / day. The stream temperature is 15 degrees Celsius.
A sample with a measured background level (Bi) of 22 mg/l was spiked with the equivalent of 30 mg/l without appreciably changing the sample volume. The result for the spiked sample (Ai) was 49.2 mg/l. Calculate Pi and determine if it falls with th..
two forces applied as shown to a hook support. knowing that the magnitude of P is 35 N, determine by trigonometry the required angle if the resultant R of the two forces applied to the support is to be horizontal and the corresponding magnitude of..
What is the name of the text book and author used for thr course CEE30 in the spring quarter of 2013, at University of California Irvine?
Cartridges cost $120 each and require 2 weeks to obtain from the vendor. Jill uses (Q,r) policy to control inventory of cartridges. You can assume that there are 50 working weeks in a year.
determine the maximum negative moment in each span and maximum negative moment at each support. remember that live loads shall be placed so as to cause the greatest effect. specify the method that you used to determine the moments.
Estimate the effective friction angle for the sand (assume c' = 0). Calculate the sand's shear strength (τf) on a horizontal plane at depths of the 20 ft and 50 ft.
The volume flow rate of streams into the pipe is given by QA = 0.02t m 3 /s and that of stream B by QB = 0.008t 2 m 3 /s, where t is in seconds. The exit area of the pipe is 0.01m 2 . Find velocity and acceleration of the flow at exit at t = 1s.
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