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1.A dairy that processes about 250,000 lb of milk daily produces an average of 65,100 gpd of wastewater with a BOD of 1400 mg/L. The principal opearations are bottling milk and maing ice cream with limited produciton of cottage cheese. What is the wasewater flow and BOD per 1000 lbs of milk recieved and calculate the BOD and hydraulic equivalent opulations of daily wastewater discharge.
2.A fresh wastewater containing nitrate ions, sulfate ions, and dissolved oxygen is placed in a sealed jar without air. In what sequence are these oxidized compunds reduced by the bacteria, and why is the substrate that is reduced first preferred by the hydrogen acceptor. When do obnoxious odors appear?
Determine the uniform flow depth in a rectangular channel 2.5 m wide with a discharge of 3 m3/s. The slope is 0.0004 and Manning's roughness coefficient is 0.015
Consider the flow field where angular velocity w is equal to 2pi rad/s ( a physical frequency of 1 Hz). Is this flow field compressible or incompressible
A load of 14 tonnes is suspended at the end of a steel rope.If the load is subjected to a maximum acceleration/deceleration of2.5m/s2, when raised and lowered, calculate the diameter of therope needed to support the load. Assume the following:
a 2kg piston accelerates to 20m/s from rest. what constant gas pressure is required if the area is 10cm^2, the travel is 10cm and the outside pressure is 100Kpa
The tank contains water to depth of 2m and oil (SG=0.8) on top of the water to a depth of 1m. Determine the magnitude and location of the resultant force acting on one end of the tank (i.e. 3m high by 3m wide).
A w14X74 of A992 Steel has a length of 20 feet and fixed ends. Compute the design compressive strength for LRFD and the allowable compressive strength for ASD.
What is the Federal Express philosophy toward quality? What specific elements/actions has FedEx implemented in its quality improvement history?
(a). Find the sum of moments about point E due to this system of forces (b). Find the sum of moments about point A due to this system of forces (c). Find the resultant couple moment acting on the beam
The flow of water over a weir, can be computed by Q=5.35LH^(3/2), where Q is the volume low rate of water in cubic feet per second, L is the length of weir in feet, and H is the height of water over the weir in feet.
Crude oil (s.g.= 0.86, m =7.18*10-3 Pa*s) is to be carried at a flow rate of 0.25m3/s between two tanks with a difference of surfaceelevation of 9 m. The pipeline is smooth (e=0) and 90m long. What pipe size (diameter) is required?
Bars AB and CD are made of A-36 steel and 2014-T6 aluminum alloy,respectively. When the temperature is at 75degreeF, ACE is in the horizontal position.
An unknown fluid flows through a horizontal 35-mm-diameter pipe with a Reynolds number of 100,000 and a density of 680 kg/m3. The pressure drop across a 21-mm-diameter nozzle meter placed in the pipe is 4.2 kPa.
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