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A two stage high rate trickling plant is to treat a municipal wastewater having a flow of 2.0mgd. pertinent data: influent BOD5 = 200mg/l, BOD5 removal by primary clarifier = 33%, filter bed depth = 5 to 7ft, first and second stage filter are equal in diameter, and depth, recycle ratio = 1.0 for each filter and effluent BOD5 = 20mg/l. using the NRC equation, determine the volume of stone required for each filter. and determine the effluent BOD5
For each of the following transitions, draw E2,y2 on the specific energy chart and fully describe the reasoning. a. In a rectangular channel, there is a sudden drop in the channel bottom. Did the water depth increase or decrease
A tow truck is using a cable to pull a car up a 15 degree hill. If the car weighs 4000 lbs and the cable has a diameter of .75 inches, find the stress in the cable when the truck comes to a stop while on the hill.
The depth of the water in the flume is 3m. The average velocity is 1.7m/s. Compute the hydraulic energy at the surface of the water and at the bottom of the flume.
a closed tank contains two straified non misicble fluid layers and compressed air. the fluid of the tank is saline water (relative density 1.036) with a total depth of 3.5m. the top fluid layer is oil (relative density of 08.2) with a depth of 0.6..
A rainstrom lasts for 90 min at a constant intensity of 3.2 in/hr over a five acre parking lot. a detention pond is used to store all of the runoff from the parking lot and cannot be deeper than 2 ft. how many acres should the detention pond be to st..
how would the determination of bulk specific gravity of fine aggregate be affected by the 500g sample being drier than
A manometer is used to measure the pressure difference between points A and B in a pipe. Water flows in the pipe, and the specific gravity of the manometer fluid is 2.8. The distances and manometer deflection are indicated.
a three-span continuous beam abcd with three equal spans supports a uniform loadnbspwith intensity q. determine all
A pressure gage at elevation 4.8 m on the side of a storage tank containing oil reads 34.7 kPa.Another gage at elevation 2.2 m reads 57.5 kPa. Compute the specific weight, density, and specific gravity of the oil.
You are asked to design a horizontal curve for a two-lane road. The road has 12-ft. lanes. Due to expansive excavation, it is determined that a maximum of 34 ft. can be cleared from the road's centerline toward the inside
a a pool of tetrachloroethylene pce has formed above a vertical fracture of circular cross section having an average
Heyden Motion Solutions ordered $7 million worth of seamless tubes for its drill collars from the Timken Company of Canton, Ohio. (A drill collar is heavy tubular connection between a drill pipe and a drill bit.)
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