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It has been reported that a peat biofilter treating styrene had a maximum elimination capacity of 100 g/m^3-hr,and a critical load of between 60-75 g/m^3-hr. Further investigation reveals that a 97% efficiency was acheived at a load 40 g/m^3-hr. Assume that tomeet a local odor ordinance you must design for at least a 90% removal efficiency. Use this information to estimate the demensions of the biofilter needed to treat 10,000 m^3/hr of air (at 30 C and 1 atm) containing 200 ppm styrene being emitted from a boat- manufacturing plant. Assume the bed must be at least 1 meter deep, and that the surface loading cannot exceed 1.5m/min.
what is the final dissolved oxygen concentration (in mg/L) in the waste lagoon after all of the ammonium (NH4 + ) is converted to nitrate? Recall that 4.57 mg of O 2 is need per mg of ammonium (as N) oxidized during nitirification. After all of the..
Assume the settling tank behaves like an ideal sedimentation tank, what percentage of removal should be expected for particles with a settling velocity of 0.002 m/sec
A small blimp is temporarily moored wherein DC and the centerline of AB are coplanar. A force F from wind, weight, and buoyancy is shown acting at the centerline of the blimp. If F = 5i+ 10 j + 18 k kN
Water flows steadily through a horizontal nozzle. The nozzle inlet diameter is 6 in. At the nozzle outlet, where the pressure is atmospheric, the diameter is 2 in. Determine the pressure head at the nozzle inlet to produce a water jet velocity of ..
the fixture ac is designed with a screw adjustment to regulate the height of the 900 n load supported by the roller
A small truck is to be driven down a 4% grade at 70mi/hr. The coefficient of road adhesion is 0.95, and it is known that the baking efficiency is 80% when the truck is empty and decreases by one percentage point for every 100 lb of cargo added.
Water enters a two-armed lawn sprinkler along the vertical axis (normal to the page) at a rate of 80 L/s and leaves the sprinkler nozzles as 1.5-cm diameter jets at an angle of from the tangential direction.
An unconfined compression test was conducted on a compacted soil sample, 50 mm diameter by 100 mm long. The peak axial force recorded was 230 N and the sample shortened by 2 mm.
what are two or three quality management tools used in data collection? what types of quality management tools do you
An 18 in. newriveted steel pipe 1000 ft long runs from elevation 150 ft toelevation 200 ft. If the pressure at elevation 150 ft is 100 psiand at elevation 200 ft is 72 psi, what flowrate can be expectedthrough the line? (use e = 0.003 ft)
An open clean glass tube, having a diameter of 3 mm is inserted vertically into a dish of mercury at 20c .How far will the column of mercury (S.G =13.6) in the tube be depressed in (mm) given the following information. Theta = 130 and surface tens..
A piston-cylinder device initially contains 20 g of saturated water vapor at 300 kPa. A resistance heater is operated within the cylinder with a current of 0.4 A from a 240 V source until the volume doubles.
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