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An industrial waste water treatment plant discharges into a large river. the industrial waste water is at 1m^3/s and contains an ultimate BOD concentration of 300mg/L at a temperature of 30 degrees C and a DO concentration of 2.5mg/L. the velocity of the river is 1.5m/s. Upstream of the point of discharge, the river has a temperture of 11 degrees Celcius, an ultimate BOD of 22mg/L, a DO concentration of 10mg/L and a flow rate of 4m^#/s. the deoxygenation rate and the reoxygenation rate coefficients are 0.15d^-1 and 0.5d^-1 at 20 degrees Celcius respectively.
Find:a) Temperature of the water at the discharge point.
B)dissolved-oxygen concentration at the point of discharge.
C)Dissolved-oxygen deficit at the point of discharge.
D) ultimate BOD at the point of discharge.
suppose a family of four, living in a home with an area of 100x5oft connects its stormwater drain to the sewer. Assume that 1in of rain falls over 1 day. what percentage increase will there be in the flow from their house over the dry weather flo..
Determine the basin dimensions (width, length, depth) for a detention time of 3 hours and a length to width ratio of 4 to 1. (use English units)
if point D is at (100,100) and the line DE to "E" is 300 feet long at an azimuth of 225 degree , what is location of point E in the XY coordinate system. what is the length and azimuth of the line connection points (100,100) to (300,500)
If it is subjected to the load of 20kN and the soil provides a frictional resistance that is uniformly distributed along its sides of w = 3kN/m , determine the force at its bottom needed for equilibrium. Neglect the weight of the post.
How do you calculate pH of water at 25 degrees that contains 0.6580mg/l carbonic acid. Assume that [H+] =[HCO3-]at equilibriumand ignore the dissociation of water.
the flow profile is such that u=u(max)*(1-(r/R)^2) where u is the flow speed and r is the distance from the centre of the pipe in the radial direction. What is the shear stress on the pipe wall What is the shear force exerted by the oil on a 1m lo..
The platform itself weights 30 kN in air, and each cylinder weighs 1.0 kN per meter of length. What total cylinder length L is required for the platform to float 1 m above the water surface
A water sample has phenolphthalein alkalinity (PPA) of 30 mg/L as CaCO3 and total alkalinity (TA) of 84 mg/L as CaCO3. If OH alkalinity is 5.3 mg/L as CaCO3, Calculate the alkalinity due to HCO3- and CO3-2.
A room in a single-story building has three 2.5 x 4 ft double-hung wood windows of average fit that are not weather-stripped. The wind is 23 mph and normal to the wall with negligible pressurization of the room.
The mass m, stiffness k, and natural frequency fn of an undamped SDF system are unknown. These properties are to be determined by harmonic excitation tests. at an excitation frequency of 4 Hz, the response tends to increase without bound.
A person produces about 0.17 pounds of BOD per day in fecal waste. What is the population equivalent of the wastewater flow Based on this calculated population, what would the average daily wastewater production be per person
what criteria should Zachary use evaluate the project ?
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