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A well mixed sewage lagoon is to be constructed to process 100,000 gallons per day of raw sewage. The pollutant concentration in the raw sewage to be discharged into the lagoon is 200ppm. The organic matter in the sewage has been shown in a laboratory experiment to be degraded biologically according to first order kinetics. The reaction rate constant (decay coefficent) is 0.5d^-1. According to State Enviromental Protection Agency the concentration of the lagoon effluent must be below 2ppm. Determine the surface area of a 1m depth lagoon. Assume no other water losses or gains (evaporation, seepage, or rainfall) and that the lagoon is completely mixed.
Route 1 has a free flow travel time of 4 mintutes and travel time increases by 3 minutes and for each additonal 1000 vehicle in flow, and route 2 has a free flow travel time of "b" minutes and travel time increases
If they plan to increase their savings by 5% each year, how much must they invest in the first year given that they expect to earn 4% per year on their investment?
For the loading sown, use double integration method to determine: the equation of the elastic curve for the cantilever beam, the deflection at the free end and the slope at the free end.
What should TAC , TAB and the acute angle ? between TAB and the vertical to minimize the tension TAB ? Take o and W = 1,000 N. Hint: Consider various possible force triangles and decide on inspection how to minimize TAB.
What is the solution if foundation bolt cut by some way from their bottom of skid, i mean skid base than how to keep another bolt etc for tightness of skid along with pump-motor already fittied with pipe and other fitting's too..
Perform a material balance on substrate (S) around a chemostat (completely mixed reactor without recycle) assuming a first-order removal for a substrate with a rate constant of 0.5 hr-1.
The 12 in diameter cast iron pipe is 2000ft long, the water surface is El 200 in the reservoir on the left B. El 175 on the right. A. Find V and Q by hazen-williams for a new cast iron pipe (Chw=130) Neglect entrance, exit and local losses.
A system consists of liquid oxygen in equilibrium with oxygen vapor. How many phases are present The system undergoes a process during which some of the liquid is vaporized.
A chemical mixing basin is to be designed to blend chlorine and treated wastewater. The basin flow is 700 gallons per minute and the basin dimensions are 5 feet by 5 feet by 5 feet water depth.
A horizontal curve was designed for a four-lane highway for adequate SSD. Lane widths are 12 feet, and the superelevation is 0.06 and was set assuming maximum fx.
Soil A is micaceous with an average grain relative density of 2.80, and has a high plasticity in its fine fraction. The ground quartz-feldspathic B is, with an average relative density of 2.65 and fine grains of low plasticity.
A coal fired power plant can be modeled as a heat engine. If the power output of the plant is 200 MW and the thermal efficiency is 42%, determine the amount of coal used per day if the heat of combustion from the coal is 24,000 kJ/kg.
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