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The town of Camp Verde has been directed to upgrade its primary WWTP to a second plant that can meet an effluent standard of 25 mg/L BOD5 and 30 mg/L suspended solids. They have selected a completely mixed activated sludge system for the upgrade. The existing primary treatment plant has a flow rate of 0.029 m^3/s. The effluent from the primary tank has BOD5 of 240 mg/L. Using the following assumptions, estimated the required volume of the aeration tank:
1. BOD5 of the effluent suspended solids is 70 percent of the allowable suspended solids concentration.
2. Growth constants value are estimated to be: Ks=100 mg/L BOD5; kd=0.025 d^-1; um=10 d^-1; Y=0.8 mg VSS/mg BOD5 removed.
3. The design MLVSS is 3000 mg/L Please provide all the work
A composite price index for the cost of vegetarian foods called eggs, artichokes, and tofu (EAT) was 330 ten years ago and has averaged an annual increase of 12% since. Calculate the current value of the index.
A parking facility on a campus was recently opened to faculty,staff and students.It cost a total of $ 300,000 to construct the facility. It is expected that thefacility will require no maintenance for the first 2 years ofoperation.At end of year 3, t..
Write an M-file to calculate the factorial function of N!, as defined by: N!=1 N=0 N!=N*(N-1)*(N-2)*...*3*2*1 N>0 The MATLAB code to calculate N factorial for positive value of N would be n_factorial=1
Use the strain-transformation equations to determine (a) the in-plane principle strains and (b) the maximum in-plane shear strain and average normal strain.
A pond has a surface area of 1.0 acre. A stream flows into the pond at 1.2 cubic feet per second for the entire year. The evaporation rate, also steady for the entire year, is 1 in. /month. Assume that the pond is in the shape of a cylinder.
A "slap shot" in the game of hockey can cause an increase in the velocity of a 5 oz puck from 2 ft/sec to 110 ft/sec. What would be the corresponding increase in the kinetic energy (ft-lb) of the puck.
A 40 cm diameter well has been constructed in a water-table aquifer. A pump capable of continuous discharge at 600 m3/day has been installed to test the well. Observation wells are located 10 meter and 50 meters from the pumped well. After pumping co..
If vehicles are processed at a uniform deterministic rate of six per minute, determine when the queue will dissipate, the total delay, the maximum queue length (in vehicles), the longest vehicle delay under FIFO, and the longest vehicle delay unde..
The water table is lowered from a depth of 10' to a depth of 20' in a deposit of silt. All the silt is saturated, even after the water table is lowered. The silt's water content is 26%. Find the increase in effective vertical stress at a depth of 34'..
Testing has already been completed on the water and the Usage Rate for the carbon is 0.4 pounds of carbon per 1000 gallons of water treated. The required EBCT is 20 minutes and the carbon longevity must be at least 6 months.
A wrought iron water line connecting two reservoirs at 20°C has a length of 1500 m, a diameter of 75 cm, two elbows (90º, long-radius, flanged), a fully open gate valve, and a reentrant pipe entrance.
The space truss shown is supported by a ball-and-socket joint at D and by short links at A and C. Determine the support reactions and the force in each member of the space truss.
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