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A flocculation/sedimentation combination basin in a conventional drinking water treatment plant is to be constructed of cast-in-place reinforced concrete. The horizontal flow rectangular basin will
Draw the shear and moment Diagram for a beam that is 10 feet long, supported on the left end by a roler, and the right end by a pin, and has a 1000 lb load placed in the center i.e at 5 feet.
Estimate how much carbon (in pounds) must be purcahsed for a typical 2-bed carbon adsorption system to treat 5000 cfm of air at 95 degrees F and 1 atm. The air contains 600 ppm of styrene.
You are assined the task of process design for a fixed-bed carbon adsorber system. You are given the following data: the inlet airstream flows at 5000 acfm (at 95 degrees F and 1 atm) and contains .
A fixed-bed carbon adsorption system consisting of two 3-foot-deep beds containing 6 x 16 mesh carbon operates at a superficial gas velocity of 60 ft/min. Specify the horsepwoer of the fan motor for
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.
What are the basic assumptions of the 'traffic flow model' and 'capacity model' used in signal timing design. Discuss.
it was observed that the quantity of the water flowing through the sand layer into the collection ditch is 250 m^3/day. What is the hydraulic conductivity of the sand (k)
A company issues corporate bonds that have a coupon rate of 4%, pays dividends quarterly, and has a term of 10 years. Compute the dividend paid per quarter for each bond.
Calculate the surface area (m2), diameter (m), volume (m3), and hydraulic retention time of a 3 m deep circular, primary clarifier that would remove 50 percent of suspended solids. Assume the surfac
A Carnot heat engine is supplied with a high temperature heat source at a rate of 200 kW. If the power output of the heat engine is 120 kW, determine the required source temperature if the heat sink
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 combu
Indoor Air quality is greatly affected by Radon, which can cause lung cancer. When we moved to Colorado, we tested the house for Radon and installed a radon mitigation system.
Cyanide solutions used for heap leaching are made up of sodium cyanide (NaCN). The sodium cyanide solution ([NaCN]-total = 0.01 M) is kept at pH 10.4. The pH is kept high to keep the cyanide in the
write a computer program and use it to calculate the bending moment under each load and at the midpoint c of the beam for values of x from 0 to 24 ft at interval delta x = 1.5ft
A definition of the sort of users that would be expected to access the site. This should incorporate a description of any special provision needing to be made to make the site usable for disabled us
the stress at a point is shown on the element. Determine the principal stresses and the absolute maximum shear stress.
A small town produces 0.15 MGD of wastewater. How many acres in size would an aerated lagoon need to be to treat this wastewater assuming a depth of 8 ft. and a detention time of 6 days
The saturated unit weight (sat) of the sand is 20.0 kN/m3 and the anticipated depth to water in the well during pumping is 20 m below ground surface.
Labor of this activity is given as in the CREW, 1 brick mason and 1 helper. The productivity is 0.5 labor hours per 1 sf. The wages are for the mason $60 and for the helper $45 per hour.
The Fluoride feeder runs out of feed solution. The rapid mix tank is connected to a 5 km long distribution pipe. The flow rate into the tank mix tank is 0.44 m/s and the volume of the tank is 2.50 m
Consider a beam of length 1.5L(meters) with hinge support and roller support from both the ends (respectively left and right) at distance of L/4. The beam is subjected to triangular loading from
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 =
a low rate trickling filter plant gives 95% BOD5 removal. the primary clarifier removes 33% of the BOD5 applied to it. the secondary sludge amounts to 0.029lb dry solid/cap-day. if the raw wastewate
The static pressures upstream and downstream of the screen are 0.2 and 0.15 psi and are uniformly distributed over the flow cross section area. Neglecting the force exerted by the duct wall on the fl