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Toluene has contaminated a city's drinking-water supply. An activated carbon system has been constructed so toluene concentrations are treated to below specified regulatory levels. If the toluene concentration in the water supply is 1,000 ppb, the treatment objective is 5 ppb, and the flow of water is 378 L/min (100 gpm), what mass of PAC must be placed in a contact basin on a daily basis to satisfy the treatment objective? The Freundlich parameters for toluene and the particular carbon are K = 26.1 mg/gm (L/mg)1/n and 1/n = 0.44.
what is the definition of critical state. explain at which stage a critical state may be approached in a drained triaxial text on a overconsolidated clay using stress path and strain-strain plot.
A closed system of 0.123kg undergoes a frictionless, quasi-static process along the path PV=C from 100kpa to a final state where the volume is twice the initial volume.
Soil falls from a conveyor belt into a cone shaped pile at a rate of 1000lb/min. The bulk density of the soil is 110lb/ft^3. The height of the pile is equal to the base diameter.
What is the definition of a customer? What are some examples of internal and external customers? Is the measurement of customer satisfaction different for internal customers than for external customers?
Discuss the method of investigation upgrading of existing gravel road to bituminous paved standard,40km long.
Ask question ellipse construction via foci method
Water flows upward in a vertical 12" pipe at the rate of 7.85 cfs. At point A in the pipe the pressure is 30.5 psi. At B, 15 ft above A, the diameter is 24" and the lost head A to B equals 6 ft.
Water is flowing at a depth of 10 ft with a velocity of 10 ft/s in a channel of rectangular section. Find the depth and change in water surface elevation caused by a smooth upward step in the channel bottom of 1 ft.
The power output of the turbine is just 0.1 kW. If the process is adiabatic and steady, what is the required flow rate of air through the turbine if the exit state is 100 kPa and - 53 C.
The Hubert H. Humphrey Metrodome in Minneapolis opened in 1982 at a cost of $55 million. To prepare for the footings, et cetera, 3.00x105 cubic yards of dirt were removed. The Metrodome's inflatable roof covers 10.0 acres and its interior volume i..
a 9in radius cylinder of weight 18lb rests on a 6lb carriage. the system is at rest when a force p of magnitude 2.5 lb is applied ( p is coming out of the car the cylinder is sitting on and going to the right) for 1.2s.
At what speed the rule of 25 feet separation between two cars is safe?
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