What is contact time-min required to achieve deactivation

Assignment Help Civil Engineering
Reference no: EM13318282

What is the contact time (min) required to achieve a log-3 deactivation of Giardia in water of 10 °C temperature, at pH 7, if the chlorine concentration is 2.2 mg/L?

Reference no: EM13318282

Questions Cloud

What is the charge on the capacitor : An air-filled parallel-plate capacitor has plates of area 2.20 cm2 separated by 2.00 mm. What is the charge on the capacitor
Compute the ph of solution formed by the addition of naoh : Calculate the pH of the solution formed by the addition of 55.5 mL of 0.100 M NaOH to 49.2 mL of 0.100 M H3PO4.
Electromagnetic spectrum would such a wave lie : What would be the wavelength of an electromagnetic wave having a frequeny equal to the clock speed of 3.2 ghz personal computer? In what part of the electromagnetic spectrum would such a wave lie?
What is the amplitude of the magnetic field of this wave : The intensity of an electromagnetic wave is 8 x 10^7 W/m^2. What is the amplitude of the magnetic field of this wave
What is contact time-min required to achieve deactivation : What is the contact time (min) required to achieve a log-3 deactivation of Giardia in water of 10 °C temperature, at pH 7, if the chlorine concentration is 2.2 mg/L
Find the velocities of the two objects after the collision : Let the mass of object 1 be m and the mass of object 2 be 3m. what are the velocities of the two objects after the collision
Explain the minimum concentration of mg2+ required : What is the minimum concentration of Mg2+ required to begin precipitating Mg(OH)2(s) in a solution of pH 10.82? For Mg(OH)2
State the appropriate null and alternate hypotheses : The installation of a radon abatement device is recommended in any home where the mean radon concentration is 4.0 picocuries per liter (pCi/L) or more, because it is thought that longterm exposure to sufficiently high doses of radon can increase t..
How many grams of dry nh4cl need to be added to ammonia : How many grams of dry NH4Cl need to be added to 2.50 L of a 0.500 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.74? Kb for ammonia is 1.8*10^-5.

Reviews

Write a Review

Civil Engineering Questions & Answers

  Possible characteristic or property of sanstone

Give one possible characteristic or property of sanstone and of the quartzite that made you decide not to select it for your concrete project?

  Determine the flow of vehicles on the level section

rom a photograph one observes that on a level section of highway 10% of the vehicles are trucks, 90% are cars, and that there are 50 vehicles per mile of highway. The trucks travel at 40 mph, and the cars at 50 mph.

  What fraction of vehicles would be trucks on a photograph

If all trucks travel at a speed v', cars at a speed v, and the fraction of vehicles passing a stationary observer that are trucks is p, what fraction of vehicles would be trucks on a photograph

  How many pounds of coal must be burned to keep one bulb

how many pounds of coal must be burned to keep one 100 watt light bulb lit for one hour. Assume efficiency of the power plant is 35%, the transmission losses are 10% fo the delivered poer, and the heating value of coal is 12,000 BTU/lb

  Find hp per foot of cutting edge ratio for all 4-conditions

The Caterpillar D6R Series 3 and D8R tractors are rated, respectively, at flywheel horsepowers (fwhp) 0f 185 and 305. The "A," "S," and "SU" blade widths (length) for the D6R are S, 16 ft, 9 in.; A, 17 ft, 1 in

  Determine flow rate into or out of each reservoir

Three reservoirs are connected by three pipes with hA = 100 f t, hB = 20 f t, hC = 0 f t, l1 = 1000 f t, l2 = 500 f t, l3 = 400 f t and D1 = D2 = D3 = 1 f t. Determine flow rate into or out of each reservoir if friction in each pipe is 0.02.

  Determine groundwater flow per unit width of the aquifer

The piezometer A is located 4,000 ft south of piezometer B.  Approximately 3,000 ft of piezometer B there is a river with an elevation relative to sea level of about 455 ft.

  Write a detailed set of instructions for replacing the tire

Write a detailed set of instructions (algorithm) for replacing the tire and inner tube on the front wheel of a ten-speed bicycle. The bicycle has caliper brakes that must be loosened unless the tire is not inflated.

  Calculate the wet density in pounds per cubic feet

A small chunk of the original sample had a wet weight of 140.9 grams and weighed 85.2 grams after drying. Compute the water content, using the correct number of significant figures.

  Calculate the flow rate from the lake and into the aquifer

A geological fault truncates the aquifer at a distance "L" upstream from the river. The hydraulic conductivity of the area between the fault and the river is 50 ft / day and hydraulic conductivity between the lake and the fault is 100 ft / day.

  Isotropic and homogenous hydraulic conductivity

Assuming an isotropic and homogenous hydraulic conductivity of 0.0001 cm/s what is the magnitude and direction of specific discharge (q)?

  What is the maximum diameter that the rod can have

Under the right conditions, it is possible, due to surface tension, to have metal objects float on water. Consider placing a short length of a small diameter steel (sp. wt. =460 lb/ft^3) rod on a surface of water.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd