What is the resulting solids concentration

Assignment Help Civil Engineering
Reference no: EM13536781

Raw primary sludge at a solids concentration of 3% is mixed with waste activated sludge at a solids concentration of 6,000 ppm. The flows are 20 and 25 gal/min, respectively. What is the resulting solids concentration? This mixture is next thickened to a solids concentration of 80,000mg/L solids. What are the quantities ( in gallons per minute)of the thickened sludge and thickener overflow (water) produced ? Assume perfect solids capture in the thickener. Also, draw a blackbox diagram for this problem. Show all work

Reference no: EM13536781

Questions Cloud

Determine the allowable length of the penstock : The bracket ABC can be supported in the eight different ways shown. All connections consist of smooth pins,rollers, or short links. For each case, answer the questions listed in Prob.4.59,and, whenever possible
How large must the lagoon be to achieve a concentration : A completely mixed aerated lagoon (batch reactor) is to be used. How large must hte lagoon be to achieve a concentration of effluent that is 50 mg/L
What is the required detention time and tank : A chlorination process is to be used to disinfect a wastewater treatment plant effluent. The plant treats 1.8MGD (million gallon per day). The water entering this unit has about 4500mg/L of coliforms, and the effluent target is 0.1 mg/L of coliforms.
What are the bearings of the sides : Why is the torque on A and the torque on AB opposite? Wouldn't they be the same? How do we know which direction the torque is applied at A to begin with? It's not specified.
What is the resulting solids concentration : Raw primary sludge at a solids concentration of 3% is mixed with waste activated sludge at a solids concentration of 6,000 ppm. The flows are 20 and 25 gal/min, respectively. What is the resulting solids concentration?
Give the definition of relative density in term of void : Air flows into the atmosphere from a nozzle and strikes a vertical plate as shown in Fig. P5.28. A horizontal force of 9 N is required to hold the plate in place. Determine the reading on the pressure gage. Assume the flow to be incompressible and fr..
The reservoir is connected to a round tube : As shown, a load of mass 10 kg is situated on a piston of diameter D1 = 140 mm. The piston rides on a reservoir of oil of depth h1 = 42 mm and specific gravity S = 0.8.
Will the two drops collide : A carpenter uses a hammer to strike a nail. Approximate the hammer's weight of 1.8lbs, as being concentrated at the head, and assume that at impact the head is traveling in the -j direction
What is the normal stress it is undergoing the shear stress : In another area of the mine the roof is sloped at 30 degrees. For a 1 x 1 meter square section of sloped roof what is the normal stress it is undergoing? The shear stress?

Reviews

Write a Review

Civil Engineering Questions & Answers

  Determine the required elevation drop of trapezoidal channel

A clean-earth trapezoidal channel with a bottom width of 1.8 m and a side surface slope 1:1 is to drain water uniformly at a rate of 8 m^3/s to a distance ok 1 km. If the flow depth is not to exceed 1.2 m,

  Critical review decision making of failed major construction

Critical review the decision making of a failed major construction/property project within the UK in the last ten years.

  Compute the maximum acceptable service load on an a36 steel

compute the maximum acceptable service load on an a36 steel plate tension member 14in.x12in. having a single line of

  Calculate the stress in a rebar subjected to tensile bar

Calculate the stress in a No. 7 rebar subjected to a tensile load of 10,600 lb (in ksi).

  Find when is the rider going to reach the stopping point

If we apply a breaking system to a skateboard while the speed of the skateboard is 5Milies per hour, the rider average weights is 180bounds while his height is 170 cm. You can assume the distance as it is 50meters.

  Determine what would be the carbon emission rate

Suppose in 100 years energy consumption is still 330 Ej/yr, but coal supplies only 20 percent of total demand, natural gas supplies 30 percent, and oil 10 percent. The remaining 40 percent of demand is met by noncarbon-emitting sources.

  Find the absolute-gage and vacuum pressures in the jar

A glass jar is heated in an oven and sealed when the air pressure is 103 kPa and the temperature is 105 C. Find the absolute, gage, and vacuum pressures in the jar when it cools to 20 C.

  Compute semiannual coupon payment investor will receive

If, on 8/1/2019, 3-year municipal bonds with an AA- rating and a coupon rate of 6.50% (payable semiannually) are selling for $100.00, what would be the fair market value of the 300 Whittier bonds (not including the 8/1/2019 coupon payment)

  Determine the room temperature when the student comes back

A NCSU student turned on his/her 150 W fan inside his/her room, 4m * 6m * 6m, before going to class in the morning of a summer day, excepting to find his/her room cooler when he/she returns at night.

  What percentage of removal should be expected for particles

Assume the settling tank behaves like an ideal sedimentation tank, what percentage of removal should be expected for particles with a settling velocity of 0.002 m/sec

  A circular drain pipe has a radius of 375 mm it conveys

a circular drain pipe has a radius of 375 mm. it conveys water 30 ordmc from location 1 to location 2 between which

  Determine what will be carbondioxide level 10 years later

Assume to just using coal as an electric energy source. Take efficency as %50 for average power plant.If the carbondioxide level is 400 ppm by volume now, what will be the carbondioxide level 10 years later

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