Calculate the surface area required for a stabilization pond

Assignment Help Civil Engineering
Reference no: EM13318725

Calculate the surface area required for a stabilization pond to serve a domestic population of 1000. Assume 80 gpcd at 210 mg/l of BOD. Use a design loading of 20 lb of BOD/acre/day. If the average liquid depth is 4 ft, calculate the retention time of the wastewater based on influent flow. The effluent is spread on grassland by spray irrigation at a rate of 2.0 in/week (54,300 gal/acre/wk). Compute the land area required for land disposal. In these computations, assume no evaporation or seepage losses from the ponds.

Reference no: EM13318725

Questions Cloud

Estimate the tension in the rope : Consider a beam as shown in the figure that is 2 m long and supported by a rope. It is pressed against the wall. what is the tension in the rope
Determine volume of three identical activated sludge tanks : Determine the volume of three identical activated sludge tanks following primary clarification to aerate 36,000 m cubed/d with a BOD concentration of 180 mg/l at a BOD loading of 560 g/m cubed*d.
Calculate the resistance of the lamp : A 0.75 H inductor is in series with a fluorescent lamp, and the series combination is across the 120 V rms, 60 Hz power line. Calculate the resistance of the lamp
Determine the activated sludge aeration volume required : Determine the activated sludge aeration volume required to treat 2.64 mgd with a BOD of 120 mg/l based on the criteria of a maximum BOD loading of 40 lb/1000 ft cubed/day and a minimum aeration period of 5 hr.
Calculate the surface area required for a stabilization pond : Calculate the surface area required for a stabilization pond to serve a domestic population of 1000. Assume 80 gpcd at 210 mg/l of BOD. Use a design loading of 20 lb of BOD/acre/day.
Calculate the bod loading and days of winter storage : Calculate the BOD loading and days of winter storage available between the 0.6 and 1.5 m depths, assuming a daily water loss of 0.30 cm by evaporation and seepage.
What is the minimum non zero thickness of the oil : A thin layer of oil (n=1.25) is floating on water (n=1.33). What is the minimum non zero thickness of the oil in the region
Why sludge system is operated at relatively low flood ratio : State the two main reasons why an activated sludge system is operated at a relatively low food/microorganism ratio.
Calculate the diameter of the hole : A large storage tank, open to the atmosphere at the top and filled with water, calculate The diameter of the hole

Reviews

Write a Review

Civil Engineering Questions & Answers

  Calculate the critical radius and the number of atoms

Calculate the critical radius and the number of atoms in the nucleus of the homogeneous nucleation in GERMANIUM. The latent heat of fusion is 8100 cal per g-mile (atom) and the coefficient of linear expansion is 5.75*10^-6 per K

  Sketch process on p-v diagram clearly labeling final states

5 Kg of water at 1.2 MPa, 120oC is contained in a frictionless piston-cylinder device. The water is heated until its temperature reaches 250oC. a) a)Determine the work performed in kJ

  Determine the normal stress in a soccer ball at pressure

Determine the normal stress in a soccer ball if the internal pressure is 110 kPa, the outside diameter is 220mm and the wall thickness is 3mm .

  Determine the mass of neon in a vertical cylinder

Neon gas at 50 degrees C in a vertical cylinder of diameter 150 mm has a 6 kg frictionless piston mounted. The outside pressure is 98kPa and the neon volume is 4000cm^3. Find the mass of neon.

  Determine the velocity of the solid sphere

A solid steel sphere with a specific gravity of 7.85 and diameter of 0.02 m is falling at its terminal velocity through water at 25 °C. Using either trial-and-error or a graphical approach, determine the velocity of the sphere

  Determine the thickness of the laminar sublayer

For the fully developed flow of water in a smooth 0.15-m pipe at a rate of 0:006m3/s, determine the thickness of a. the laminar sublayer; b. the buffer layer; c. the turbulent core.

  Velocity and acceleration of the flow

The volume flow rate of streams into the pipe is given by QA = 0.02t m 3 /s and that of stream B by QB = 0.008t 2 m 3 /s, where t is in seconds. The exit area of the pipe is 0.01m 2 . Find velocity and acceleration of the flow at exit at t = 1s.

  Four-lane highway for adequate ssd

A horizontal curve was designed for a four-lane highway for adequate SSD. Lane widths are 12 feet, and the superelevation is 0.06 and was set assuming maximum fx.

  Determine the magnitude and direction of the resultant

Part of the roof of a sports stadium is to be supported by the cables AB and AC. The forces the cables exert on the pylon A to which they are attached are represented by the vectors FAB and FAC.

  Determine the weight of the gate to open

Given that the gate is 3 m wide and will just start to open when water height reaches 6 m, determine the weight of the gate.

  Find respective probabilities with each of possible values

On a 20 ft cantilever beam, Load W1=200 or W2=500 or both may be applied at the midpoint B or at the end of the beam C. The bending moment induced at th fixed support A, MA, will depend on the magnitude of the loads at B and C.

  Discuss the situation where tertiary treatment is required

Biological treatment processes for wastewater can be categorised as dispersed growth and attached growth systems. Discuss the advantages and disadvantages of attached growth systems over dispersed growth systems.

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