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

  Determine station of pvc and pvt and design speed of curve

An equal-tangent crest vertical curve connects a +3.2% and -1.1% grade. The PVI is at station 98+20. Due to drainage considerations, the highest point of the curve is at station 100+79.35.

  Find the velocity at which shuttle hits the player bs racket

In Singles badminton game, shuttle is smashed by Player A from close to base line, which is 6 m from the net. Height of the net to be cleared by a smash is 1.55 m. The shuttle is hit by player A at a speed of 250 km/h.

  Calculate the mass emissions rate of no2

Assuming that the average stack gas velocity is 10.0m/s and the stack is circular with a 3.0 meter diameter, calculate the mass emissions rate of NO2 in kg/day.

  Why is granular activated carbon used to treat wastewater

Why is granular activated carbon(GAC) used to treat the industrial wastewater stream but not the domestic wastewater stream

  Determine the dimension of k in terms of the base dimensions

when a force F acts on a linear spring, the elongation x of the spring is given by F=kx, where K is called the stiffness of the spring. Determine the dimension of K in terms of the base dimensions of an absolute system of units

  Find the amount of work in foot-pounds required to empty

The vertical cross-section of the trough parallel to an end is shaped like the graph of y=x6 from x=-1 to x=1 . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by pumping the water over the top.

  Determine how man n of water must be added to the sample

A moist soil sample weighing 22.2 N has a moisture content of 20%. How man N of water must be added to the sample to increase the moisture content to 30%

  Determine the coordinates of intersection of line of action

Replace the given forces by a wrench and determine the coordinates of the intersection of its line of action (the coordinate of point P) with the plate. With a Force Fca=(100i+100j)N coming off of point C

  What average force was exerted on the ball

After falling from rest from a height of 32 m, a 0.45 kg ball rebounds upward, reaching a height of 22 m. If the contact between ball and ground lasted 1.5 ms, what average force was exerted on the ball?

  Estimate the design capacity of the pile group

A pile group consist of four piles in cohesive soil. Each pile's diameter is 0.4 m, and center to center spacing is 1.2 m. The ultimate capacity of each pile is 300 kN. Estimate the design capacity of the pile group, using a factor of safety of 2

  Depict a decision tree

The mine's operating costs were projected at $900,000 per year including $400,000 of fixed costs and $500,000 of variable costs. Ms. Peru thought these forecasts accurate.

  Volume of soil-excavated from the borrow pit

The volume of fill required is 2500 cubic meters. Find the volume of soil that must be excavated from the borrow pit to furnish the required volume of fill. (in cubic meters).

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