Design an equalization basin with a safety factor, Civil Engineering

Assignment Help:

A storm occurs with rain of varying intensity falling over a commercial area. The area has a combined sewer system. Two interceptor sewers direct flow to the wastewater treatment plant (WWTP). The hourly flow volumes measured in the two interceptor sewers immediately upstream of the WWTP are listed in the table below. The WWTP has a peak flow capacity of 12.5 MG/hr. Using the data generated for this storm:

1885_Design an equalization basin with a safety factor.png

1) Design an equalization basin with a safety factor of 1.2 to store the excess flow for later treatment, thus preventing a combined sewer overflow of untreated wastewater to the environment;

2) Determine the hour during which the peak MG above the plant capacity occurs.

Solution:

1) Plotting the straight, constant sloped cumulative capacity line, and the curved total interceptor volume line results in data producing the last column in the table "Net + or - MG". This data represents the position of the cumulative interceptor MG, either above or below the cumulative plant capacity line. The greatest variance in cumulative hourly data (net MG) occurs between hour 1and hour 3 (- 0.5 and + 1.2). The equalization basin volume needed to prevent a combined sewer overflow during this storm is 1.7 MG. With a safety factor of 1.2, design for (1.7 MG) (1.2) = 2.0 MG basin.

2) Peak MG above the plant capacity occurs at hour 2 (14.0 MG vs. 12.5 MG).

919_Design an equalization basin with a safety factor 1.png


Related Discussions:- Design an equalization basin with a safety factor

Cement, Ask What is the density of cement?

Ask What is the density of cement?

Calculate the amount of cubic yards of soil, A proposed building site requi...

A proposed building site requires 135,000-ft 3 of imported fill.  A borrow site is located 5-miles Northeast of the project site where the soil has a shrinkage of 16%.  The amount

Fire resistance of steelwork, Q. Fire resistance of steelwork Because ...

Q. Fire resistance of steelwork Because of the high thermal conductivity of steel, temperature of unprotected steel is almost the same as temperature of fire. Because the yiel

What is floating foundation, Explain the procedure of determining the safe ...

Explain the procedure of determining the safe bearing capacity based on the standard penetration test. Write short note on (i) Floating foundation and (ii) Factors affecti

Building, individual wall methods benefits?

individual wall methods benefits?

Explain the statements about construction contract process, Explain the Sta...

Explain the Statements about the Construction Contract Process I. Surety bond assures the project owner a guarantee of funds equivalent to a promissory note. The surety bond is

Reverse and direct circulation drill drilling in piling, Q. Reverse and dir...

Q. Reverse and direct circulation drill drilling in piling? For reverse circulation drilling and direct circulation drilling, major difference in drilling method is connected t

List the significant engineering classification system, How do you distingu...

How do you distinguish among clay and silt in the field? State the purpose of identification and categorization of soils. List any three significant engineering classification syst

Define the statements about error analysis, Define the statements about err...

Define the statements about error analysis? I.  The expected value (or: most likely; probable value) of a measurement is the value that has the highest value of being correct.

Write Your Message!

Captcha
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