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

Calculate the uniform pressure on the soil, The plan of a proposed spoil he...

The plan of a proposed spoil heap is shown in Fig. The heap will stand on a thick deposit of soft clay with E-value 15 MN/m 2 . The uniform pressure on the soil may be suppose as 1

Functions of water stops in joints of box culverts, Question What will func...

Question What will functions of water stops in joints of box culverts and drainage channels ? Answer Principal function of water stops is to stop liquids, water-borne materials

Surveying, define principles of survey

define principles of survey

Passenger conveyors, Passenger Conveyors: Passenger conveyors are used...

Passenger Conveyors: Passenger conveyors are used at locations where a large concentration of passengers has to be moved from one place to another. Escalators are used to conv

Self compacting concrete, what will be the w/c ration and cement/fly ash ra...

what will be the w/c ration and cement/fly ash ration for the particular mix design

Explain rebound hammer - underwater non-destructive testing, Explain Reboun...

Explain Rebound Hammer - Underwater non-destructive testing? The underwater rebound hammer system is a surface hardness tester which can be employed to acquire a general condit

Calculate the total cost for the project, The total equipment cost for an a...

The total equipment cost for an addition to a pharmaceutical plant is estimated to be $5,000,000. The percentages provided in the Table represent the average expenditures in other

Functions of a column in a building, What are the functions of a column in ...

What are the functions of a column in a building? Ans) A column is used to handle the weight of the roof and/or the upper floors. Now days, many columns are used for decorative

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