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

Gts bench mark, Gts bench mark in thane district maharashtra

Gts bench mark in thane district maharashtra

Surveying, rectangular grid method for representing contours

rectangular grid method for representing contours

Define hand tools for underwater inspection of bridge, Define Hand Tools fo...

Define Hand Tools for Underwater Inspection of Bridge? Hand tools involve scrapers, wire brushes, chain and wire ropes. Tools of this kind are suited in which cleaning is confi

Seminar class, I have a writing that needs to be corrected

I have a writing that needs to be corrected

Define alkali aggregate reaction - chemical deterioration, Define Alkali Ag...

Define Alkali Aggregate Reaction - Chemical deterioration? Sometimes high alkali cement reacts with minerals in certain aggregates and forms expansive compounds resulting into

Explain civil fe hydraulics and hydrologic systems, Explain Civil Fe Hydrau...

Explain Civil Fe Hydraulics and Hydrologic Systems When spills occur at grade on soils in areas where unconfined aquifers are present, remediation procedures to remove the poll

What is thermodynamics?, Thermodynamics is concerned with the conversion of...

Thermodynamics is concerned with the conversion ofheat into mechanical energy or vice versa.  Heat usually generated through combustion of fossil fuelor nuclear reaction. Exa

Road drainage and maintenance, Road Drainage and Maintenance: The life...

Road Drainage and Maintenance: The life of a road depends upon how well and quickly the water is drained away from its various components. Similarly, regular and periodic insp

Explain national priorities list (npl) - hazardous waste, Explain National ...

Explain National Priorities List (NPL) - Also known as superfund list - Identify sites which appear to present a significant risk to public health or the environment (Throug

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