1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vekshin1
3 years ago
13

2. Determine the surface area of a primary settling tank sized to handle a maximum hourly flow of 0.570 m3/s at an overflow rate

of 60.0 m/d. If the effective tank depth is 3.0 m, what is the effective theoretical detention time
Engineering
2 answers:
Hitman42 [59]3 years ago
7 0

Answer:

The surface area of the primary settling tank is 0.0095 m^2.

The effective theoretical detention time is 0.05 s.

Explanation:

The surface area of the tank is calculated by dividing the volumetric flow rate by the overflow rate.

Volumetric flow rate = 0.570 m^3/s

Overflow rate = 60 m/s

Surface area = 0.570 m^3/s ÷ 60 m/s = 0.0095 m^2

Detention time is calculated by dividing the volume of the tank by the its volumetric flow rate

Volume of the tank = surface area × depth = 0.0095 m^2 × 3 m = 0.0285 m^3

Detention time = 0.0285 m^3 ÷ 0.570 m^3/s = 0.05 s

Yuki888 [10]3 years ago
7 0

Given Information:

overflow rate = v = 60 m/d

volumetric flow rate = Q = 0.570 m³/s

depth of tank = h = 3 m

Required Information:

detention time = θ = ?

Answer:

detention time = θ = 3 days or 1.2 hours or 72 minutes or 4.32x10³ seconds

Explanation:

We know that the detention time is given by

θ = V/Q

Where V is the volume of tank and Q is the volumetric flow rate of the tank.

To find out the volume of tank, first we have to find the surface area of the tank.

As we know the volumetric flow rate is given by

Q = Av

A = Q/v

Where A is the surface area of tank and v is the over flow rate and Q is the volumetric flow rate.

First convert the overflow rate from m/d into m/s

1 day has 24 hours, each hour has 60 minutes, each minute has 60 seconds.

v = 60/(24*60*60)

v = 6.94x10⁻⁴ m/s

A = Q/v

A = 0.570/6.94x10⁻⁴

A = 821.32 m²

The volume of tank is given by

V = A*h

V = 821.32*3

V = 2463.97 m³

Finally, the detention time is

θ = V/Q

θ = 2463.97/0.570

Detention time in seconds:

θ = 4.32x10³ seconds

Detention time in minutes:

θ = 4.32x10³/60 = 72 minutes

Detention time in hours:

θ = 72/60 = 1.2 hours

Detention time in days:

θ = 1.2/24 = 0.05 days

You might be interested in
What are the four causes of electrical faults?
Arada [10]

Answer:

Electrical faults are also caused due to human errors such as selecting improper rating of equipment or devices, forgetting metallic or electrical conducting parts after servicing or maintenance, switching the circuit while it is under servicing, etc.

Explanation:

6 0
3 years ago
16 . You are turning onto a two-lane road divided by a broken yellow line. You know immediately that:
Over [174]

When a person is turning onto a two-lane road divided by a broken yellow line, you know immediately that you are on a two-way road.

<h3>What is the road about?</h3>

Note that a Yellow centerlines can be seen in roads and it is one that is often used to separate traffic moving in different directions.

Note also that Broken lines can be crossed to allow slower-moving traffic and as such, When a person is turning onto a two-lane road divided by a broken yellow line, you know immediately that you are on a two-way road.

See full question below

You are turning onto a two-lane road divided by a broken yellow line. You know immediately that:

Answers

You are on a two-way road.

You are on a one-way road.

The road is under repair.

You must stay to the left of the broken yellow lines.

Learn more about  two-way road from

brainly.com/question/13123201

#SPJ2

5 0
1 year ago
Decide whether the function is an exponential growth or exponential decay function, and find the constant percentage rate of gro
sasho [114]

Answer:

Just answered this to confirm my profile.

Explanation:

I dont have a clue, this is just to confirm my profile.

8 0
3 years ago
6. What types of injuries can occur in an electronics lab and how can they be prevented?
marysya [2.9K]

Answer:

The most common injuries in a chemistry lab is making a fire, heat burns, chemical burns, cuts and scrapes, contamination, inhalation, and spills and breaks.

1.) You can prevent making a fire by making sure you close and seal flammable materials.

2.) You can prevent heat burns by teaching the students how to properly use tongs,water baths, and other cooling equipment. 

3.) You can prevent chemical burns by treating the chemicals with caution, measure carefully, and use the approved containers.

4.) You can prevent cuts and scrapes by telling the students how to use the blades safely, and also when they are disposing broken or sharp items they should know how to wrap them up so no one else will get hurt. 

5.) You can prevent contamination by washing your hands, protect their clothing and skin with a lab coat or a lab apron, gloves and glasses, and cleaning your area where the germs of the chemicals were so no one will become.

6.) You can prevent inhalation by opening up windows, using ventilation fans, and using an equipment that measures the amount of gas emission in a room.

7.) Finally, you can prevent spills and breaks by telling the students what will happen if anything spills, and tell them to clean up.  

8 0
3 years ago
Immediately remove the machine from service
My name is Ann [436]

Answer:

cellular service/data

Explanation:

Mobile Data and hotspot

3 0
1 year ago
Other questions:
  • 2. When manipulating your pedals, you should use your
    7·2 answers
  • For some transformation having kinetics that obey the Avrami equation , the parameter n is known to have a value of 1.1. If, aft
    6·1 answer
  • A general contractor has received plans for a new high-rise hotel in an urban area. The hotel will be 12 stories tall and will h
    14·1 answer
  • What are three automotive safety systems
    14·1 answer
  • Compute the volume percent of graphite, VGr, in a 2.5 wt% C cast iron, assuming that all the carbon exists as the graphite phase
    9·1 answer
  • Which of the following statements about pitot-static systems is FALSE? a). A pitot probe measures the Total Pressure of the free
    10·1 answer
  • When CO2 rises, temperature rises. Why do you think this is?
    15·1 answer
  • Diffrent ways to make a header above a window
    9·1 answer
  • What's the highest grade level that brainly accomodates
    12·1 answer
  • Reason fo I.EE regulations in electrical installations​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!