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
photoshop1234 [79]
1 year ago
14

The town of Camp Verde has been directed to upgrade its primary WWTP to a secondary plant that can meet an effluent standard of

25.0 mg/L BOD5 and 30 mg/L suspended solids. They have selected a completely mixed activated sludge system for the upgrade. The existing primary treatment plant has a flow rate of 2,506 m3/d. The effluent from the primary tank has a BOD5 of 240 mg/L. Using the following assumptions, estimate the required volume of the aeration tank:
BOD5 of the effluent suspended solids is 70% of the allowable suspended solids concentration.
Growth constant values are estimated to be: Ks = 100 mg/L BOD5; kd = 0.025 d–1; μm = 10 d–1; Y = 0.8 mg VSS/mg BOD5 removed.
The design MLVSS is 3,000 mg/L.
Engineering
1 answer:
Artist 52 [7]1 year ago
4 0

For efficient treatment, the dissolved oxygen concentration in the aeration tank must be kept between 1-3 mg/L. The microbial biomass will die at low DO levels, and it will take time and money to rebuild it.

The depth, which normally ranges from 3 to 4.5 meters, determines how effectively air is aerated. The breadth, which is typically maintained between 5 and 10 meters, regulates the mixing. The ideal width-to-depth ratio is 1.2 to 2.2. The distance shouldn't be shorter than 30 meters or longer than 100 meters. Bacteria used in wastewater treatment and stabilization are given oxygen by aeration. The bacteria require oxygen for biodegradation to take place.

Learn more about efficient here-

brainly.com/question/13154811

#SPJ4

You might be interested in
Guys, can you rate this toolbox, please. It is my DT project, made for car trips, what do you think of the idea/design/usability
Maurinko [17]

Answer:

Honestly overall i think it looks fantastic

Explanation:

It looks like some really nice clean craftsmanship and i love the use of some different colors for some drawers to make it pop. the only con that i can possibly think of is that with it being wood and you moving it from place to place, some rubber feet or something that would prevent it from scratching/damaging anything else if it doesn't already (cant really see under it). other then that one thing i think it looks really good. well done.

3 0
3 years ago
(a) Draw the Moore finite state machine (FSM) of an electronic combination lock with a RESET button, two number buttons (0 and 1
Dafna11 [192]

Answer:

Explanation:

There are a total of 6 states and 3 bits in this problem. Whenever the Reset button is pressed, RESET state is called otherwise the state according to the diagram is called. For the combination to be "01011", the input sequence has to be in the same order. If 0 is pressed instead of 1 in state "010", the last state of output ending with 0 will be called and likewise in all the states that follow.

7 0
3 years ago
Controlling your vehicle
Ratling [72]

Answer:

5. D

6. c

7. d

Explanation:

3 0
3 years ago
Harmonic excitation of motion is represent as
Gennadij [26K]

Harmonic excitation refers to a sinusoidal external force of a certain frequency applied to a system. ... Resonance occurs when the external excitation has the same frequency as the natural frequency of the system. It leads to large displacements and can cause a system to exceed its elastic range and fail structurally.

6 0
3 years ago
Can the MOXIE created by NASA be used on earth
Alisiya [41]

Answer:

MOXIE is designed to generate up to 10 grams of oxygen per hour. This technology demonstration was designed to ensure the instrument survived the launch from Earth, a nearly seven-month journey through deep space, and touchdown with Perseverance on Feb

4 0
3 years ago
Other questions:
  • A PV battery system has an end-to-end efficiency of 77%. The system is used to run an all-AC load that is run only at night. The
    11·1 answer
  • Linear Time Invariant Systems For each of the systems below an input x(t) and the output y(t) are plotted. Determine whether eac
    5·1 answer
  • Consider the following program:
    15·1 answer
  • Answer the following questions, and very briefly explain your answer:
    5·1 answer
  • Calculate the reactions at 4 ends (supports) of this bookshelf. Assume that the weight of each book is approximately 1 lb. The w
    13·1 answer
  • What is a Planck Distribution and how is it used to solve for black body radiation problems?
    12·1 answer
  • PLEASE HELP
    15·2 answers
  • 3. A steel pipe of outside diameter 20 mm and thickness 3 mm is
    14·1 answer
  • The team needs to choose a primary view for the part drawing. Three team members make suggestions:
    10·1 answer
  • Write a SELECT statement that returns these four columns:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!