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irga5000 [103]
3 years ago
10

If the sludge concentration in the return sludge line from the secondary clarifier were the same as the MLVSS concentration (XV)

, would recycle of return sludge increase the SRT?
Engineering
1 answer:
sergeinik [125]3 years ago
5 0

Answer:

It would decrease the SRT

Explanation:

The SRT is the average time it will take for the activated-sludge solids system to decompose. The concept is expressed in days. The retention time is a very important design and operational parameter in the design of an activated sludge digester. The make-up stream from the second clarifier contains a considerable amount of bacteria which are already active. Therefore, the synergistic action of the bacteria makes the sludge to be digested faster. This, In turn, reduces the time it takes to digest the sludge. Thus, the make-up stream lowers the retention time.

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choli [55]

Answer:

1st one.

Explanation:

I think that because they the one who is going to get a ticket and also you will not gonna get in a car accident.

7 0
3 years ago
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(c) As Engineering and Computing students, you must be familiar, with the respective professional bodies, as well as, Rules of P
guajiro [1.7K]

The professional ethics for computer engineers are:

  • They will Contribute to society and to human well-being.
  • They will  Avoid harm.
  • Be honest and trustworthy.
  • They will be fair and take action that do to discriminate others.

<h3>What are the Characteristics of Code of Ethics?</h3>

The code of ethics are known to be a kind of a universal moral values, that is one that state that what a person expect of any given employee such as been trustworthy, respectful, responsible, and others.

Note that Rules of Practice, Professional Obligations and Codes of Ethics. are known to be put in place to avoid issues that may lead to conflict.

Therefore, i believe that  As Engineering and Computing students, the respective professional bodies, Rules of Practice, Professional Obligations and Codes of Ethics are good and acts as a check and balance to us.

Therefore, The professional ethics for computer engineers are:

  • They will Contribute to society and to human well-being.
  • They will  Avoid harm.
  • Be honest and trustworthy.
  • They will be fair and take action that do to discriminate others.

Learn more about Engineering rules from

brainly.com/question/17169621

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4 0
1 year ago
Find the percent change in cutting speed required to give an 80% reduction in tool life when the value of n is 0.12.
vaieri [72.5K]

Answer:21.3%

Explanation:

Given

80 % reduction in tool life

According to Taylor's tool life

VT^n=c

where V is cutting velocity

T=tool life of tool

80 % tool life reduction i.e. New tool Life is 0.2T

Thus

VT^{0.12}=V'\left ( 0.2T\right )^{0.12}

V'=\frac{V}{0.2^{0.12}}

V'=\frac{V}{0.824}=1.213V

Thus a change of 21.3 %(increment) is required to reduce tool life by 80%

6 0
3 years ago
An engine cylinder has a stroke of 320mm and bore 280MM. Calculate the mass of air contained in the cylinder if it is filled wit
belka [17]

Answer:

The mass of the air is 0.0243 kg.

Explanation:

Step1

Given:

Stroke of the cylinder is 320 mm.

Bore of the cylinder is 280 mm.

Pressure of the air is 101.3 kpa.

Temperature of the air is 13°C.

Step2

Calculation:

Stroke volume of the cylinder is calculated as follows:

V=\frac{\pi }{4}d^{2}L

V=\frac{\pi}{4}\times(\frac{280}{1000})^{2}\times(\frac{320}{1000})

V = 0.0197 m³.

Step3

Assume air an ideal gas with gas constant 287 j/kgK. Then apply ideal gas equation for mass of the air as follows:

PV=mRT

m=\frac{PV}{RT}

m=\frac{101.3\times 1000\times 0.0197}{287\times (13+273)}

m= 0.0243 kg.

Thus, the mass of the air is 0.0243 kg.

4 0
3 years ago
What is FOLLOWING PROCEDURES
il63 [147K]

Answer:

When employees follow procedures, they perform tasks correctly and provide consistent customer service. This enhances the quality of your organization's products and services. And, in turn, improves your company's reputation. Employees can know they are fulfilling their roles and take pride in their work.

4 0
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