Question
In: Civil Engineering
A 3 diameter biotower has been designed to treat sewage from 22,000 PE.Influent BOD = 250mg/l...
A 3 diameter biotower has been designed to treat sewage from 22,000 PE.Influent BOD = 250mg/l and wastewater flow through the primary clarifier removes 35 percent of the BOD and the flows into the biotower the constant r andom media n= 0.44, recycle ratio = 2 and operating temperature =2500c.
a determine the reaction rate constant k25 if the existing BOD =50mg/l
b what would be the biotower effluent at 200c if the recycle ratio is increase to 4
Solutions
Ally Wells answered 11 months agoRelated Solutions
The ultimate BOD of a river just below a sewage outfall is 55.0 mg/L, and the...
The ultimate BOD of a river just below a sewage outfall is 55.0
mg/L, and the DO is at a saturation value of 12.0 mg/L. The
deoxygenation rate coefficient kd is 0.30/day, and the reaction
rate coefficient kr is 0.90/day. The river is flowing at the speed
if 52.0 miles per day. The only source of BOD on this river is this
single outfall.
Find the critical distance downstream at which DO is a
minimum.
Find the minimum DO.
If...
A new drug has been developed to treat a condition, and it is alleged to be...
A new drug has been developed to treat a condition, and it is
alleged to be more effective than traditional treatment. An
experiment will be conducted to test whether the claim is true. To
perform the hypothesis test, a 99% confidence level is selected for
the hypothesis test. The new drug will be administered to a sample
of 200 individuals with the condition, selected at random. Another
300 individuals are randomly selected to receive the traditional
treatment.
Of the 200...
A new drug has been developed to treat a particular condition, and it is alleged to...
A new drug has been developed to treat a particular condition,
and it is alleged to be more effective than traditional treatment.
An experiment will be conducted to test whether the claim is true.
To perform the hypothesis test, a 95% confidence level is selected
for the hypothesis test. The new drug will be administered to a
sample of 200 individuals with the condition, selected at random.
Another 300 individuals are randomly selected to receive the
traditional treatment.
Of the...
A new drug has been developed to treat a particular condition, and it is alleged to...
A new drug has been developed to treat a particular condition,
and it is alleged to be more effective than traditional treatment.
An experiment will be conducted to test whether the claim is true.
To perform the hypothesis test, a 99% confidence level is selected
for the hypothesis test. The new drug will be administered to a
sample of 200 individuals with the condition, selected at random.
Another 300 individuals are randomly selected to receive the
traditional treatment.
Of the...
A new drug has been developed to treat a particular condition, and it is alleged to...
A new drug has been developed to treat a particular condition,
and it is alleged to be more effective than traditional treatment.
An experiment will be conducted to test whether the claim is true.
To perform the hypothesis test, a 99% confidence level is selected
for the hypothesis test. The new drug will be administered to a
sample of 200 individuals with the condition, selected at random.
Another 300 individuals are randomly selected to receive the
traditional treatment.
Of the...
A new drug has been developed to treat a particular condition, and it is alleged to...
A new drug has been developed to treat a particular condition,
and it is alleged to be more effective than traditional treatment.
An experiment will be conducted to test whether the claim is true.
To perform the hypothesis test, a 95% confidence level is selected
for the hypothesis test. The new drug will be administered to a
sample of 200 individuals with the condition, selected at random.
Another 300 individuals are randomly selected to receive the
traditional treatment.
Of the...
A new drug has been developed to treat a particular condition, and it is alleged to...
A new drug has been developed to treat a particular condition,
and it is alleged to be more effective than traditional treatment.
An experiment will be conducted to test whether the claim is true.
To perform the hypothesis test, a 99% confidence level is selected
for the hypothesis test. The new drug will be administered to a
sample of 200 individuals with the condition, selected at random.
Another 300 individuals are randomly selected to receive the
traditional treatment.
Of the...
A new drug has been developed to treat a particular condition, and it is alleged to...
A new drug has been developed to treat a particular condition,
and it is alleged to be more effective than traditional treatment.
An experiment will be conducted to test whether the statement is
true. To perform a hypothesis test, a confidence level of 99% is
selected for the hypothesis test. The new drug was administered to
a sample of 200 individuals with the condition, selected at random,
another 300 individuals were selected to whom the traditional
treatment was administered. Of...
A new drug has been developed to treat a particular condition, and it is alleged to...
A new drug has been developed to treat a particular condition,
and it is alleged to be more effective than traditional treatment.
An experiment will be conducted to test whether the statement is
true. To perform the hypothesis test, a confidence level of 99% is
selected for the hypothesis test. The new drug will be administered
to a sample of 200 individuals with the condition, selected at
random. An additional 300 individuals will be randomly selected and
will be administer...
A 1.5-in-diameter bar has been machined from an AISI 1050 cold-drawn bar. This part is to...
A 1.5-in-diameter bar has been machined from an AISI 1050
cold-drawn bar. This part is to withstand a fluctuating tensile
load varying from 0 to 62 kip. Because of the ends, and the fillet
radius, a fatigue stress-concentration factor Kf is 1.85 for 106 or
larger life. Estimate the fatigue factor of safety based on
achieving infinite life (use Modified Goodman criteria) and the
yielding factor of safety. If infinite life is not predicted,
estimate the number of cycles to...
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