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6.10. Given the following conditions for a river receiving a waste input from a single point...
Determine the minimum dissolved oxygen (DO) concentration in a river downstream from a wastewater treatment plant (W...
Determine the minimum dissolved oxygen (DO) concentration in a river downstream from a wastewater treatment plant (WWTP) discharging at a flow rate of 5.00 million gallons per day (MGD). The WWTP achieves secondary treatment standards (BOD5 = 30 mg/L). The wastewater temperature is 25.0 °C and contains 4.0 mg/L of DO. The characteristics of the river upstream from the point of discharge are Q=20.0 cubic feet per second (cfs), T = 20.0°C, BODu = 3.0 mg/L. and DO = 7.0...
209 Wed 22 May 4A plant that purifies its liquid waste discharges the treated waste into a local river. An environ...
209 Wed 22 May 4A plant that purifies its liquid waste discharges the treated waste into a local river. An environmental protection agency inspector has collected twelve water specimens. The bacteria counts for each of the 12 specimens (6 at the discharge point of the plant and 6 at an upstream location) are reported in the following table. 30 36 Discharge at the plant 29 30 26 31 32 (a) Calculate a 90% confidence interval for the population mean of...
is proposed to discharge a wastewater to a small river (wastewater and river characteristics given below)....
is proposed to discharge a wastewater to a small river (wastewater and river characteristics given below). The temperature of the river and wastewater i and velocity downstream of the discharge is 1.5 m/s. Saturation DO concentr:a 25°C is 8.2 mg/L 2. It s 25°C, Wastewater 1.5 w 31.5 6.1 River Parameter Flow (m/s) BODu( mg/L) DO (mg/L) negligible 8.0 kra20c 0.41 day kd@20c = 0.26 day. Determine: a. Ultimate BOD just downstream of the point of discharge (8 pts) b....
Seawater+Wastewater mixing (Water pollution)
Example 7.15: According to the following information, determine whether a fish, which requires 6 \(\mathrm{mg} / \mathrm{L}\) dissolved oxygen, would survive in the river.Given:Waste water flow rate \(\left(\mathrm{Q}_{w}\right)=1.2 \mathrm{~m}^{3} / \mathrm{s}\)River flow rate \(\left(\mathrm{Q}_{r}\right)=10 \mathrm{~m}^{3} / \mathrm{s}\)River temperature \(\left(T_{r}\right)=15^{\circ} \mathrm{C}\)River ultimate \(\mathrm{BOD}\left(\mathrm{BOD}_{r}\right)=2.3 \mathrm{mg} / 1\)River reaeration rate \(=0.4\) per day for BOD testBOD concentration was initially \(9 \mathrm{mg} / \mathrm{l}\), after 5 days was \(6 \mathrm{mg} / 1\) and after an indefinitely long period of time was \(2.5 \mathrm{mg} /...
QUESTION 3 a) After a point of wastewater discharge, the dissolved oxygen (DO) concentration is found...
QUESTION 3 a) After a point of wastewater discharge, the dissolved oxygen (DO) concentration is found as 83.33% of the saturation DO. The remaining BOD after 5 days at the point of discharge is 10.13 mg/L. The BOD rate constant determined in the laboratory under standard conditions is 0.115/day. The saturation DO concentration in the river water is 9 mg/L. The deoxygenation and the reaeration rate coefficients are 0.25/day and 0.45/day, respectively. The river travels at a velocity of 0.12...
(t point) The Wolf River in Tennessee flows pastan abandoned site once used by the pesticide...
(t point) The Wolf River in Tennessee flows pastan abandoned site once used by the pesticide industry for dumping wastes including chordane, aldrin, and diedrin. These highly toxic organic compounds can cause various cancers and birth defects. The standard method to test whether these poisons are present in a river is to take samples attenth depth (c. depths that are six-tenths of the way from the surface to the bottom. The organic compounds in question are denser than water, and...
photos for each question are all in a row (1 point) In the following questions, use...
photos for each question are all in a row
(1 point) In the following questions, use the normal distribution to find a confidence interval for a difference in proportions pu - P2 given the relevant sample results. Give the best point estimate for p. - P2, the margin of error, and the confidence interval. Assume the results come from random samples. Give your answers to 4 decimal places. 300. Use 1. A 80% interval for pı - P2 given that...
Suppose you are given the following production function Q= 21x + 9x2-x3 Compose a table calculating...
Suppose you are given the following production function
Q= 21x + 9x2-x3
Compose a table calculating the Total Product (Q), Marginal
Product (MP) and Average Product (AP), for x ranging from 0 to 9
units.
Using the information from the table, graph these individual
curves and identify the rate of which diminishing marginal returns
are evident. Delineate the stages of production and
explain why Stages I and III are considered as
irrational whereas Stage II is termed as rational. What...
Write the following functions, as defined by the given IPO comments. Remember to include the IPO...
Write the following functions, as defined by the given IPO comments. Remember to include the IPO comments in your submission. Be sure to test your code -- you can use the examples given for each function, but you should probably test additional examples as well -- and then comment-out or remove your testing code from your submission!. We will be testing your functions using a separate program, and if your own testing code runs when we load your file it...
reply ma as soon as possible 120 points total Due: October 23, 2019 Budget your time...
reply ma as soon as possible
120 points total Due: October 23, 2019 Budget your time carefully TRUE OR FALSE (45 points - 3 points cach): Mark whether the statements as written are "true" or "false". If the statement is false, make minor changes to the statement so that the statement is true. The primary adverse health effect resulting from the disposal of mercury wastes into Minamata Bay was dysentery The flow regime in horizontal velocity grit chambers approaches continuous...
Determine the minimum dissolved oxygen (DO) concentration in a river downstream from a wastewater treatment plant (WWTP) discharging at a flow rate of 5.00 million gallons per day (MGD). The WWTP achieves secondary treatment standards (BOD5 = 30 mg/L). The wastewater temperature is 25.0 °C and contains 4.0 mg/L of DO. The characteristics of the river upstream from the point of discharge are Q=20.0 cubic feet per second (cfs), T = 20.0°C, BODu = 3.0 mg/L. and DO = 7.0...
209 Wed 22 May 4A plant that purifies its liquid waste discharges the treated waste into a local river. An environmental protection agency inspector has collected twelve water specimens. The bacteria counts for each of the 12 specimens (6 at the discharge point of the plant and 6 at an upstream location) are reported in the following table. 30 36 Discharge at the plant 29 30 26 31 32 (a) Calculate a 90% confidence interval for the population mean of...
is proposed to discharge a wastewater to a small river (wastewater and river characteristics given below). The temperature of the river and wastewater i and velocity downstream of the discharge is 1.5 m/s. Saturation DO concentr:a 25°C is 8.2 mg/L 2. It s 25°C, Wastewater 1.5 w 31.5 6.1 River Parameter Flow (m/s) BODu( mg/L) DO (mg/L) negligible 8.0 kra20c 0.41 day kd@20c = 0.26 day. Determine: a. Ultimate BOD just downstream of the point of discharge (8 pts) b....
QUESTION 3 a) After a point of wastewater discharge, the dissolved oxygen (DO) concentration is found as 83.33% of the saturation DO. The remaining BOD after 5 days at the point of discharge is 10.13 mg/L. The BOD rate constant determined in the laboratory under standard conditions is 0.115/day. The saturation DO concentration in the river water is 9 mg/L. The deoxygenation and the reaeration rate coefficients are 0.25/day and 0.45/day, respectively. The river travels at a velocity of 0.12...
(t point) The Wolf River in Tennessee flows pastan abandoned site once used by the pesticide industry for dumping wastes including chordane, aldrin, and diedrin. These highly toxic organic compounds can cause various cancers and birth defects. The standard method to test whether these poisons are present in a river is to take samples attenth depth (c. depths that are six-tenths of the way from the surface to the bottom. The organic compounds in question are denser than water, and...
photos for each question are all in a row
(1 point) In the following questions, use the normal distribution to find a confidence interval for a difference in proportions pu - P2 given the relevant sample results. Give the best point estimate for p. - P2, the margin of error, and the confidence interval. Assume the results come from random samples. Give your answers to 4 decimal places. 300. Use 1. A 80% interval for pı - P2 given that...
Suppose you are given the following production function
Q= 21x + 9x2-x3
Compose a table calculating the Total Product (Q), Marginal
Product (MP) and Average Product (AP), for x ranging from 0 to 9
units.
Using the information from the table, graph these individual
curves and identify the rate of which diminishing marginal returns
are evident. Delineate the stages of production and
explain why Stages I and III are considered as
irrational whereas Stage II is termed as rational. What...
reply ma as soon as possible
120 points total Due: October 23, 2019 Budget your time carefully TRUE OR FALSE (45 points - 3 points cach): Mark whether the statements as written are "true" or "false". If the statement is false, make minor changes to the statement so that the statement is true. The primary adverse health effect resulting from the disposal of mercury wastes into Minamata Bay was dysentery The flow regime in horizontal velocity grit chambers approaches continuous...
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