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The following data have been obtained in a bOD test that is made to determine how...
Two samples are brought to the laboratory for the BOD test. Please calculate BOD5 for both,...
Two samples are brought to the laboratory for the BOD test. Please calculate BOD5 for both, using laboratory DO data. a. For sample A, seeded BOD test was performed. The initial DO concentration in the BOD bottle, which was filled with 2 mL of sample and 298 mL of seeded dilution water, was 8.9 mg/L just after preparation. After an incubation period of five days, the final DO concentration was reported as 1.8 mg/L. Meanwhile, DO concentration in the seed...
You have collected water samples of the influent (raw sewage) and effluent (treated sewage) at Houston Wastewater Treatment Plant. You plan to conduct the BOD5 test to determine the BOD rate constant,...
You have collected water samples of the influent (raw sewage) and effluent (treated sewage) at Houston Wastewater Treatment Plant. You plan to conduct the BOD5 test to determine the BOD rate constant, k. A. Would you expect the rate constants to be the same or different in these two samples? If different, which would be higher and why? B. If the BOD5 for the raw sewage sample is 600 mg/L, and the ultimate BOD is 650 mg/L at 20oC, find...
5. The following data is for a BOD determination run on a raw sewage sample incubated...
5. The following data is for a BOD determination run on a raw sewage sample incubated for 5 days at 20°C in the dark; calculate the BOD5,20. Raw sewage contains a sufficient population of bacteria to conduct a BOD test. Therefore, this is an unseeded sample. Data: BOD bottle volume mL raw sewage added to BOD bottles DO, in bottle containing waste and dilution water DO in bottle containing waste and dilution water 300 mL 10.00 mL 7.70 mg/L 2.35...
7. A BOD test is run using 100 mL of treated wastewater effluent mixed with 200...
7. A BOD test is run using 100 mL of treated wastewater effluent mixed with 200 mL of dilution water (containing no BOD). The initial DO of the mix is 9.0 mg/L After 5 days, the DO is 4.0 mg/L. After a long period of time, the DO is 2.0 mg/L, and it no longer seems to be dropping. Assume nitrification has been inhibited so that only carbonaceous BOD is measured (a) What is the 5-day BOD of the wastewater?...
3. (6 pts) Raw wastewater with initial BOD5 = 265 mg/L is treated in Wastewater Treatment...
3. (6 pts) Raw wastewater with initial BOD5 = 265 mg/L is treated in Wastewater Treatment Plant (WWTP), which can remove 65% of initial BOD. Students were asked to run BODs tests on the treated wastewater AFTER treatment. They used standard 300 ml bottle a. Find the volume of treated wastewater that should be put in the bottle to make sure that DO after 5 days will be at least 2mg/L (assume initial DO = 9.2 mg/L; and the bottle...
Given the following BOD data: Time (days) Diluted sample DO (mg/l). 7.95 3.75 3.45 2.75 2.15...
Given the following BOD data: Time (days) Diluted sample DO (mg/l). 7.95 3.75 3.45 2.75 2.15 1.80 Blank seeded sample Do (mg/l) 8.15 8.1 8.05 8.0 7.95 7.9 Find the BOD at 5 days knowing that the diluted sample was diluted 100 times, i.e., P=1/100-volume wastewater/[volume of wastewater+dilution water (300 ml)).
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of...
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of raw wastewater to be treated is 20 MGD in the design year, the dissolved BODs is 380 mg/L, and SS is 360 mg/L. The wastewater generated by the sludge treatment process is about 4 MGD with the dissolved BODs being 1800 mg/L, and SS being 1200 mg/L, and will be returned to the wet well in the pumping station at the beginning of the...
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...
just #29 please im confused how to set the problem up ! Exp. Der 28 A...
just #29 please im confused how to set the problem up !
Exp. Der 28 A 198 lb adult is to be treated with IV ticarcillin disodium for bacterial septicemia. What is the daily dosage range in mg CAM for this patient? 22 of the drug is administered every 4 hours, what will the per dose being? Sa Do you need to question a per dose dosage of 4g of ticarcillin every 4 hours for this patient? OLMES...PL 210H TICARCILLIN...
Question 1. Why has this patient been taking sumatriptan as needed? (1 pts) Question 2. Does...
Question 1. Why has this patient been taking
sumatriptan as needed? (1 pts)
Question 2. Does this patient have lithium
toxicity? (1 pts)
Question 3. Identify two significant
risk factors for bipolar disorder (2 pts)
Question 4. Describe the two primary
types of bipolar disorder. (2 pts)
Question 5. Does this patient have any signs of
abnormal hepatic function? (1 pts)
Question 6. Identify two abnormal
blood laboratory test results and propose a reasonable explanation
for these results. (2 pts)...
5. The following data is for a BOD determination run on a raw sewage sample incubated for 5 days at 20°C in the dark; calculate the BOD5,20. Raw sewage contains a sufficient population of bacteria to conduct a BOD test. Therefore, this is an unseeded sample. Data: BOD bottle volume mL raw sewage added to BOD bottles DO, in bottle containing waste and dilution water DO in bottle containing waste and dilution water 300 mL 10.00 mL 7.70 mg/L 2.35...
7. A BOD test is run using 100 mL of treated wastewater effluent mixed with 200 mL of dilution water (containing no BOD). The initial DO of the mix is 9.0 mg/L After 5 days, the DO is 4.0 mg/L. After a long period of time, the DO is 2.0 mg/L, and it no longer seems to be dropping. Assume nitrification has been inhibited so that only carbonaceous BOD is measured (a) What is the 5-day BOD of the wastewater?...
3. (6 pts) Raw wastewater with initial BOD5 = 265 mg/L is treated in Wastewater Treatment Plant (WWTP), which can remove 65% of initial BOD. Students were asked to run BODs tests on the treated wastewater AFTER treatment. They used standard 300 ml bottle a. Find the volume of treated wastewater that should be put in the bottle to make sure that DO after 5 days will be at least 2mg/L (assume initial DO = 9.2 mg/L; and the bottle...
Given the following BOD data: Time (days) Diluted sample DO (mg/l). 7.95 3.75 3.45 2.75 2.15 1.80 Blank seeded sample Do (mg/l) 8.15 8.1 8.05 8.0 7.95 7.9 Find the BOD at 5 days knowing that the diluted sample was diluted 100 times, i.e., P=1/100-volume wastewater/[volume of wastewater+dilution water (300 ml)).
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of raw wastewater to be treated is 20 MGD in the design year, the dissolved BODs is 380 mg/L, and SS is 360 mg/L. The wastewater generated by the sludge treatment process is about 4 MGD with the dissolved BODs being 1800 mg/L, and SS being 1200 mg/L, and will be returned to the wet well in the pumping station at the beginning of the...
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...
just #29 please im confused how to set the problem up !
Exp. Der 28 A 198 lb adult is to be treated with IV ticarcillin disodium for bacterial septicemia. What is the daily dosage range in mg CAM for this patient? 22 of the drug is administered every 4 hours, what will the per dose being? Sa Do you need to question a per dose dosage of 4g of ticarcillin every 4 hours for this patient? OLMES...PL 210H TICARCILLIN...
Question 1. Why has this patient been taking
sumatriptan as needed? (1 pts)
Question 2. Does this patient have lithium
toxicity? (1 pts)
Question 3. Identify two significant
risk factors for bipolar disorder (2 pts)
Question 4. Describe the two primary
types of bipolar disorder. (2 pts)
Question 5. Does this patient have any signs of
abnormal hepatic function? (1 pts)
Question 6. Identify two abnormal
blood laboratory test results and propose a reasonable explanation
for these results. (2 pts)...
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