The correct answer is option A that is Anatomist
An anatomist specializes in function of structure of body.
Pathologist specializes in tissue sample study.
Physiologist specializes in function of structure of body.
Cytologist specializes in structure and function of cells.
An) specializes in the structure of the bod Oa.anatomist O b.pathologist o c. physiologist o d.cytologist
A wastewater sample has a temperature of 10 °C. The 5-day BOD (BOD) of the wastewater sample is determined as 120 mg/L at 10 °C, and the BOD decay constant (k) is known as 0.20 day 1 at 20°C. Calculate the BOD decay constant (k) at 10 °C.
1. (30 points) Determine the 1-day BOD (BOD) and ultimate CBOD (BOD, or Lo) for a wastewater whose 5-day BOD at 20 °C is 200 mg/L, when -0.23 day.
2. To determine the BOD in an industrial wastewater sample, a seeded BOD analysis was conducted; data are summarized in the table below. Ten mL of wastewater was added per 300 mL bottle to determine the dissolved oxygen demand of the aged, settled wastewater seed (test A). The seeded test bottles (test B) contained 2.5 mL of industrial wastewater and 1.2 mL of seed wastewater a) What is the five-day BOD in this industrial wastewater? What is the k-value using...
Calculate BOD loading, hydraulic loading, BOD removal efficiency, and effluent BOD concentration for a single-stage trickling filter based on the following data: Average raw wastewater flow = 500 gpm Recirculation ration = 0.3 Primary effluent = 150 mg/L Diameter of filter = 20 meter Depth of media = 3 meter Wastewater temperature = 22 °C
1. Calculate (a) BODs, (b) Le or BOD and (c) plot the O2 consumed vs time for the DO data shown below in a BOD bottle. Additionally, clearly show BODs, L. or BODult, and organic matter remaining in the plot. Time (days) DO (mg/L) 7.5 6.6 5.2 4.8 3.8 Ans.: (a) 3.4 mg/L, (b) 6.2 mg/L, (e) Plot of O, consume vs. time
Question 3: n a batch reactor, the concentration of BoD decreases as the outcome of water treatment. The BOd values of water (a concentration) at different times were measured and the results are reported in the following table a. Graphically detemine the order of the reaction. b. caleulate the rate constant of the reaction (report its unit too) c. f allowable concentration of BoD is 3o mg/l, determine (mathematicaluly) how much time is required to reach this BOD Level (Hint:...
Consider the BOD data below (no dilution,no seed). a. What is the ultimate carbonaceous BOD? b. What might have caused the lag at the beginning of the test? c. Calculate k’, (the reaction rate constant). Day DO(mg/L) ~~ 0 8 1 8 3 75 6.5 7 6 15 ...
(a)The 5-day BOD of a sewage sample is 180 mg/L at 15°C. What is the BODu when k is 0.52 d-1 at 25°C? (use the Arrhenius equation, kt2=kt1?t2-t1 where ?=1.135 for 4-20°C and 1.056 for 20 -30°C (b)Graph the BOD as a function of time for the previous problem for both 15°C and 25°C. What do you observe?
2. The 5-day, 20°C BOD of a wastewater (K 0.23/day, 0 1.047) is 185 mg/L. What is the corresponding 10-day demand and ultimate BOD (in mg/L)? If the bottle had been incubated at 33°C, what would the 5-day BOD value have been?
Question 5. In R there is a dataset called BOD. For more information type help(BOD) in R. We wish to build a regression line between Time (as the explanatory variate) and demand (as the response). Part A. Formally test whether the slope differs from zero. Use the 4 steps of an hypothesis test. Part B. Build a 95% confidence interval for the slope parameter. Part C. What can be said about the correlation between Time and demand?