7-9. What is the BOD5 of a waste that yields an oxygen consumption of 2.00 mg/L from a 1.00 percent sample? Answer: BOD₂ = 200 mg/L 7-10. What sample size (in percent) is required for a BOD5 of 350.0 mg/L 7-5. If the BOD of a municipal wastewater at the end of 7 days is 60.0 mg/L and the ultimate BOD is 85.0 mg/L, what is the rate constant? Assume the temperature is 20°C. 6-51. Assuming a conservative value for an overflow rate, determine the surface area (in m²) of each of two sedimentation tanks that together must handle a flow of 0.05162 m³/s of lime softening floc. 6-52. Repeat Problem 6-51 for an alum or iron floc. 6-53. Two sedimentation tanks operate in parallel. The combined flow to the two tanks is 0.1000 m³/s. The depth of each tank is 2.00 m and each has a detention time of 4.00 h. What is the surface area of each tank and what is the overflow rate of each tank in m³/d · m²? 6-47. If the flow rate of the original plant in Problem 6-44 is increased from 0.150 m³/s to 0.200 m³/s, what percent removal of particles would be expected? 6-48. If the flow rate of the original plant in Problem 6-45 is doubled, what percent removal of particles would be expected? 6-44. If the settling velocity of a particle is 0.70 cm/s and the overflow rate of a horizontal flow clarifier is 0.80 cm/s, what percent of the particles are retained in the clarifier?

Solved: 7-9. What is the BOD5 of a waste that yields an oxygen consumption of

Home
questions and answers
7 9 what is the bod5 of a waste that yields an oxygen consumption of 2

Question

7-9. What is the BOD5 of a waste that yields an oxygen consumption of 2.00 mg/L from a 1.00 percent sample? Answer: BOD₂ = 200 mg/L 7-10. What sample size (in percent) is required for a BOD5 of 350.0 mg/L 7-5. If the BOD of a municipal wastewater at the end of 7 days is 60.0 mg/L and the ultimate BOD is 85.0 mg/L, wha