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Questions and Answers
What does BOD5 measure?
What does BOD5 measure?
- The total oxygen content in a water and wastewater sample
- The theoretical oxygen demand of a water and wastewater sample
- The amount of dissolved oxygen needed by aerobic organisms in a wastewater body to break down organic material (correct)
- The concentration of inorganic matter in a wastewater sample
What is the temperature at which the BOD5 test is typically performed?
What is the temperature at which the BOD5 test is typically performed?
- 15°C
- 25°C
- 30°C
- 20°C (correct)
What does the BOD test measure?
What does the BOD test measure?
- The total oxygen content in a water and wastewater sample
- The dissolved oxygen used by microorganisms in the biochemical oxidation of organic matter in waste (correct)
- The concentration of inorganic matter in a wastewater sample
- The theoretical oxygen demand of a water and wastewater sample
What are BOD test results used for?
What are BOD test results used for?
What does BOD measure?
What does BOD measure?
What does seeding provide in BOD testing?
What does seeding provide in BOD testing?
What is the temperature for determining BOD?
What is the temperature for determining BOD?
What is used for seeding in BOD testing?
What is used for seeding in BOD testing?
How long is the incubation period for BOD testing?
How long is the incubation period for BOD testing?
What does BOD stand for?
What does BOD stand for?
What is the BOD bottle's volume for placing the sample?
What is the BOD bottle's volume for placing the sample?
What kind of function models BOD reactions?
What kind of function models BOD reactions?
What is the main limitation of BOD testing?
What is the main limitation of BOD testing?
What is BOD calculated using?
What is BOD calculated using?
Which substance can be used for seeding in BOD testing?
Which substance can be used for seeding in BOD testing?
What percentage of total BOD is exerted in 5 days?
What percentage of total BOD is exerted in 5 days?
Flashcards
What does BOD5 measure?
What does BOD5 measure?
The amount of dissolved oxygen needed by aerobic organisms to break down organic matter in a wastewater body.
What is the standard temperature for the BOD5 test?
What is the standard temperature for the BOD5 test?
20°C.
What does the BOD test measure?
What does the BOD test measure?
The dissolved oxygen used by microorganisms in the biochemical oxidation of organic matter in waste.
What are BOD test results used for?
What are BOD test results used for?
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What does BOD measure?
What does BOD measure?
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What does seeding provide in BOD testing?
What does seeding provide in BOD testing?
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What temperature is used for determining BOD?
What temperature is used for determining BOD?
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What is used for seeding in BOD testing?
What is used for seeding in BOD testing?
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How long is the incubation period for BOD testing?
How long is the incubation period for BOD testing?
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What does BOD stand for?
What does BOD stand for?
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What is the BOD bottle's volume for placing the sample?
What is the BOD bottle's volume for placing the sample?
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What kind of function models BOD reactions?
What kind of function models BOD reactions?
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What is the main limitation of BOD testing?
What is the main limitation of BOD testing?
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What is BOD calculated using?
What is BOD calculated using?
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Which substance can be used for seeding in BOD testing?
Which substance can be used for seeding in BOD testing?
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What percentage of total BOD is exerted in 5 days?
What percentage of total BOD is exerted in 5 days?
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Study Notes
BOD Test Overview
- BOD test cases include sample only, sample with dilution, and sample with seed
- BOD measures loss of biodegradable organic matter (oxygen demand)
- BOD is calculated using initial and final dissolved oxygen levels
- Seeding provides micro-organisms for oxidation, not required for some wastes
- Settled sewage can be used for seeding
- BOD test involves placing sample in a 300ml BOD bottle, incubating for 5 days at 20°C
- BOD is calculated using the difference in dissolved oxygen concentration values
- BOD can be determined using a formula involving dissolved oxygen values
- A large percentage of total BOD is exerted in 5 days
- BOD reactions are modeled using a first-order function
- The temperature for determining BOD is usually 20°C
- The limitations of BOD include the requirement for a high concentration of active, acclimated seed bacteria
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Description
Test your knowledge of Biochemical Oxygen Demand (BOD) with this quiz. Explore BOD test cases, calculations, and limitations, and assess your understanding of the key concepts related to measuring the oxygen demand of biodegradable organic matter in water samples.
