Question
Download Solution PDFThe amount of oxygen consumed by the aerobic bacteria, which causes the aerobic biological decomposition of sewage, is known as
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Biochemical Oxygen Demand (BOD)
The term Biochemical Oxygen Demand (BOD) refers to the amount of oxygen consumed by aerobic bacteria during the decomposition of organic matter in sewage and wastewater. It is a key indicator of the organic pollution level in water and is widely used in water quality analysis.
Analyzing the Given Options
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Option 1: "Biochemical Oxygen Demand (BOD)" (Correct Answer)
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BOD measures the oxygen consumption by aerobic bacteria during decomposition of organic matter.
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This is the correct term as it directly relates to the oxygen demand caused by biological activity in sewage treatment.
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Option 2: "Dissolved Oxygen (DO)" (Incorrect Answer)
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DO refers to the amount of oxygen dissolved in water, not the oxygen consumed during decomposition.
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While DO is important for aquatic life, it is not the correct term to describe the oxygen demand by aerobic bacteria.
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Option 3: "Chemical Oxygen Demand (COD)" (Incorrect Answer)
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COD measures the oxygen demand for chemical oxidation of organic and inorganic matter, not biological decomposition.
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It is different from BOD, which specifically tracks oxygen consumption by microorganisms.
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Hence, COD is not the correct term for this context.
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Option 4: "None of the above" (Incorrect Answer)
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Since BOD is the correct term, this option does not apply.
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This option can be ruled out as a valid term exists for the scenario described.
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