Biochemical Oxygen Demand (BOD) is a crucial parameter in water quality and wastewater treatment, representing the amount of dissolved oxygen consumed by aerobic bacteria growing on organic waste present in waterbodies.
Introduction: BOD is calculated in sewage treatment or wastewater treatment to find the destruction of organic wastes by aerobic microbes. It is important because the greater the BOD, the lower the dissolved oxygen (DO) available for aerobic animals.
Calculator(s) -
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Examples / Explanation:
BOD is a reliable measure of organic pollution of water bodies and is used as an index of the degree of organic pollution in water. It plays a vital role in maintaining the health of aquatic ecosystems.
BOD is used in sewage treatment plants to monitor the efficiency of the biological treatment process. The lower the BOD of the treated effluent, the more organic matter has been removed by aerobic microbes.
BOD is used to study the self-purification capacity of a water body. The natural processes of dilution, aeration, and biodegradation can reduce the BOD of the water over time.
BOD is usually expressed in milligrams of oxygen consumed per litre of sample during 5 days of incubation at 20 °C. The unit is often written as mg/L.
If you are using the calculator to determine BOD and the results do not match with the information provided, it is recommended to ensure that the samples are collected and analyzed correctly, as errors can significantly affect the result.
Application
In some water bodies, organic matter is a great source of BOD. These organic matters include sewage and other pollutants present in water bodies. The BOD is accordingly a reliable measure of the organic pollution of water bodies. The main reason for treating wastewater prior to its discharge into a water resource is to reduce its BOD level.
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1. https://www.calculatoratoz.com/en/effluent-bod-given-mass-of-wasted-activated-sludge-calculator/Calc-18970https://www.calculatoratoz.com/en/effluent-bod-given-mass-of-wasted-activated-sludge-calculator/Calc-18970
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3. https://www.calculatoratoz.com/en/influent-bod-given-specific-substrate-utilisation-rate-per-day-calculator/Calc-18960https://www.calculatoratoz.com/en/influent-bod-given-specific-substrate-utilisation-rate-per-day-calculator/Calc-18960
BOD is a reliable gauge of the degree of organic pollution in water and a key factor in the design and operation of wastewater treatment plants. Despite the challenges in measuring BOD, it remains a crucial parameter in water quality and wastewater treatment.
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