What is BOD and its significance?

What is BOD and its significance?

The biological oxygen demand (BOD) is also called biochemical oxygen demand. The BOD refers to the amount of oxygen required for the biotic degradation of organic matter in bodies of water. The BOD is a pollution parameter mainly to asses the quality of effluent or wastewater. The significance of BOD is very clear.

What is the significance of BOD in wastewater treatment?

IMPORTANCE OF BOD FOR WASTEWATER The higher the BOD value, the greater the amount of organic matter or “food” available for oxygen consuming bacteria. If the rate of DO consumption by bacteria exceeds the supply of DO from aquatic plants, algae photosynthesis or diffusing from air, unfavourable conditions occur.

What is the significance of BOD and COD ratio?

Results of the investigation revealed that BOD: COD ratio is a good indicator for pollution measurement in river. It can be used as an indicator to predict the relationship of BOD and COD in the river. It is also found to be reliable and useful indicator to relate organic matter content in the river water.

What is meant by BOD Class 11?

CBSE Class 11 CBSE Class 11 Chemistry. environmentchemistry, cbse. prasanna August 14, 2016, 5:55am #1. Biochemical Oxygen Demand (BOD): The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of water sample is called Biochemical Oxygen Demand ( (BOD).

What is the significance of BOD Class 12?

Biochemical oxygen demand (BOD) represents the amount of oxygen consumed by bacteria and other microorganisms while they decompose organic matter under aerobic (oxygen is present) conditions at a specified temperature.

What are the significance of BOD and COD in water pollution is talked about?

The conditions for determining BOD are so defined that the quantity alone of the organic materials contained in a sample limits the growth of microorganisms – i.e., the greater the number of organic nutrients present, the greater the material-exchange activity of the bacteria and, therefore, the resultant BOD.

What is BOD full form?

Biological Oxygen Demand (BOD) and Water. Biochemical oxygen demand (BOD) represents the amount of oxygen consumed by bacteria and other microorganisms while they decompose organic matter under aerobic (oxygen is present) conditions at a specified temperature.

What is the significance of BOD in pollution control?

Significance of BOD BOD finds its primary importance in sewage treatment plants. It gives the respiration rate of sewage, sludge, soil, garbage. It determines the rate of respiration in living beings. Measuring BOD gives the COD or Chemical Oxygen Demand of inorganic substances.

What does BOD stand for?

What Is Biological Oxygen Demand in Wastewater Treatment? Biochemical oxygen demand or biological oxygen demand (BOD) is a measure of the amount of Dissolved Oxygen (DO) required by aerobic microorganisms to decompose organic matter present in a sample of water at a certain temperature over a studied period.

What does BOD stand for in business?

The BOD, which stands for Business Optimization Dashboard™, illustrates the many aspects of work in the typical organization. Each level and layer can be defined and understood using the Language of Work Formula.

How to calculate BOD?

BOD Using Dilution Method. Biochemical oxygen demand(BOD) is the amount of dissolved oxygen needed by aerobic biological organisms.Dilution method is a standard method and it is recognized by EPA. BOD 5 is calculated by: Unseeded BOD 5 = (D 0 – D 5) P. Where, D 0 is the dissolved oxygen (DO) of the diluted solution after preparation (mg/l)

What does BOD mean in wastewater?

BOD in wastewater is the result of human waste, food waste and other organics which are sent to the sewers. It is normal for water to have some organics. However, the concentration in wastewater is damaging to waterways if discharged untreated, thus the need for wastewater treatment facilities.