What is the distinction between chemical oxygen demand (COD) and organic oxygen demand (BOD)?
Both COD and BOD testing strategies are designed to indicate the quantity of contamination in a water pattern. COD is the amount of oxygen required to chemically break down contaminants, whereas BOD is the amount of oxygen required for biodegradation by microorganisms.There is a robust correlation between COD and BOD, however COD analysis is a faster and extra correct method.
BOD evaluation is carried out to determine the impression of dirty water containing micro organism and organic material on plant and animal life when launched into a stream or lake. Bacteria need to soak up oxygen to break down natural materials (pollution) in the water. The check measures the potential for the incoming water to deplete the oxygen in the receiving water as a result of bacterial activity.
If there are excessive levels of organic waste and bacteria in the water, it will have a negative influence on the surrounding ecosystem. Low ranges of natural waste and less micro organism current implies that BOD might be decrease and dissolved oxygen levels might be greater. the BOD check consists of acquiring an initial dissolved oxygen (DO) reading and a second reading after 5 days of incubation at 20 °C.
COD evaluation, however, measures the oxygen consumption capacity of a water sample contaminated with organic waste. Specifically, it measures the equivalent quantity of oxygen required to chemically oxidize natural compounds within the water and thereby eliminate the contamination. COD is an integral a part of all water quality management programs.
Almost all wastewater therapy vegetation have to measure considered one of these two objects as an indicator of the air pollution value within the water. For extra water high quality indicators and related monitoring equipment for wastewater treatment, please see this text water high quality sensors for water treatmet.
COD VS BOD
BODCOD
BOD is a organic oxidation processCOD is a chemical oxidation course of
BOD is performed by aerobic organismsCOD is carried out by chemical reagents
BOD is measured by maintaining a sealed water sample for incubation for a period of 5 days at 20 diploma Celsius. The discount in dissolved oxygen gives the amount of oxygen consumed by the aerobic organisms.In COD check, the water pattern is incubated with a strong
oxidant together with boiling sulphuric acid for a specific time period and temperature.
BOD worth is determined by 5 days.COD can be measured
within few days.
BOD worth is lower than CODCOD value is always greater than BOD
BOD is used to oxidize the natural
natural matter and natural waste in the waterCOD is capable of degrading the economic sewage. COD does not measure the amount of oxygen consumed by acetates current in the water pattern
COD VS BOD
ClassificationBOD (mg/l )COD (mg/l )
Weak<200<400
Medium350700
Strong5001000
Very Strong>750>1500
BOD and COD traits of home wastewater
Read more about water quality parameters:
Ammonia in wastewater
Nitrate in water high quality
Ammonia vs ammonium
Solution of water pollutionn
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What is the distinction between chemical oxygen demand (COD) and biological oxygen demand (BOD)?
Both COD and BOD testing methods are designed to indicate the amount of contamination in a water pattern. COD is the amount of oxygen required to chemically break down contaminants, while BOD is the quantity of oxygen required for biodegradation by microorganisms.There is a robust correlation between COD and BOD, however COD evaluation is a sooner and extra correct technique.
BOD analysis is performed to discover out the impression of dirty water containing bacteria and organic materials on plant and animal life when launched into a stream or lake. Bacteria need to absorb oxygen to break down natural material (pollution) within the water. The test measures the potential for the incoming water to deplete the oxygen in the receiving water due to bacterial activity.
If there are high levels of organic waste and bacteria within the water, it will have a adverse impression on the surrounding ecosystem. ไดอะแฟรม of organic waste and fewer micro organism current signifies that BOD shall be decrease and dissolved oxygen ranges shall be higher. the BOD test consists of obtaining an initial dissolved oxygen (DO) studying and a second reading after 5 days of incubation at 20 °C.
COD evaluation, on the opposite hand, measures the oxygen consumption capability of a water pattern contaminated with natural waste. Specifically, it measures the equivalent quantity of oxygen required to chemically oxidize organic compounds in the water and thereby remove the contamination. COD is an integral part of all water quality management programs.
Almost all wastewater remedy crops have to measure certainly one of these two objects as an indicator of the pollution value in the water. For extra water quality indicators and associated monitoring gear for wastewater treatment, please see this text water high quality sensors for water treatmet.
COD VS BOD
BODCOD
BOD is a organic oxidation processCOD is a chemical oxidation process
BOD is performed by cardio organismsCOD is performed by chemical reagents
BOD is measured by keeping a sealed water sample for incubation for a interval of 5 days at 20 diploma Celsius. The discount in dissolved oxygen offers the quantity of oxygen consumed by the aerobic organisms.In COD check, the water pattern is incubated with a strong
oxidant in combination with boiling sulphuric acid for a selected time frame and temperature.
BOD value is set by 5 days.COD can be measured
within few days.
BOD value is lower than CODCOD value is always larger than BOD
BOD is used to oxidize the pure
natural matter and natural waste in the waterCOD is capable of degrading the industrial sewage. COD doesn’t measure the amount of oxygen consumed by acetates present within the water sample
COD VS BOD
ClassificationBOD (mg/l )COD (mg/l )
Weak<200<400
Medium350700
Strong5001000
Very Strong>750>1500
BOD and COD traits of domestic wastewater
Read extra about water quality parameters:
Ammonia in wastewater
Nitrate in water quality
Ammonia vs ammonium
Solution of water pollutionn