What is the distinction between chemical oxygen demand (COD) and organic oxygen demand (BOD)?
Both COD and BOD testing methods are designed to indicate the quantity of contamination in a water pattern. COD is the quantity of oxygen required to chemically break down contaminants, while BOD is the amount of oxygen required for biodegradation by microorganisms.There is a robust correlation between COD and BOD, but COD analysis is a quicker and more correct method.
BOD analysis is carried out to find out the influence of dirty water containing micro organism and natural material on plant and animal life when released into a stream or lake. Bacteria want to soak up oxygen to interrupt down natural materials (pollution) within the water. The check measures the potential for the incoming water to deplete the oxygen within the receiving water as a outcome of bacterial exercise.
If there are high ranges of natural waste and micro organism within the water, it’s going to have a unfavorable impression on the encompassing ecosystem. Low levels of organic waste and fewer bacteria present means that BOD shall be lower and dissolved oxygen levels might be greater. the BOD take a look at consists of acquiring an preliminary dissolved oxygen (DO) studying and a second studying after 5 days of incubation at 20 °C.
COD analysis, however, measures the oxygen consumption capacity of a water pattern contaminated with organic waste. Specifically, it measures the equal amount of oxygen required to chemically oxidize organic compounds within the water and thereby eliminate the contamination. COD is an integral a part of all water high quality management applications.
Almost all wastewater therapy crops must measure considered one of these two objects as an indicator of the pollution value within the water. For pressure gauge 10 bar and associated monitoring gear for wastewater therapy, 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 keeping a sealed water pattern for incubation for a interval of 5 days at 20 degree Celsius. The reduction in dissolved oxygen gives the amount of oxygen consumed by the aerobic organisms.In COD check, the water pattern is incubated with a robust
oxidant in combination with boiling sulphuric acid for a particular period of time and temperature.
BOD value is decided by 5 days.COD may be measured
within few days.
BOD worth is decrease than CODCOD worth is at all times higher than BOD
BOD is used to oxidize the pure
organic matter and natural waste in the waterCOD is able to degrading the commercial sewage. COD doesn’t measure the quantity of oxygen consumed by acetates present 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 characteristics of home wastewater
Read extra about water high quality parameters:
Ammonia in wastewater
Nitrate in water quality
Ammonia vs ammonium
Solution of water air pollutionn
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What is the difference between chemical oxygen demand (COD) and biological oxygen demand (BOD)?
Both COD and BOD testing methods are designed to point the quantity of contamination in a water pattern. COD is the quantity of oxygen required to chemically break down contaminants, while BOD is the amount of oxygen required for biodegradation by microorganisms.There is a strong correlation between COD and BOD, but COD analysis is a quicker and more correct methodology.
BOD analysis is performed to discover out the influence of dirty water containing micro organism and natural materials on plant and animal life when released into a stream or lake. Bacteria need to soak up oxygen to interrupt down natural material (pollution) within the water. The test measures the potential for the incoming water to deplete the oxygen in the receiving water because of bacterial exercise.
If there are high levels of natural waste and bacteria within the water, it will have a negative influence on the encompassing ecosystem. Low ranges of natural waste and fewer micro organism present signifies that BOD will be lower and dissolved oxygen ranges might be larger. the BOD test consists of acquiring an initial dissolved oxygen (DO) studying and a second studying after 5 days of incubation at 20 °C.
COD evaluation, then again, measures the oxygen consumption capacity of a water sample contaminated with natural waste. Specifically, it measures the equal amount of oxygen required to chemically oxidize natural compounds within the water and thereby eliminate the contamination. COD is an integral part of all water quality management applications.
Almost all wastewater remedy vegetation must measure certainly one of these two gadgets as an indicator of the pollution worth within the water. For extra water quality indicators and related monitoring tools 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 performed by chemical reagents
BOD is measured by preserving a sealed water sample for incubation for a interval of 5 days at 20 degree Celsius. The discount in dissolved oxygen offers the quantity of oxygen consumed by the cardio organisms.In COD test, the water pattern is incubated with a powerful
oxidant in combination with boiling sulphuric acid for a selected time frame and temperature.
BOD value is determined by 5 days.COD could be measured
within few days.
BOD worth is lower than CODCOD worth is all the time higher than BOD
BOD is used to oxidize the natural
organic matter and natural waste within the waterCOD is capable of degrading the commercial sewage. COD doesn’t 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 domestic wastewater
Read extra about water quality parameters:
Ammonia in wastewater
Nitrate in water high quality
Ammonia vs ammonium
Solution of water pollutionn