COD VS BOD

What is the distinction between chemical oxygen demand (COD) and biological oxygen demand (BOD)?

Both COD and BOD testing strategies are designed to point the amount of contamination in a water sample. COD is the quantity of oxygen required to chemically break down contaminants, while BOD is the quantity of oxygen required for biodegradation by microorganisms.There is a powerful correlation between COD and BOD, however COD evaluation is a faster and more accurate methodology.
BOD evaluation is carried out to determine the impact of dirty water containing micro organism and natural materials on plant and animal life when launched right into a stream or lake. Bacteria want to absorb oxygen to break down natural materials (pollution) within the water. The test measures the potential for the incoming water to deplete the oxygen within the receiving water due to bacterial activity.
If there are high levels of organic waste and bacteria within the water, it’ll have a unfavorable influence on the encompassing ecosystem. Low ranges of natural waste and less bacteria current means that BOD shall be lower and dissolved oxygen levels might be greater. the BOD test consists of acquiring an initial dissolved oxygen (DO) studying and a second reading after 5 days of incubation at 20 °C.
COD evaluation, however, measures the oxygen consumption capability of a water pattern contaminated with organic waste. Specifically, it measures the equal quantity of oxygen required to chemically oxidize organic compounds within the water and thereby get rid of the contamination. COD is an integral part of all water high quality management applications.
Almost all wastewater treatment crops have to measure one of these two items as an indicator of the air pollution value in the water. For more water quality indicators and related monitoring tools for wastewater therapy, please see this article 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 carried out by aerobic organismsCOD is performed 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 offers the amount of oxygen consumed by the aerobic organisms.In COD take a look at, the water sample is incubated with a powerful

oxidant in combination with boiling sulphuric acid for a particular period of time and temperature.
BOD worth is set by 5 days.COD may be measured

inside few days.
BOD value is lower than CODCOD worth is all the time higher than BOD

BOD is used to oxidize the pure

natural matter and organic waste in the waterCOD is capable of degrading the economic sewage. COD doesn’t measure the amount of oxygen consumed by acetates present within 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 quality parameters:
Ammonia in wastewater

Nitrate in water quality

Ammonia vs ammonium

Solution of water 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 amount of oxygen required to chemically break down contaminants, whereas BOD is the quantity of oxygen required for biodegradation by microorganisms.There is a powerful correlation between COD and BOD, but COD evaluation is a quicker and extra correct technique.
BOD evaluation is carried out to determine the impression of dirty water containing micro organism and natural material on plant and animal life when launched right into a stream or lake. Bacteria need to absorb oxygen to interrupt down natural materials (pollution) in the water. The take a look at measures the potential for the incoming water to deplete the oxygen in the receiving water due to bacterial activity.
If there are high ranges of organic waste and bacteria within the water, it’s going to have a negative impression on the encircling ecosystem. Low levels of organic waste and less bacteria current means that BOD might be decrease and dissolved oxygen ranges might be higher. the BOD test consists of acquiring an initial dissolved oxygen (DO) reading and a second reading after 5 days of incubation at 20 °C.
COD analysis, on the opposite hand, measures the oxygen consumption capability of a water pattern contaminated with natural waste. Specifically, it measures the equivalent amount of oxygen required to chemically oxidize natural compounds within the water and thereby remove the contamination. ราคาเกจวัดแรงดันน้ำ is an integral a part of all water quality administration packages.
Almost all wastewater treatment plants have to measure one of these two items as an indicator of the pollution worth in the water. For extra water quality indicators and related monitoring gear for wastewater therapy, please see this text water quality sensors for water treatmet.
COD VS BOD

BODCOD

BOD is a biological oxidation processCOD is a chemical oxidation course of

BOD is carried out 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 provides the quantity of oxygen consumed by the cardio organisms.In COD check, the water pattern is incubated with a strong

oxidant together with boiling sulphuric acid for a specific period of time and temperature.
BOD worth is set by 5 days.COD can be measured

within few days.
BOD value is decrease than CODCOD worth is all the time greater than BOD

BOD is used to oxidize the natural

natural matter and organic waste in the waterCOD is able to degrading the economic sewage. COD does not measure the quantity of oxygen consumed by acetates current in the water sample

COD VS BOD

ClassificationBOD (mg/l )COD (mg/l )

Weak<200<400

Medium350700

Strong5001000

Very Strong>750>1500

BOD and COD characteristics of domestic wastewater

Read extra about water quality parameters:
Ammonia in wastewater

Nitrate in water high quality

Ammonia vs ammonium

Solution of water pollutionn

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