Which method is used for measurement of BOD?

Which method is used for measurement of BOD?

Measuring Biochemical Oxygen Demand (BOD) is a method used for:

What is measuring BOD primarily used for?

BOD is good measure of the contamination level of a water supply. It is used primarily for waters that receive pollution from sewage and industrial wastes.

What is biochemical oxygen demand BOD test?

The test for biochemical oxygen demand (BOD) is a bioassay procedure that measures the oxygen consumed by bacteria from the decomposition of organic matter (Sawyer and McCarty, 1978). The change in DO concentration is measured over a given period of time in water samples at a specified temperature.

Why do we measure biological oxygen demand?

Biochemical oxygen demand / biological oxygen demand is an important water quality parameter because it provides an index to assess the effect discharged wastewater will have on the receiving environment.

What is biological oxygen demand PDF?

Biological oxygen demand (BOD), also known as biochemical oxygen demand, is a bioassay procedure that measures the dissolved oxygen (DO) consumed by bacteria from the decomposition of organic matter.

How do you do BOD?

Procedure

1. Collect the water sample from a pond.
2. Carefully fill a BOD bottle with sample water without making air bubbles.
3. Add 2ml of manganese sulfate to the BOD bottle carefully by inserting the pipette just below the surface of water.
4. Add 2 mL of alkali-iodide-azide reagent in the same manner.

What is biochemical oxygen demand quizlet?

Biochemical Oxygen Demand (BOD) A measure of the amount of oxygen necessary to decompose organic material in a unit volume of water. As the amount of organic waste in water increases, more oxygen is used, resulting in a higher BOD.

What is a BOD Incubator?

BOD incubators are especially useful for determining levels of organic matter and nitrogen in waste water samples. These incubators are also called low temperature incubators. The BOD incubator provides the required temperature for the growth of microorganisms and allows to perform the BOD testing.

How is BOD and COD measured?

Testing for BOD involves incubating a sealed water sample at 20C for five days, followed by measuring the difference in oxygen content before and after incubation. COD measures how much DO is consumed by the oxidation of organic matter and inorganic compounds such as ammonia or nitrite under controlled conditions.

What are the reagents required for BOD test?

BOD Reagents

What is measuring biochemical oxygen demand?

Measuring Biochemical Oxygen Demand (BOD) is a method used for : Measuring Biochemical Oxygen Demand (BOD) is a method used for : estimating the amount of organic matter in sewage water. working out the efficiency of oil driven automobile engines.

How is BOD measured in microbiology?

Measuring Biochemical Oxygen Demand Biochemical Oxygen Demand of a water sample is measured by a Bioassay procedure which measures the oxygen consumed by the bacteria from the decomposition of the organic matter over a period of five days at an incubation temperature of 20°C. BOD is expressed in milligrams per litre of sample water.

What does BOD stand for?

Working out the efficiency of oil driven automobile engines. Estimating the amount of organic matter in sewage water. Biochemical oxygen demand (BOD) is the amount of oxygen, expressed in mg/L or parts per million (ppm), that bacteria take from water, when they oxidize organic matter.

What is the BOD index used for?

BOD is used as an index for measuring water quality. Determining organic matter present in a water body and its effect on the ecosystem and aesthetics of the water body is an integral part of water quality management.