Difference Between Biological Oxygen Demand And Chemical Oxygen Demand Pdf

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BOD analysis is performed to determine what effect dirty water, containing bacteria and organic materials, will have on animal and plant life when released into a stream or lake. The test measures the potential of the incoming water to deplete the oxygen of the receiving waters due to the bacterial activity. Low levels of organic waste and fewer bacteria present mean the BOD will be lower and the dissolved oxygen levels higher. Specifically, it measures the equivalent amount of oxygen required to chemically oxidize organic compounds in water thus removing the pollution.

Determination of Oxygen Demand

BOD measures the amount of organic components that can be biologically degraded in water. The ratio of BOD to COD is the percent of the organic materials in water that can be degraded by natural micro-organisms in the environment. Chemican oxygen demand COD and biochemical oxygen demand BOD — a slightly more refined measure of water quality constituents than COD — measures the amount of oxygen that would be required to fully break down the organic components that can be biologically degraded in water. Dissolved oxygen DO is a measure of oxygen dissolved in water. As most forms of COD are water soluble, this pollutant spreads easily via stormwater to waterways. StormwateRx offers enhanced and advanced stormwater treatment systems to remove COD.

BOD Analysis

Specifically designed for laboratories analyzing a medium or large number of samples per day, this system is available with the standard mL bottles or 60mL bottles. This small automated system is ideal for a laboratory that analyses a small number of samples per day. With a low purchase price and small footprint, this system is ideal for smaller laboratories who analyse a few samples per month. Biochemical Oxygen Demand BOD , also often referred to as biological oxygen demand, is a test performed to measure the potential of wastewater and other waters to deplete the oxygen level of receiving waters. In other words, the BOD test is performed to determine what effect dirty water, containing bacteria and organic materials, will have on animal and plant life when released into a stream or lake.

Difference between Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD)

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Yesterday afternoon I finished up some stormwater training with an old client of ours who changed some staff recently. I was brought in for some basic environmental training , and one of the topics we covered was their NPDES stormwater permit. No big deal.

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5 Response
  1. Larry B.

    The biochemical oxygen demand BOD of wastewater and surface water is the measurement of the amount of molecular oxygen in water required by micro-organisms in the biochemical oxidation of organic matter i.

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