biochemical oxygen demand


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Related to biochemical oxygen demand: biochemical oxygen demand test

bi·o·chem·i·cal ox·y·gen de·mand (BOD),

the rate at which dissolved oxygen is consumed by an organism (often, a microorganism) or a culture of cells.

biochemical oxygen demand

n.
The amount of oxygen required by aerobic microorganisms to decompose the organic matter in a sample of water, such as that polluted by sewage. It is used as a measure of the degree of water pollution. Also called biological oxygen demand.

biochemical oxygen demand

The amount of O2 that aerobic bacteria require for oxidative metabolism when in aqueous organic matter—e.g., sewage.

biochemical oxygen demand (BOD)

an empirical standardized laboratory test designed to measure the oxygen requirements (or demands) of a given EFFLUENT. It is an approximate measure of biochemically degradable organic matter in a water sample. In its simplest form BOD is measured by taking a water sample of known volume, incubating it in the dark for a known period (usually five days), and measuring the oxygen levels at the start and end of the period. During the test the oxygen levels will have been reduced by bacteria in proportion to the amount of organic matter present.

biochemical oxygen demand

the amount of oxygen required in a specified period to decompose organic matter at a temperature of 68°F (20°C). Used to assess sewage effluent. Called also BOD.
References in periodicals archive ?
International Organization for Standardization, International Standard ISO 5815: Water Quality--Determination of biochemical oxygen demand after 5 days ([BOD.
0 2 Total Suspended Solids 25 100 3 Total Dissolved solids 2650 2100 4 Chlorides 1490 1000 5 Chemical Oxygen Demand 110 250 6 Biochemical Oxygen Demand 34 30 All the values are in mg/L except pH.
Parameter Pairs of Labs Data Pairs Biochemical Oxygen Demand (BOD) 24 144 Total Suspended Solids (TSS) 27 162 Chloride (CL) 13 78 Dissolved Iron (DFE) 13 78 Fecal Coliforms (FCOL) 11 66
The following bid specifications are to be used as minimum and maximum standards for an Automated Biochemical Oxygen Demand (BOD) Analyzer for use by the City of Alexandria Laboratory, for use by The City of Alexandria Laboratory Testing Department for examination of both Water and Wastewater.
following; biochemical oxygen demand, total suspended solids, total
Envirogen and ThermoEnergy are pursuing more than 100 potential opportunities where glycol management programs are being created at airports to reduce the effects of biochemical oxygen demand (BOD) in Europe's waterways.
Following a five-day incubation at 20[degrees]C, biochemical oxygen demand (BOD) values were determined with a YSI Model 50B dissolved-oxygen meter.
As noted by the EPA, the effluent from MBR's contain low concentrations of bacteria, total solids (TSS), biochemical oxygen demand (BOD), nitrogen and phosphorous.
6 million less than the estimate of the engineer for the project, which will raise the treatment plant's biochemical oxygen demand (BOD) capacity.
Dairy wastes, for instance, can result in excessive nutrient loading of farm fields, while municipal wastewater, especially in developing nations, may contain high levels of biochemical oxygen demand, bacteria, and other harmful pollutants.
Manufactured from corrosion-resistant polyethylene, the BK 2000 is easily installed and maintained, it can manage flows up to 2,000 gallons per day, combining the ability to equalize flow through upstream and downstream treatment components with an effective device for the retention of solids and biochemical oxygen demand.
The In-Situ RDO methods are the only optical- or luminescence-based DO methods to pass the rigorous ATP approval process for measuring Biochemical Oxygen Demand (BOD), Carbonaceous Biochemical Oxygen Demand (CBOD) and Dissolved Oxygen (DO) under the Clean Water Act.

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