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Biochemical oxygen demand information


BOD test bottles at the laboratory of a wastewater treatment plant

Biochemical oxygen demand (also known as BOD or biological oxygen demand) is an analytical parameter representing the amount of dissolved oxygen (DO) consumed by aerobic bacteria growing on the organic material present in a water sample at a specific temperature over a specific time period. The BOD value is most commonly expressed in milligrams of oxygen consumed per liter of sample during 5 days of incubation at 20 °C and is often used as a surrogate of the degree of organic water pollution.[1]

Biochemical Oxygen Demand (BOD) reduction is used as a gauge of the effectiveness of wastewater treatment plants. BOD of wastewater effluents is used to indicate the short-term impact on the oxygen levels of the receiving water.

BOD analysis is similar in function to chemical oxygen demand (COD) analysis, in that both measure the amount of organic compounds in water. However, COD analysis is less specific, since it measures everything that can be chemically oxidized, rather than just levels of biologically oxidized organic matter.

  1. ^ Clair N. Sawyer; Perry L. McCarty; Gene F. Parkin (2003). Chemistry for Environmental Engineering and Science (5th ed.). New York: McGraw-Hill. ISBN 978-0-07-248066-5.

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Biochemical oxygen demand

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effect an effluent will have on the receiving body, much like biochemical oxygen demand (BOD). The basis for the COD test is that nearly all organic compounds...

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demand Carbonaceous biochemical oxygen demand Penn, Michael R.; James J. Pauer; James R. Mihelcic (2009). "Biochemical Oxygen Demand". In Aleksandar Sabljic...

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Oxygen demand is an environmental chemistry term that may refer to: Biochemical oxygen demand (BOD), the amount of oxygen needed by organisms to break...

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characteristics include pH value, dissolved oxygen concentrations, biochemical oxygen demand (BOD) and chemical oxygen demand (COD), nitrogen, phosphorus, chlorine...

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batches. Oxygen is bubbled through the mixture of wastewater and activated sludge to reduce the organic matter (measured as biochemical oxygen demand (BOD)...

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1007/BF01666294. ISSN 1573-5036. S2CID 30164910. "Dissolved Oxygen and Biochemical Oxygen Demand". Water: Monitoring & Assessment. Washington, DC: United...

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indirect methods are commonly used: mainly the Biochemical Oxygen Demand (BOD) and the Chemical Oxygen Demand (COD).: 36  Management of sewage includes collection...

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Septic drain field

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wastewater requiring disposal and catabolic for the long-term biochemical oxygen demand of that wastewater. The land area that is set aside for the septic...

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Wheaton Science Products

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well as plastic resins. The company also manufactures a BOD (Biochemical Oxygen Demand) bottle that is popular in the international market, as well as...

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Wastewater treatment

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to separate non-polar liquids.: 111–138  Oxidation reduces the biochemical oxygen demand of wastewater, and may reduce the toxicity of some impurities...

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Mixed liquor suspended solids

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In simple terms, the more the biomass consumes the lower the biochemical oxygen demand (BOD) will be in the discharge. It is important that MLSS removes...

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Biodegradability prediction

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structure-activity relationship (QSARs) for biodegradation, for instance, biochemical oxygen demand for chemicals released into the environment with the aid of machine...

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BOD bottle

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which needs to compare oxygen levels in light and dark conditions. Disposable BOD Bottle or Carbonaceous Biochemical Oxygen Demand (CBOD) Bottle It is a...

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Oxygen

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water's biochemical oxygen demand, or the amount of O 2 needed to restore it to a normal concentration. Paleoclimatologists measure the ratio of oxygen-18...

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Biofilter

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recycle part of it to reduce operating costs, has a moderately high biochemical oxygen demand (BOD) and may require treatment before disposal. However, this...

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Landfill

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hydrogen gas (H2). High concentrations of VFAs increase both the biochemical oxygen demand (BOD) and VOA concentrations, which initiates H2 production by...

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Anoxic waters

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between sediment) is oxygen free. Anoxia is further influenced by biochemical oxygen demand (BOD), which is the amount of oxygen used by marine organisms...

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Biogas

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to the formation of photochemical smog. Biochemical oxygen demand (BOD) is a measure of the amount of oxygen required by aerobic micro-organisms to decompose...

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Constructed wetland

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suspended solids or soluble organic matter (measured as biochemical oxygen demand and chemical oxygen demand). Similar to natural wetlands, constructed wetlands...

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Secondary treatment

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to remove dissolved and suspended organic matter measured as biochemical oxygen demand (BOD). These processes are performed by microorganisms in a managed...

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Bod

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avalanche current Bilirubin oxidase, an enzyme Biochemical oxygen demand or "biological oxygen demand", a measure of organic pollution in a wastewater...

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Activated sludge

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major nutrients DO (Dissolved oxygen), nitrogen, phosphate, BOD (Biochemical oxygen demand), and COD (Chemical oxygen demand). In the reactor/aerator and...

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List of abbreviations used in sanitation

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UNICEF CBO - Community-based organization CBOD - Carbonaceous biochemical oxygen demand CBS - Container-based sanitation CCT - Conditional cash transfer...

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Winkler titration

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oxygen is called the biochemical demand in oxygen. The Winkler test is often controversial as it is not 100% accurate and the oxygen levels may fluctuate...

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Aerobic treatment system

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anaerobic distribution systems by significantly reducing the biochemical oxygen demand (BOD5) and total suspended solids (TSS) of the effluent. The reduction...

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in regulations issued by the Environmental Protection Agency: biochemical oxygen demand (BOD) fecal coliform bacteria oil and grease pH (exceeding regulatory...

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Industrial wastewater treatment

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chloroform, naphthalene, phenols, toluene and vinyl chloride. Biochemical oxygen demand (BOD), which is a gross measurement of a range of organic pollutants...

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Bioreactor

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mixed in the liquor in "flocs". In these processes, the liquid's biochemical oxygen demand (BOD) is reduced sufficiently to render the contaminated water...

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