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Domestic sewage composition

If the composition of the waste stream is known, then the theoretical oxygen demand can be calculated from the appropriate stoichiometric equations. As a first level of approximation, we can assume that this theoretical oxygen demand would be equal to the COD. Then, experience with domestic sewage indicates that the average ratio of COD to BOD will be on the order 1.5 to 2. The following example will help to clarify these relationships. [Pg.309]

Hunter, J.V. (1962) The Organic Composition of Various Domestic Sewage Fractions. PhD Thesis, Rutgers University. [Pg.155]

Hunter, J.V. The organic composition of various domestic sewage fractions. Ph.D. Thesis, Rutgers University (1962). [Pg.190]

Fig. 16.27 Laboratory experiments compositional changes in NaCl-rich industrial and domestic sewage after 170 days contact with soils of Lobatse, Botswana (Table 16.7). Sodium was exchanged for calcium and magnesium. (From Mazor et al., 1981.)... Fig. 16.27 Laboratory experiments compositional changes in NaCl-rich industrial and domestic sewage after 170 days contact with soils of Lobatse, Botswana (Table 16.7). Sodium was exchanged for calcium and magnesium. (From Mazor et al., 1981.)...
Gas Composition. An increase in the carbon dioxide content of the gas produced has also been used to indicate the onset of digester failure. However, there is considerable variation in this with respect to time not only because of the lower damping capacity of the gas phase but also because the carbon dioxide content can be influenced by both chemical and biological reactions in the liquid phase. The normal carbon dioxide content for gas produced from domestic sewage sludge is 30-35%. [Pg.135]

In the confirmatory test, activated sludge from a domestic sewage treatment plant, test surfactant (20 mg/1) and synthetic sewage of composition... [Pg.470]

Composition of wastewater varies with the amount of impurities initially present in water and the chemical analysis of any poUutants that are added. While domestic sewage has a fairly uniform composition, industrial wastes have an almost infinite variety of characteristics, as shown in Table 4.30. Wastewaters shonld be analyzed for at least BOD5, COD, color, total solids (snspended and dissolved), pH, and tnrbidity. Other imparities of interest wUl vary with the sonrce and type of wastewater. [Pg.290]

O Variation in the composition of domestic i sewage does occur. Table I... [Pg.42]

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See also in sourсe #XX -- [ Pg.10 , Pg.12 ]



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Domestic

Domestic sewage

Domestication

Domestication/domesticated

Sewage

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