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Biological chemical demand

Refs. 22, 23. BOD = Biological oxygen demand. COD = Chemical oxygen demand. TSS liihle 1. (Continued) Total suspended solids. O and G = oil and grease. ... [Pg.289]

The production of reduced products like methane and ammonia by the gut microbial flora has important environmental consequences, as such compounds contribute to the chemical and biological oxygen demand. The detection of dissolved oxygen in the gut of piglets led to tests to show whether methane and other reduced products could be oxidized in the pig gut. The production of C-labelledCOj from C-labelledmethane has been demonstrated however, it is calculated that at most only a very small proportion of methane produced is likely to be oxidized using O 2 as electron acceptor. Methane may also be oxidized anaerobically, but only an extremely small amount of methane is likely to... [Pg.100]

Industrial wastewater Process effluent treatment to meet environmental discharge standards Reduction of total organic halogens (TOX), biological oxygen demand (BOD), and chemical oxygen demand (COD)... [Pg.416]

BOD Biological Oxygen Demand COD Chemical Oxygen Demand... [Pg.564]

The demand for RMs and CRMs continues to grow. As traditional chemical analysis moves into biochemistry and molecular biology the demand for RMs does not abate the only question is what is next Chapter 9 considers these, and other future issues critically. [Pg.7]

Fig. 5 Main contamination sources identified by PCA for sediments, fish, and suface water in the Ebro River basin, and explained variances for each principal component. Variable identification. Organic compounds in sediments 1, summatory of hexachlorocyclohexanes (HCHs) 2, summa-tory of DDTs (DDTs) 3, hexachlorobenzene (HCB) 4, hexachlorobutadiene (HCBu) 5, summatory of trichlorobenzenes (TCBs) 6, naphthalene 7, fluoranthene 8, benzo(a)pyrene 9, benzo(b) fluoranthene 10, benzo(g,h,i)perylene 11, benzo(k)fluoranthene 12, indene(l,2,3-cd)pyrene. Organic compounds in fish 1, hexachlorobenzene (HCB) 2, summatory of hexachlorocyclohexanes (HCHs) 3, o,p-DDD 4, o,p-DDE 5, o,p-DDT 6, p,p-DDD 7, />,/>DDE 8, />,/>DDT 9, summatory of DDTs (DDTs) 10, summatory of trichlorobenzenes (TCBs) 11, hexachlorobutadiene (HCBu) 12, fish length. Physico-chemical parameters in water 1, alkalinity 2, chlorides 3, cyanides 4, total coliforms 5, conductivity at 20°C 6, biological oxygen demand 7, chemical oxygen demand 8, fluorides 9, suspended matter 10, total ammonium 11, nitrates 12, dissolved oxygen 13, phosphates 14, sulfates 15, water temperature 16, air temperature... Fig. 5 Main contamination sources identified by PCA for sediments, fish, and suface water in the Ebro River basin, and explained variances for each principal component. Variable identification. Organic compounds in sediments 1, summatory of hexachlorocyclohexanes (HCHs) 2, summa-tory of DDTs (DDTs) 3, hexachlorobenzene (HCB) 4, hexachlorobutadiene (HCBu) 5, summatory of trichlorobenzenes (TCBs) 6, naphthalene 7, fluoranthene 8, benzo(a)pyrene 9, benzo(b) fluoranthene 10, benzo(g,h,i)perylene 11, benzo(k)fluoranthene 12, indene(l,2,3-cd)pyrene. Organic compounds in fish 1, hexachlorobenzene (HCB) 2, summatory of hexachlorocyclohexanes (HCHs) 3, o,p-DDD 4, o,p-DDE 5, o,p-DDT 6, p,p-DDD 7, />,/>DDE 8, />,/>DDT 9, summatory of DDTs (DDTs) 10, summatory of trichlorobenzenes (TCBs) 11, hexachlorobutadiene (HCBu) 12, fish length. Physico-chemical parameters in water 1, alkalinity 2, chlorides 3, cyanides 4, total coliforms 5, conductivity at 20°C 6, biological oxygen demand 7, chemical oxygen demand 8, fluorides 9, suspended matter 10, total ammonium 11, nitrates 12, dissolved oxygen 13, phosphates 14, sulfates 15, water temperature 16, air temperature...
A measure of the total organic material present in slurries can be obtained by determining chemical oxygen demand (COD) or biological oxygen demand (BOD) (3) and the latter measure is used by Water Authorities in relation to the pollution of water courses where oxygen tension in the water is a prime concern. In studies to evaluate aerobic digestion as a means of odour reduction, the dissolved volatile fatty acids are a useful measure of the potential odour nuisance (2). [Pg.309]

Since the publication of the third edition, additional data have been critically reviewed. New or additional data included in this edition are bioconcentration factors, aquatic mammalian toxicity values, degradation rates, corresponding half-lives in various environmental compartments, ionization potentials, aqueous solubility of miscellaneous compounds, Henry s law constants, biological, chemical, and theoretical oxygen demand values for various organic compounds. Five additional tables have been added Test Method Number Index, Dielectric Values of Earth Materials and Fluids, Lowest Odor Threshold Concentrations of Organic Compoimds in Water, and Lowest Threshold Concentrations of Organic Compounds in Water. [Pg.10]

Kodak ultratek fixer and replenisher. This chemical formulation has a high biological oxygen demand, and it is expected to cause significant oxygen depletion in aquatic systems. It is expected to have a low potential to affect aquatic organics. It is expected... [Pg.113]

COD = chemical oxygen demand BOD = biological oxygen demand. [Pg.903]

The CO P catalytic oxidation system is a complete prefabricated unit used to treat wastewater contaminated with volatile organic compounds (VOCs) and high biological oxygen demand and chemical oxygen demand. The system uses ozone, ultraviolet light, and hydrogen peroxide to create hydroxyl radicals used in oxidation. [Pg.921]

The magnitude of the chemical or biological oxygen demand of solutions of organic matter determines whether or not these solutions may be safely added to bodies of water. Chemical oxygen demand (COD) is... [Pg.716]

One of several oxygen consumption tests (such as biochemical oxygen demand, BOD) to determine biological/chemical contamination level of a water sample. Usually a laboratory chemical test or increasingly measured with equipment, and designed as indicator of inorganically originating contamination such as phosphate. [Pg.432]

Fig. 8-6. Multivariate correlation coefficients between the sampling points on the river Saale for the water components nitrate and ammonium and the collective parameters conductivity, total hardness, dissolved oxygen, biological oxygen demand, and chemical oxygen demand... Fig. 8-6. Multivariate correlation coefficients between the sampling points on the river Saale for the water components nitrate and ammonium and the collective parameters conductivity, total hardness, dissolved oxygen, biological oxygen demand, and chemical oxygen demand...
See other pages where Biological chemical demand is mentioned: [Pg.415]    [Pg.14]    [Pg.12]    [Pg.12]    [Pg.415]    [Pg.14]    [Pg.12]    [Pg.12]    [Pg.87]    [Pg.178]    [Pg.139]    [Pg.12]    [Pg.345]    [Pg.904]    [Pg.109]    [Pg.200]    [Pg.347]    [Pg.94]    [Pg.213]    [Pg.368]    [Pg.556]    [Pg.30]    [Pg.46]    [Pg.91]    [Pg.296]    [Pg.298]    [Pg.410]    [Pg.434]    [Pg.1144]    [Pg.72]    [Pg.26]    [Pg.464]    [Pg.132]    [Pg.525]    [Pg.1190]    [Pg.430]    [Pg.278]    [Pg.558]    [Pg.291]    [Pg.294]   
See also in sourсe #XX -- [ Pg.17 ]



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