Biochemical oxidative demand

BOD Biochemical Oxygen Demand - the rate at which microorganisms use the oxygen in water or wastewater while stabilizing decomposable organic matter under aerobic conditions. In decomposition, organic matter serves as food for the bacteria and energy results from this oxidation. 

Biochemical oxygen demand (BOD) is arguably the oldest total parameter used for the characterization of water quality. It was introduced in the first decade of the twentieth century as a test for the organic pollution of rivers. BOD is the amount of oxygen in mg L 1 required for the oxidation of the organic matter contained in water by biological action under standardized test conditions (usually a temperature of 20°C and an incubation time of 5 days).8 9 The test is often used to evaluate the efficiency of wastewater treatment processes. 

Biochemical oxygen demand (BOD) Amount of oxygen used for biochemical oxidation by a unit volume of water at a given temperature and for a given period of time BOD is used for the measurement of degree of water pollution. 

Wavelength, m, or Empirical coefficient Empirical coefficients Empirical coefficients Advanced oxidation process Base excision repair Biochemical Oxygen Demand 5-d Biochemical Oxygen Demand Computational fluid dynamics Chemical oxygen demand Disinfection byproducts Deoxyribonucleic acid Heterotrophic plate count Low-pressure Low-pressure high-output Low-pressure low-output... 

Chen et al. found the H2O2 could greatly enhance the degradation of rhodamine 6G in aTi02/UV oxidation system (11). Chemical oxygen demand (COD), biochemical oxygen demand (BOD), bacteria, and ammonia nitrogen in the dye and print wastewater were reduced by 93.9%, 87.6%, 99.9%, and 67.5%, respectively, with a contact time of 30 min. 

Average residence time, min or s Quantum yield of the reaction Wavelength of light Advanced oxidation processes Biochemical oxygen demand... 

In the experiments involved the amount of water from the gas scrubber related to the amount of raw input material was about 0.18 m3/t. The pH-value of the water was mildly alkaline, the chloride concentration was about 290 mg Cl /1 and the total amount of phenols about 23 mg/1. Annealing loss of the scrubber water sediment was 2800 mg/1, and the annealing residue amounted to 8000 mg/1. Sulphur was found mainly in an oxidized form. Results of initial experiments using an apparatus for the determination of the biochemical oxygen demand allowed the conclusion that an undisturbed decomposition of the organic components can take place. 

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