Friday 27 July 2018

Biochemical Oxygen Demand and its Industrial Significance


BOD is the amount of dissolved oxygen needed by aerobic biological organism in a body of water to breakdown organic materi...

The Relationship Between Temperature and Oxygen Solubility Temperature (degrees C) Oxygen Solubility (mg/L) 0 14.6 5 12.8 ...


HYPOXIAHYPOXIA: When dissolve oxygen content below 3.0 mg/L. Many Species move elsewhere and immobile species may die ANOX...

Sources of organic matter Fertilizer contains Nitrate contributes to high BOD

Phosphate present in Soap and detergent that enhances the growth of algal blooms. As a result depletion of oxygen occur. H...

ANALYSIS OF BOD OF WATER Use glass bottles having 60 mL or greater capacity. Take samples of water. Turn on the constant t...

DILUTION OF SAMPLE Most relatively unpolluted streams have a BOD5 that ranges from 1 to 8 mg/L Dilution is necessary when ...

BOD RANGE Millilitre of Sample Millilitre of Water 0-7 mg/L 300 0 6-21 mg/L 100 200 12-42 mg/L 50 250 30-105 mg/L 20 280 6...

BOD of the dilution water is less than 0.2 mg/L. Discard dilution water if there is any sign of biological growth. pH of t...

CALCULATION: The general equation for the determination of a BOD5 value is: BOD = D1-D2/P Where D1 = initial DO of the sam...
Nature BOD Reaction * -dC/dt = kC, where C = concentration of oxidizable organic matter at start of the time interval t, a...



INTERPRETATION OF BOD LEVEL BOD LEVEL STATUS 1-2 mg/L CLEAN WATER 3-5 mg/L MODERATELY CLEAN 6-9 mg/L POLLUTED WATER > 10 m...



The standard oxidation (or incubation) test period for BOD is 5 days at 20 degrees Celsius (°C) (BOD5). Twenty days is con...


In the USA, it has been estimated that each year 7.1 million suffer from a mild to moderate infections, from severe waterb...


Biochemical Oxygen Demand and its Industrial Significance



































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