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Investigation of Biochemical Oxygen demand (BOD) Concentration in Effluent from a Sewage Treatment Works
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Investigation of Biochemical Oxygen demand (BOD) Concentration in Effluent from a Sewage Treatment Works NAME: Leo Chiedu Introduction Nature has a way of bringing everything to its normal position, plants give off oxygen during photosynthesis, humans and animals use up this oxygen for survival and in turn give off carbon dioxide (CO2), which is used up by plants. This relationship shows how nature has created a balance between plants and animals. In natural water all living organism depend on the oxygen or dissolved oxygen in water for sustainability. Dissolved oxygen (DO) I water helps maintain a healthy river, lake and ocean and thus supporting different kinds of aquatic organism. A symbiotic system exits whereby all aquatic organisms depend on themselves for survival. Most of the dissolved oxygen (DO) in water comes from photosynthesis and atmosphere, about 8 - 10mg/l is needed to maintain 100% saturation in water. However, the level of dissolved oxygen in...
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