By which method the quantity of organic pollutants in water can be determined
A) By pH measurement
B) By transparency measurement
C) By measuring the change of colour
D) By measuring BOD
Answers
BIOCHEMICAL OXYGEN DEMAND
The method by which quantity of organic pollutants in water can be determined (D) by measuring biochemical oxygen demand (BOD).
GETTING TO KNOW MORE ABOUT BIOCHEMICAL OXYGEN DEMAND:
* The amount of dissolved oxygen (DO) required (i.e. requested) with the aid of using cardio organic organisms to interrupt down natural fabric found in a given water pattern at a selected temperature all through a sure term is called biochemical oxygen demand (BOD).
* The BOD price is commonly given in milligrammes of oxygen used consistent with litre of pattern over a 5-day incubation length at 20 °C, and it's miles regularly used as a proxy for the diploma of natural pollutants in water.
* The lower of BOD is used to evaluate the efficacy of wastewater remedy systems. The organic oxygen demand (BOD) of wastewater effluents is used to estimate the short-time period have an impact on on receiving water oxygen levels.