2007-02-25 18:57:56 · 3 answers · asked by sshashis 1 in Science & Mathematics ➔ Engineering
COD - Chemical Oxygen Demand
BOD - Biological Oxygen Demand
In environmental chemistry, the chemical oxygen demand (COD) test is commonly used to indirectly measure the amount of organic compounds in water. Most applications of COD determine the amount of organic pollutants found in surface water (e.g. lakes and rivers), making COD a useful measure of water quality. It is expressed in milligrams per liter (mg/L), which indicates the mass of oxygen consumed per liter of solution. Older references may express the units as parts per million (ppm).
BOD - biochemical (biological) oxygen demand is a test used to measure the concentration of biodegradable organic matter present in a sample of water. It can be used to infer the general quality of the water and its degree of pollution by biodegradable organic matter. It is used in water quality management and assessment, Ecology and environmental science. BOD is not an accurate quantitative test and should be considered as providing an indicator of the quality of a water body.
2007-02-25 19:09:38 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Hey Candy what is the Standard of COD and BOD?
2015-05-18 01:29:05 · answer #2 · answered by ? 2 · 0⤊ 0⤋
cod-30mg/l
2016-02-16 20:02:48 · answer #3 · answered by Moosa Kaleem 1 · 0⤊ 0⤋