W mesure this to have better biological groth in our plant. nobody can tell how this can have a bad effect on the process
2007-03-16 07:15:44 · 4 answers · asked by Rinkink 1 in Science & Mathematics ➔ Chemistry
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).
The basis for the COD test is that nearly all organic compounds can be fully oxidized to carbon dioxide with a strong oxidizing agent under acidic conditions. The amount of oxygen required to oxidize an organic compound to carbon dioxide, ammonia, and water is engaged
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2007-03-16 07:25:52 · answer #1 · answered by The exclamation mark 6 · 0⤊ 0⤋
It's a measure of how much oxygen will be consumed when all of the organic material present in a solution is oxidized by chemical means (usually a chromium solution with some mercury present). Overconsumption of oxygen can have a huge effect in wastewater systems as it removes the dissolved oxygen from solution, leading to loss of animal life dependent on oxygen.
2007-03-16 07:22:52 · answer #2 · answered by TheOnlyBeldin 7 · 2⤊ 0⤋
• Faster process control. • COD and BOD do not necessarily measure the same types of oxygen consumption. • COD is always greater than BOD measurements. • COD is a more stable measurement method.
2016-03-29 01:49:55 · answer #3 · answered by Lori 3 · 0⤊ 0⤋
Cod is a type of fish which is great breaded and baked.
2007-03-16 07:23:17 · answer #4 · answered by Steve 3 · 0⤊ 3⤋