COD is a very important indicator for wastewater. What is the purpose of reducing COD? !
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COD, or Chemical Oxygen Demand, is a very important indicator in wastewater; each wastewater standard sets specific requirements regarding it. So what is the purpose of reducing COD? ! Water eutrophication? ! Is it related to microorganisms? ! Thank you! !
In general terms, COD refers to a term used to describe organic pollutants in water bodies, reflecting the degree of water pollution.
This post was last edited by ylb913 on 2016-12-14 at 13:52. I think it’s related to the water body that receives the water later on; the high oxygen consumption leads to a lack of oxygen in that water body, which affects the survival of other organisms in it.
No way, isn’t it true that the fewer organisms there are in the water, the better? !
Does COD refer only to organic pollutants? !
Chemical oxygen demand (COD) is the amount of oxidizing agent consumed when a water sample is treated with a certain strong oxidant under specific conditions. It is an indicator of the amount of reducing substances in water. Reducing substances in water include various organic compounds, nitrites, sulfides, ferrous salts, and so on. But the main component is organic matter. Therefore, Chemical Oxygen Demand (COD) is often used as an indicator to measure the amount of organic matter in water. The higher the chemical oxygen demand, the more severe the pollution of the water body by organic matter. Reducing COD can lower the oxygen demand of the receiving water body, thereby preventing oxygen deficiency in it
Actually, what I said on the 3rd floor earlier means the same thing as what was said on the 6th floor; it’s just that we’re not specialists in water treatment, so our expression wasn’t very clear.
Ha, thank you so much, advisor. . .
Is the chemical oxygen demand here referring to the oxygen consumed by the water body? ? This has not much to do with oxygen deficiency in the water body! For example, if water contains benzene, it’s not just a problem of low oxygen levels~~
This post was last edited by ylb913 on 2016-12-14 at 16:58. By \"capacity to accept water,\" I mean the capacity of organisms in the natural environment to handle water that is discharged into it. The natural environment does not have the same capacity as a wastewater treatment plant in a factory, where various bacteria can be used; humanity does not possess such great ability to modify nature. Apart from these specialized bacteria that can survive in your plant’s wastewater treatment facility, what other natural organisms can survive there?