Solutions for excessive COD levels
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This post was last edited by yc125 on 2010-7-15 08:54. Recently, the company is under great pressure regarding environmental regulations, as the COD levels are always above the allowed limits. I’m not sure what solutions others have; I tried using potassium permanganate, but the effect wasn’t very significant. Hydrogen peroxide is too expensive and too dangerous
Won’t you introduce the types of wastewater and their basic characteristics either? How can others know what the specific problem is?
Sure, they’re reluctant to use hydrogen peroxide for treatment, as the results aren’t satisfactory. It is recommended to check whether there are any issues in the processing stage.
First, it is necessary to know the nature of the wastewater as well as its volume； Next is what treatment process to use ； Once again, by how much is the COD level too high? ； Finally, we discuss what methods can be used to further reduce COD.
Reply to 4# cdpulin: It is wastewater containing organic solvents, with a COD value of over 200,000. Thank you for your guidance
What is an organic solvent, and under what process is it produced? Without other detailed parameters, it’s impossible for others to help you. Also, how low do you want the COD level to be, and what level of operating cost is acceptable to you? You need to make these points clear.
How can COD be reduced without incurring any costs?
Over 200,000; even adding hydrogen peroxide doesn’t solve the problem
I think the best method is electrolytic treatment; the cost is not very high, and it involves a three-dimensional electrolysis system.
Pay attention to the operations of the main units, along with some chemical treatments.