Advanced wastewater treatment
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How to achieve compliant discharge when COD is below 60?
There isn’t enough information to provide advice. The major advanced oxidation methods include Fenton reaction, ozone oxidation, and photocatalysis; there are also more advanced techniques such as diamond film electrode oxidation, whose efficiency is many times higher than that of the aforementioned methods.
COD removal agents can be added directly; the issue is to test whether the cost is acceptable.
There are many companies selling COD removers, as well as those for removing ammonia nitrogen