There is no possibility to reduce/remove COD & BOD Level by using Ultra Filtration (UF).
The Surface water Contain Less COD & BOD. But, In industrial Effluents,which will be higher Approximate 900 ppm and 350 ppm respectively(this is textile processing fig).
But you Can reduce these level by adopting Ozonator or U-V ray System, but the cost is High,moreover Some [....]
COD is a non-specific test that measures the quantity of both bio-degradable and non-biodegradable organic matter and is reported as "ppm as oxygen". The test measures the ability of a hot chromic acid solution to oxidize organic matter. [....]
BOD is a non-specific test that measures the quantity of "biologically-degradable" organic matter and is reported as "ppm as oxygen". The test measures the quantity of oxygen depletion resulting from the ability of common bacteria to digest organic matter during a 5-day incubation period at 20 Deg C. [....]