I'm currently troubleshooting a series of 3 activated carbon beds. The carbon beds are using Granular Activated Carbon(GAC). This activated carbon bed set up is to treat wastewater Chemical Oxygen Demand (COD) values to bring it down to below 100 mg/L. Despite running the wastewater through 3 activated carbon beds in series, the outlet stream COD value is still high. The outlet stream is put on recycle to go through the activated carbon beds again whenever the outlet COD values are above 100mg/L. I noticed that the wastewater contains a significant amount of xylene and ethylbenzene and I'm wondering if their presence might affect the performance of the bed.
Thank you in advance!
The answer to your question is YES.
Concerning the influence of the presence of ethylbenzene and xylene on the performance of an activated carbon bed: both can affect the performance of the bed and especially they consume the sorption capacity of the activated carbon and decrease the operational period of the bed at least.
Regards
Vit
Hi Vit Mateju ,
Thank you for the clarification! Appreciate the help and have a nice day!
Regards,
Hussein
1.The xylene and ethylbenzene should affect the COD, because the xylene and ethylbenzene could oxidated by potassium dichromate (K2Cr2O7), when we analysis the sample for COD.
2.The xylene and ethylbenzene should be separated before activated carbon beds, is any embarrass of process wastewater treatment ?
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