Electrochemical Oxidation Using BDD Anodes Combined with Biological Aerated Filter for Biotreated Coking Wastewater Treatment

Table 2

Operation parameters of coupling system in different period.

Items
Electrochemical oxidation	Current density (mA cm^−2)	75	75	75
	HRT (min)	45	45	45
BAF	HRT (hours)	13.08	8.72	6.54
	Ratio of air to water	1 : 1	1 : 1	1 : 1
Run days		30	30	30