TiO₂-Based Photocatalytic Treatment of Raw and Constructed-Wetland Pretreated Textile Wastewater

Table 3

COD removal of samples during irradiation treatment.

Sample/colour	COD removal [%] during irradiation	PCOx; irradiation [%]	PCOz; irradiation [%]
Blue, RBL19	Untreated	0	32
	Pretreated	8	0
Red, RRD22	Untreated	43	33
	Pretreated	60	17
Black, RBK5	Untreated	45	26
	Pretreated	41	0