Pretreatment of Color Filter Wastewater towards Biodegradable by Fresnel-Lens-Assisted Solar TiO₂ Photocatalysis

Table 1

Physical and chemical properties of color filter wastewater.

Characteristic	Values
pH	9.8~10.2
COD, mg/L	924~960
BOD5, mg/L	22~51
BOD5/COD	0.02~0.05
TOC, mg/L	280~303
SS, mg/L	0.3~1.9
TS, mg/L	1080~1160
Color (ADMI value)	1540~1600
TMAH, mg/L	3.2~3.3
Cl^−, mg/L	1.8~2.0
NO3^−, mg/L	4.8~5.0
SO4^2−, mg/L	1.1~1.2
NH4^+, mg/L	0.7~0.8