Treatment of Color Filter Wastewater by Fresnel Lens Enhanced Solar Photo-Fenton Process

Table 3

Effect of Fresnel lens on the degradation rate constant of color filter wastewater.

Solar Photo-Fenton Process	^a𝑘COD, min^−1	^b𝑘TOC, min^−1	^cUVa+b, W/m^2
Without Fresnel lens	0.0076±0.00079	0.0032±0.00050	54.82
With Fresnel lens	0.0342±0.00232	0.0208±0.00170	138.09

*Operation condition: pH_0 :5.0, 1.25 g H₂O₂/g COD, [H₂O₂]₀/[Fe²⁺]₀= 15.
^a𝑘_COD: pseudo-first-order rate constant based on the degradation of COD in solution for 95% confidence coefficient.
^b𝑘_TOC: pseudo-first-order rate constant based on the degradation of TOC in solution for 95% confidence coefficient.
^cUV_a+b: UV light (280–400 nm) intensity.