Figure 4

The concentrations and removal efficiencies of humic acid (a), protein (b) and polysaccharides (c) in the SOP and COP, and the distribution of TOC in the untreated HIM and HOM fractions and the HIM and HOM fractions treated with the SOP and COP (d) (experimental conditions: pH0, 3.11; catalyst dosage, 4.0 g/L; gas flow, 400 mL/min; inlet ozone concentration, 20.25 mg/L; reaction volume, 1.0 L; reaction time, 90 min).