Table 2 Leaking of iron during catalytic ozonation of BDFW in continuous mode.

From: Pilot-scale study on catalytic ozonation of bio-treated dyeing and finishing wastewater using recycled waste iron shavings as a catalyst

Sampling time (min)

Ozone dosage (g-O3/min)

HRT (min)

COD (mg/L)

Fe2+ (mg/L)

solid Fe (mg/L)

Total Fe (mg/L)

0

—

—

144

—

2.0

2.0

40

10.2

30

89

2.8

76

78.8

  1. Experimental conditions: Recycling rate = 0 m3/h; HRT = 30 min; ozone dosage = 10.2 g-O3/min.
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