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Abstract
An innovative combination using a sequencing batch reactor (SBR) with iron filing filtration was developed for the treatment of dyeing wastewater. Iron filing filtration served as a pretreatment process to improve the biodegradability of wastewater. Thus the potential of a sequencing batch reactor can be better exerted to decompose toxic substances more efficiently. The experimental results demonstrated that 85% COD and over 90% BOD5 and color can be removed when the influent COD ranged from 1000 mg/L to 1500 mg/L, BOD5 from 200 mg/L to 400 mg/L and color from 200 to 800 times. The combination processes were specifically suited for the treatment of dyeing wastewater containing oxidative dyes.
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