Abstract
ABSTRACT An integrated process of iron/carbon micro-electrolysis (ICME)–expanded granular sludge bed (EGSB)–microalgae reactor (MR) was developed for treating pharmaceutical wastewater with initial chemical oxygen demand (COD) of 25000–28500 mg/L. The results show that, under the optimum conditions, the removal ratio of COD, total suspended solids (TSS), color, NH3-N, and total phosphorus were 99.2%, 98.4%, 97.5%, 95.3%, and 78.9%, respectively. The ICME removed a considerable proportion of TSS and color, and improved the biodegradability of the wastewater, while the EGSB played an important role in the removal of residual COD, and finally, post-polish treatment was achieved in the MR.
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