When microbial electrochemistry meets UV: The applicability to high-strength real pharmaceutical industry wastewater

JOURNAL OF HAZARDOUS MATERIALS

卷:423

Article

Zou, Rusen¹  Tang, Kai¹  Hambly, Adam C.¹  Wunsch, Urban J.²  Andersen, Henrik Rasmus¹  Angelidaki, Irini¹  Zhang, Yifeng¹ 

[1] Tech Univ Denmark, Dept Environm Engn, DK-2800 Lyngby, Denmark

[2] Tech Univ Denmark, Natl Inst Aquat Resources, Sect Oceans & Arctic, Bldg 201, DK-2800 Lyngby, Denmark

关键词: Pharmaceutical industry wastewater;    Microbial electrolysis cell;    Ciprofloxacin;    UV;    Toxicity;   

DOI  :  10.1016/j.jhazmat.2021.127151

来源: Elsevier

【 摘 要 】

Wastewater from pharmaceutical and related industries contains many residual pharmaceutical components rich in color and high COD contents, which cannot be removed through the traditional wastewater treatment processes. Recently, microbial electrolysis ultraviolet cell (MEUC) process has shown its promising potential to remove recalcitrant organics because of its merits of wide pH range, iron-free, and without complications of iron sludge production. However, its application to the real pharmaceutical-rich industrial wastewater is still unknown. In this study, the MEUC process was validated with real ciprofloxacin-rich (6863.79 +/- 2.21 mu g L-1) industrial wastewater (6840 +/- 110 mg L-1 of COD). The MEUC process achieved 100% removal of cipmfloxacin, 100% decolorization, and 99.1% removal of COD within 12, 60 and 30 h, respectively, when it was operated at pH-controlled at 7.8, applied voltage of 0.6 V, UV intensity of 10 mW cm(-2), and cathodic aeration velocity of 0.005 mL min(-1) mL(-1). Moreover, fluorescence analysis showed that protein- and humic-like substances in such wastewater were effectively removed, providing further evidence of its high treatment efficiency. Furthermore, eco-toxicity testing with luminescent bacteria Vitro Feschri confirmed that the treated effluent was utterly nontoxic. The results demonstrated the broad application potential of MEUC technology for treating industrial wastewater.

【 授权许可】

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