Industrial wastewater treatment in internal circulation bioreactor followed by wetlands containing emergent plants and algae

World Journal of Microbiology & Biotechnology
Faiza GulzarTahseen Zeb

Abstract

Wastewater treatment based on ecological principles is a low cost and highly desirable solution for the developing countries like Pakistan. The present study evaluated the effectiveness of biological treatment systems including Internal Circulation (IC) anaerobic bioreactor and constructed wetlands (CWs) containing macrophytes and mixed algal cultures for industrial wastewater treatment. The IC bioreactor reduced COD (52%), turbidity (89%), EC (24%) of the industrial wastewater. However, the effluents of IC bioreactor did not comply with National Environmental Quality Standards (NEQS) of Pakistan. Post-treatment of IC bioreactor effluents was accomplished in CW containing macrophytes (Arundo donax and Eichhornia crassipes) and mixed algal culture. The CWs planted with macrophytes lowered the concentrations of COD (89%) and turbidity (99%). CWs with algal biomass were not effective in further polishing the effluent. Inhibition of algal biomass growth was observed due to physicochemical characteristics of wastewater. The integrated treatment system consisting of IC bioreactor and macrophytes was found more suitable option for industrial wastewater treatment.

References

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Citations

Sep 19, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Umesh GhimireVeera Gnaneswar Gude
Jan 29, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Marwa GuembriHadda Imene Ouzari

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Methods Mentioned

BETA
atomic absorption spectrometry

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