Resumo

OME BARRERA, Óscar  e  ZAFRA MEJIA, Carlos. KEY FACTORS IN BIOREMEDIATION PROCESSES FOR THE WASTEWATER TREATMENT. A REVIEW. rev.udcaactual.divulg.cient. [online]. 2018, vol.21, n.2, pp.573-585. ISSN 0123-4226.  https://doi.org/10.31910/rudca.v21.n2.2018.1037.

Bioremediation has proven to be an alternative to establishing new wastewater treatment systems and optimizing the existing conventional systems. The objective of this review paper is to identify and analyze the key factors in bioremediation processes for wastewater treatment worldwide. A systematic review method of literature was used, which included a citation frequency index using quartiles (Q). The results showed the existence of six key factors in bioremediation processes for wastewater treatment: pH (Q3) > temperature (Q2) > oxygen (Q2) > nitrogen (Q2) > phosphorus (Q1) > BOD5 (Q1). There were no significant differences between bioaugmentation and biostimulation technologies in relation to the six key factors identified. A trend in the use of some of these technologies was not demonstrated at the global level. However, in Asia, Europe, and North America there was a greater report on the use of bioaugmentation technology; and in South America and Africa, there was a greater report of biostimulation technology. Bioremediation technologies (Q1) were probably in an initial phase of development and application in wastewater treatment systems because chemical (Q2) and physical technologies (Q2) presented a larger worldwide report. Finally, the results of this study are a reference point for environmental institutions responsible for water quality control, and designers and supervisors in water treatment systems.

Palavras-chave : bioremediation; wastewater; bioaugmentation; biostimulation; phytoremediation.

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