Assessment of full-scale biological nutrient removal systems upgraded with physico-chemical processes for the removal of emerging pollutants present in wastewaters from Mexico

Autor: Edson Baltazar Estrada-Arriaga, Ma. de Lourdes Rivera-Huerta, Silvia Lucila Gelover-Santiago, Sara Pérez-Castrejón, Juana Enriqueta Cortés-Muñoz, César Guillermo Calderón-Mólgora, Lina Cardoso-Vigueros, Alejandra Martín-Domínguez, Liliana García-Sánchez, Esperanza Ramírez-Camperos, Leticia Montellano-Palacios, Arturo González-Herrera
Rok vydání: 2016
Předmět:
Zdroj: Science of The Total Environment. 571:1172-1182
ISSN: 0048-9697
DOI: 10.1016/j.scitotenv.2016.07.118
Popis: Two full-scale biological nutrient removal systems upgraded with three physico-chemical processes (coagulation, chemical precipitation, and neutral Fenton) were evaluated in order to determine the removal of emerging pollutants (EPs) present in municipal wastewater from Mexico. Between 41 and 55 EPs were detected in the influents of two wastewater treatment plants (WWTPs), including personal care products (PPCPs), antibiotics, analgesics, antiepileptics, antilipidemics, antihypertensives, antiseptics, stimulants, and hormones. Emerging pollutants were detected at concentrations ranging from 0.69ng/L to 94,600ng/L. High concentrations of emerging pollutants were found during dry season. WWTP 1, integrated by oxidation ditches and UV light lamps, showed removal efficiencies of EPs between 20% and 22%. On the other hand, WWTP 2 consisted of anaerobic/anoxic/aerobic tanks coupled with two disinfection processes; chlorine dioxide and UV light lamps, for which the removal of EPs was significant (up to 80%). The concentrations of emerging pollutants in WWTP 1 effluent was found within a range
Databáze: OpenAIRE
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