Assessment of solar raceway pond reactors for removal of contaminants of emerging concern by photo-Fenton at circumneutral pH from very different municipal wastewater effluents
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Soriano Molina, Paula; Plaza Bolaños, Patricia; Lorenzo Flores, Ana Isabel; Agüera López, Ana María; García Sánchez, José Luis; [et al.]Date
2019Abstract
This paper presents for the first time the treatment of contaminants of emerging concern (CECs) in a systematic study in different municipal wastewater treatment plants (MWWTPs) of the Mediterranean area, more than 1000km away. Solar photo-Fenton process at neutral pH with Fe3+-EDDS has been demonstrated to be very efficient under controlled conditions and must be validated in realistic and variable conditions such as real MWWTP effluents of different composition. To this end, CEC removal was studied in effluents from 5 treatment plants in the Mediterranean area of Spain, the inorganic and organic composition varying in the range 161–641 mg/L (sulfate), 133–538 mg/L (chloride) and 10–20 mg/L (dissolved organic carbon). More than 45 CECs were quantified in MWW and results showed that the effect on CEC elimination of the concentration of anions and organic matter was interfered by the nature of the organic matter. However, origin and composition of MWW was not critic for attaining>80% de...
Palabra/s clave
Chloride radicals
EDDS
Micropollutant
Organic matter
Solar photocatalysis
Sulfate radicals