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Article Dans Une Revue Science of the Total Environment Année : 2012

Effect of coupled UV-A and UV-C LEDs on both microbiological and chemical pollution of urban wastewaters

Résumé

Wastewater reuse for irrigation is an interesting alternative for many Mediterranean countries suffering from water shortages. The development of new technologies for water recycling is a priority for these countries. In this study we test the efficiency of UV-LEDs (Ultraviolet-Light-Emitting Diodes) emitting UV-A or UV-C radiations, used alone or coupled, on bacterial and chemical indicators. We monitored the survival of fecal bioindicators found in urban wastewaters and the oxidation of creatinine and phenol which represent either conventional organic matter or the aromatic part of pollution respectively. It appears that coupling UV-A/UV-C i) achieves microbial reduction in wastewater more efficiently than when a UV-LED is used alone, and ii) oxidizes up to 37% of creatinine and phenol, a result comparable to that commonly obtained with photoreactants such as TiO 2 .
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Dates et versions

hal-02069416 , version 1 (15-03-2019)

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A.-C. Chevremont, Anne Marie Farnet da Silva, B. Coulomb, J.-L. Boudenne. Effect of coupled UV-A and UV-C LEDs on both microbiological and chemical pollution of urban wastewaters. Science of the Total Environment, 2012, 426, pp.304-310. ⟨10.1016/j.scitotenv.2012.03.043⟩. ⟨hal-02069416⟩
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