Evaluation and improvement of light transmittance for an optimal design of UV-C systems

  • Trifi, Delia (Universitat Jaume I)
  • Prades-Mateu, Óscar (Universitat Jaume I)
  • Chiva, Sergio (Universitat Jaume I)
  • Martínez-Cuenca, Raúl (Universitat Jaume I)

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UV disinfection is the preferred technology for treating clear waters given its low environmental impact and moderate economic cost. In the field of wastewater treatment, UV reactors are still not so efficient since the suspended solids absorb and scatter the UV light. This work has the aim to develop a novel methodology for the evaluation and improvement of these disinfection systems considering the behaviour of the optical properties in the UV-C wavelength range and the interaction of the light field with bubbly flows. The presented experiments were conducted at visible wavelengths mimicking the optical properties of UV-C by adding methylene blue at several concentrations. Results show an increased resilience of the UV-C dosage against changes in water absorption.