UV-LED for Safe Effluent Reuse in Agriculture

Author(s)

Silva, Noely Bochi ^[1] ; Leonel, Lays Paulino ^[1] ; Tonetti, Adriano Luiz ^[1]

Affiliation

^[1] UNICAMP State Univ Campinas, Sch Civil Engn Architecture & Urbanism FEC, Ave Albert Einstein 951, Cidade Univ Zeferino Vaz, BR-13083852 Campinas, SP - Brazil

• Document type: Journal article
• Source: WATER AIR AND SOIL POLLUTION; v. 231, n. 7 JUL 1 2020.
• Web of Science Citations: 0

Abstract

In the face of the water scarcity problem, the use of treated wastewater emerges as a viable alternative to meet the demand of the agricultural sector, the main consumer of available water in the world. Thus, the development of technologies to provide safe wastewater reuse is a priority. We evaluated the reduction rate of the fecal indicatorEscherichia colinaturally present in effluent from an urban wastewater treatment plant (WWTP) submitted to UV-LED (Ultraviolet-Light-Emitting Diodes) radiation, emitting UVA (365 and 405 nm) or UVC (255 and 280 nm), used alone or coupled. The 280-nm wavelength seems to be crucial to the success of the disinfection systems, as all the programs that used this wavelength reached a 4-log reduction ofE. coli. (AU)

• FAPESP's process: 17/12157-2 - Impact of the application of treated and disinfected wastewater to inactivation of Giardia spp. in soil properties
• Grantee: Lays Paulino Leonel
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 17/07490-4 - Nitrogen removal in anaerobic reactors
• Grantee: Adriano Luiz Tonetti
• Support Opportunities: Regular Research Grants