Advanced oxidation technologies combined with direct contact membrane distillation for treatment of secondary municipal wastewater

• Type: Article in International Scientific Journal
• Date: 2020

Authors

R. Vinoth Kumar (Author) Other; Marta O. Barbosa (Author) FEUP; Ana Rita Ribeiro (Author) FEUP; Sergio Morales-Torres (Author) Other; Manuel Fernando R. Pereira (Author) FEUP; Adrián M. Tavares da Silva (Author) FEUP

Journal

The Journal is awaiting validation by the Administrative Services.

Title: PROCESS SAFETY AND ENVIRONMENTAL PROTECTION

Vol. 140

Pages: 111-123

ISSN: 0957-5820

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 4 Citations

Associated Projects

LA LSRE-LCM - Financiamento Plurianual 2020-2023 para a Unidade LA LSRE-LCM Laboratório de Processos de Separação e Reacção - Laboratório de Catálise e Materiais

Other information

Authenticus ID: P-00S-4RF

DOI: 10.1016/j.psep.2020.03.008

Abstract (EN): In this work, the combination of advanced oxidation technologies (AOTs) and direct contact membrane distillation (DCMD) was investigated for the treatment of municipal wastewater collected from the sec-ondary clarifier of a municipal wastewater treatment plant (MWWTP). Average removal efficiencies of the 12 micropollutants present in the wastewater samples were higher than 95 % with ozonation (O-3) and photolytic ozonation (UV/O-3), whereas only near 50 % of removal efficiency was achieved with UV-peroxidation (UV/H2O2). When the ozone-based processes were combined with DCMD, the concen-tration of these micropollutants were below the detection limits in the respective permeate, increasing the quality of the treated water. However, the permeate fluxes in DCMD were remarkably higher when the wastewater was pre-treated with UV/H2O2 instead of O-3, most probably due to the better disinfection achieved by UV/H2O2. It was also confirmed that the dissolved organic carbon (DOC) of the wastewater strongly affects the permeate fluxes achieved by DCMD. In this regard, the combination of the oxida-tion and membrane separation processes is more appropriate for wastewaters with low DOC contents (< 15 mg L-1).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13