Work

Elimination of DOC in RO concentrate from a wastewater reclamation plant: Cost comparison of different AOPs

Year: 2022

Type: article

Abstract: Advanced oxidation processes (AOPs) have been reported as alternative ways for treating reverse osmosis (RO) concentrate which is the primary concern for water reclamation plants. AOPs are known to oxidize recalcitrant organic compounds by a highly reactive and nonselective oxidant, hydroxyl radical (OH). Researchers showed that AOPs such as the conventional Fenton, UV/H2O2, ozonation, electrochemical oxidation processes could remove organics in RO concentrate. However, comparing different AOPs has been rarely performed for the treatment of RO concentrate. In addition, the cost of these processes has not been fully explored. In this study, five different AOPs (i.e., the conventional Fenton, UV/H2O2, ozonation, anodic oxidation, and electro-Fenton processes) were evaluated for the removal of dissolved organic carbon (DOC) in RO concentrate. The operation costs for DOC removal by these AOPs were also calculated. The results indicated that the conventional Fenton and ozonation processes were the most cost-efficient among the processes tested.

Source: Environmental Engineering Research

DOI: 10.4491/eer.2022.598

Authors: Beom Joon Kim, Joon-Young Choi, Hye-Jin Lee, Changha Lee

Institutions: Seoul National University, Institute of Engineering Research

Language: English

Topic: Advanced oxidation water treatment

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Responsible consumption and production, Clean water and sanitation

Open Access status: diamond

Funder: Korea Environmental Industry and Technology Institute