Feasibility of Micropollutants Treatment by Coupling Nanofiltration and Electrochemical Oxidation: Case of Hospital Wastewater
-
Yandi Lan
and
Karine Groenen Serrano
Abstract
In spite of good performances of the membrane bioreactor (MBR) process, permeate from it can still contain refractory pollutants that have to be removed before water reuse or discharge. The present study is an attempt to combine the advantages of two well-known technologies, which are nanofiltration (NF) and electrochemical oxidation (EO) to treat MBR effluent from hospital wastewater. The concept is based on a preconcentration of micropollutants with a reduction of the wastewater volume by NF and treatment of the NF retentate by oxidation. During filtration process the rejection of ciprofloxacin, as a target molecule, reached beyond 97%. Then the NF retentate was treated by EO using a boron-doped diamond anode (BDD). Galvanostatic electrolyses showed that this anode is efficient to mineralize not only ciprofloxacin but also all the micropollutants and organics contained in MBR effluent. The results demonstrated that rapid mineralization occurred: the removal of total organic carbon and chemical oxygen demand (COD) reached 97% and 100%, respectively, in our conditions in 300 min maximum. The specific energy consumption for the total removal of COD was calculated to be 50 kW h kg˗1 COD.
Acknowledgments
Authors are grateful to the coordinator of the Project PANACEE supported by the French National Research Agency for allowing them access to hospital wastewater. They also wish to thank the company Polymem for providing membrane module.
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Articles in the same Issue
- Frontmatter
- CO2 Sorption-Enhanced Processes by Hydrotalcite-Like Compounds at Different Temperature Levels
- Feasibility of Micropollutants Treatment by Coupling Nanofiltration and Electrochemical Oxidation: Case of Hospital Wastewater
- Sewage Treatment with a Hybrid Constructed Soil Filter
- Study of Two Catalyst Configurations under Microwave Irradiation for the Selective Benzaldehyde Production over Co-ZSM-11 and Fe-ZSM-11
- Sulfation and Carbonation Competition in the Treatment of Flue Gas from a Coal-Based Power Plant by Calcium Hydroxide
- Extraction of Lactic Acid in Mixed Solvent Electrolyte System Containing Water, 1-Butanol and Ammonium Sulfate
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Articles in the same Issue
- Frontmatter
- CO2 Sorption-Enhanced Processes by Hydrotalcite-Like Compounds at Different Temperature Levels
- Feasibility of Micropollutants Treatment by Coupling Nanofiltration and Electrochemical Oxidation: Case of Hospital Wastewater
- Sewage Treatment with a Hybrid Constructed Soil Filter
- Study of Two Catalyst Configurations under Microwave Irradiation for the Selective Benzaldehyde Production over Co-ZSM-11 and Fe-ZSM-11
- Sulfation and Carbonation Competition in the Treatment of Flue Gas from a Coal-Based Power Plant by Calcium Hydroxide
- Extraction of Lactic Acid in Mixed Solvent Electrolyte System Containing Water, 1-Butanol and Ammonium Sulfate
- Production of Oil and Char by Intermediate Pyrolysis of Scrap Tyres: Influence on Yield and Product Characteristics
