Skip to content
6CCVD Research

Scaling-up an integrated electrodisinfection-electrocoagulation process for wastewater reclamation

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2019-08-06
JournalChemical Engineering Journal
AuthorsSalvador Cotillas, Javier Llanos, Inmaculada Moraleda, Pablo CaƱizares, Manuel A. Rodrigo
InstitutionsUniversity of Castilla-La Mancha
Citations52

Abstract

Section titled ā€œAbstractā€

This work focuses on the scale-up of an integrated electrodisinfection-electrocoagulation (ED-EC) process, especially suited for the reclamation of actual urban treated wastewater, equipped with Boron Doped Diamond (BDD) anodes and iron bipolar electrodes. The system operates in continuous mode and in the prototype the anode area was increased three times (anodic oxidation) and the bipolar electrode area fifteen times (electrocoagulation) with respect to the system used at bench scale. Results show that it is possible to attain the complete and simultaneous disinfection and turbidity removal by applying current densities within the range 5-10 A māˆ’2. Free and combined chlorine species were electrogenerated from the chloride contained in the effluents (no reagents were added) being these species responsible for the removal of microorganisms. Likewise, iron coagulant species coming from the electro-dissolution of the anodic side of bipolar electrodes promote turbidity removal. In the scaled-up prototype, a more efficient turbidity removal was achieved, because of the increase in the bipolar electrode area. Finally, it was probed that for electric charges below 0.07 kAh māˆ’3 the reclamation of urban treated wastewater could be reached, avoiding the formation of hazardous chlorates and perchlorates even at current densities higher than 7 A māˆ’2.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2005 - Municipal wastewater reclamation: where do we stand? an overview of treatment technology and management practice [Crossref]
  2. 2005 - Wastewater reclamation and reuse in Europe: a model-based potential estimation [Crossref]
  3. 2013 - Potential of BAC combined with UVC/H2O2 for reducing organic matter from highly saline reverse osmosis concentrate produced from municipal wastewater reclamation [Crossref]
  4. 2015 - Municipal wastewater reclamation for non-potable reuse - environmental assessments based on pilot-plant studies and system modelling [Crossref]
  5. 2018 - Constructed wetlands for greywater recycle and reuse: a review [Crossref]
  6. 2016 - Urban wastewater treatment plant provided with tertiary finishing lagoons: management and reclamation for irrigation reuse [Crossref]
  7. 2015 - Urban wastewater disinfection for agricultural reuse: effect of solar driven AOPs in the inactivation of a multidrug resistant E. coli strain [Crossref]
  8. 2006 - Urban wastewater disinfection by filtration technologies [Crossref]
  9. 2018 - Combining sun-based technologies (microalgae and solar disinfection) for urban wastewater regeneration [Crossref]
  10. 2009 - The electrocoagulation, an alternative to the conventional coagulation process of wastewater

Reads Similar to This

Advanced hybrid electro-oxidation & O3 technology for water reuse in the fruit and vegetable process industry Life Cycle and Economic Analyses of the Removal of Pesticides and Pharmaceuticals from Municipal Wastewater by Anodic Oxidation Efficiency of Cs-free materials for negative ion production in H2 and D2 plasmas