Integrating granular activated carbon in the post-treatment of membrane and settler effluents to improve organic micropollutants removal
| Autor: | Francisco Omil, Marta Carballa, Lidia Paredes, Carolina Alfonsín, Tomás Allegue |
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| Přispěvatelé: | Universidade de Santiago de Compostela. Departamento de Enxeñaría Química |
| Rok vydání: | 2018 |
| Předmět: |
Granular activated carbon
Membrane effluent General Chemical Engineering 0208 environmental biotechnology chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 01 natural sciences Industrial and Manufacturing Engineering Holistic assessment law.invention Adsorption law Settler effluent Environmental Chemistry Effluent Filtration 0105 earth and related environmental sciences General Chemistry Pulp and paper industry 020801 environmental engineering Membrane chemistry Pharmaceuticals Sewage treatment Post treatment Carbon |
| Zdroj: | Minerva: Repositorio Institucional de la Universidad de Santiago de Compostela Universidad de Santiago de Compostela (USC) Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela instname |
| Popis: | Granular activated carbon (GAC) is applied as post-treatment technology in wastewater treatment plants (WWTPs) in order to increase the elimination of organic micropollutants (OMPs). However, the efficiency and life-time of GAC depend on several parameters, such as the quality of the effluent to be treated or the type of GAC. In the present paper, two types of GAC, based on bituminous carbon (BC-GAC) and coconut shell (CS-GAC), were assessed from a technical, economic and environmental point of view to further remove OMPs present in two secondary effluents, coming from integrated biological systems with a membrane or a settler, respectively. Although all GAC filters were efficient in removing selected OMPs, the quality of the secondary effluent had a strong influence on the lifespan of adsorbent material and the technical operability of the filtration systems. While GAC filters treating membrane effluent were highly effective to remove recalcitrant compounds, such as carbamazepine and diazepam (>80%), even after 430 d of operation (>30,800 BV), the efficiency of GAC filters treating settler effluent quickly lowered to 50% after 100 d of operation ( |
| Databáze: | OpenAIRE |
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