Post-treatment of secondary treated effluent by Electrocoagulation: Nutrients removal and process optimization
The leve of nutrients in the treated effluent should be maintained at a low level to mitigate the rapid algal bloom and the associated risks in the receiving water bodies. Electrocoagulation (EC) was proven to be an effective method to remove a broad range of impurities in different water matrices....
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2023-01-01
|
| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/70/e3sconf_reee2023_01001.pdf |
| _version_ | 1797658667117445120 |
|---|---|
| author | Al Umairi Abdul Rahim Al Rawahi Wafa Al Shamsi Yahya Al Wahibi Buthaina Al Riyami Bushra Al Nadabi Sara |
| author_facet | Al Umairi Abdul Rahim Al Rawahi Wafa Al Shamsi Yahya Al Wahibi Buthaina Al Riyami Bushra Al Nadabi Sara |
| author_sort | Al Umairi Abdul Rahim |
| collection | DOAJ |
| description | The leve of nutrients in the treated effluent should be maintained at a low level to mitigate the rapid algal bloom and the associated risks in the receiving water bodies. Electrocoagulation (EC) was proven to be an effective method to remove a broad range of impurities in different water matrices. This study evaluated the EC technique as a polishing step for the treated effluent targeting phosphate, nitrate, and dissolved organic matter (DOM). A factorial design was implemented to evaluate the effects of two factors (voltage, and treatment time) at three levels (high, centre, and low) on the EC process. Two electrode types (Fe and Al) performances were compared. The results revealed that both electrodes were capable of high removal of phosphate (100%) from the treated effluent within 10 minutes for both tested voltages 3 and 5 volts. However, the nitrate showed a high persistence for both electrode types and the removal never exceed 10%. Interestingly, aluminum electrodes achieved higher removal (54.5%) of DOC compared to 25.7% by iron electrodes. The main drawback of using the iron electrode was its contribution to the original turbidity which makes it less favourable compared to the Al electrode. The results of this study revealed that the aluminum-based EC process could achieve the target level of nutrient removal without compromising the water quality. |
| first_indexed | 2024-03-11T18:02:36Z |
| format | Article |
| id | doaj.art-cbd8103e97ec4abea7261d71e52e771b |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-11T18:02:36Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-cbd8103e97ec4abea7261d71e52e771b2023-10-17T08:50:53ZengEDP SciencesE3S Web of Conferences2267-12422023-01-014330100110.1051/e3sconf/202343301001e3sconf_reee2023_01001Post-treatment of secondary treated effluent by Electrocoagulation: Nutrients removal and process optimizationAl Umairi Abdul Rahim0Al Rawahi Wafa1Al Shamsi Yahya2Al Wahibi Buthaina3Al Riyami Bushra4Al Nadabi Sara5Civil and Architectural Engineering Department, College of Engineering and Technology, University of Technology and Applied SciencesApplied Chemistry Department, College of Applied Sciences and Pharmacy, University of Technology and Applied SciencesCivil and Architectural Engineering Department, College of Engineering and Technology, University of Technology and Applied SciencesResearch and Development Department, Oman Water and Wastewater Services CompanyCivil and Architectural Engineering Department, College of Engineering and Technology, University of Technology and Applied SciencesCivil and Architectural Engineering Department, College of Engineering and Technology, University of Technology and Applied SciencesThe leve of nutrients in the treated effluent should be maintained at a low level to mitigate the rapid algal bloom and the associated risks in the receiving water bodies. Electrocoagulation (EC) was proven to be an effective method to remove a broad range of impurities in different water matrices. This study evaluated the EC technique as a polishing step for the treated effluent targeting phosphate, nitrate, and dissolved organic matter (DOM). A factorial design was implemented to evaluate the effects of two factors (voltage, and treatment time) at three levels (high, centre, and low) on the EC process. Two electrode types (Fe and Al) performances were compared. The results revealed that both electrodes were capable of high removal of phosphate (100%) from the treated effluent within 10 minutes for both tested voltages 3 and 5 volts. However, the nitrate showed a high persistence for both electrode types and the removal never exceed 10%. Interestingly, aluminum electrodes achieved higher removal (54.5%) of DOC compared to 25.7% by iron electrodes. The main drawback of using the iron electrode was its contribution to the original turbidity which makes it less favourable compared to the Al electrode. The results of this study revealed that the aluminum-based EC process could achieve the target level of nutrient removal without compromising the water quality.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/70/e3sconf_reee2023_01001.pdf |
| spellingShingle | Al Umairi Abdul Rahim Al Rawahi Wafa Al Shamsi Yahya Al Wahibi Buthaina Al Riyami Bushra Al Nadabi Sara Post-treatment of secondary treated effluent by Electrocoagulation: Nutrients removal and process optimization E3S Web of Conferences |
| title | Post-treatment of secondary treated effluent by Electrocoagulation: Nutrients removal and process optimization |
| title_full | Post-treatment of secondary treated effluent by Electrocoagulation: Nutrients removal and process optimization |
| title_fullStr | Post-treatment of secondary treated effluent by Electrocoagulation: Nutrients removal and process optimization |
| title_full_unstemmed | Post-treatment of secondary treated effluent by Electrocoagulation: Nutrients removal and process optimization |
| title_short | Post-treatment of secondary treated effluent by Electrocoagulation: Nutrients removal and process optimization |
| title_sort | post treatment of secondary treated effluent by electrocoagulation nutrients removal and process optimization |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/70/e3sconf_reee2023_01001.pdf |
| work_keys_str_mv | AT alumairiabdulrahim posttreatmentofsecondarytreatedeffluentbyelectrocoagulationnutrientsremovalandprocessoptimization AT alrawahiwafa posttreatmentofsecondarytreatedeffluentbyelectrocoagulationnutrientsremovalandprocessoptimization AT alshamsiyahya posttreatmentofsecondarytreatedeffluentbyelectrocoagulationnutrientsremovalandprocessoptimization AT alwahibibuthaina posttreatmentofsecondarytreatedeffluentbyelectrocoagulationnutrientsremovalandprocessoptimization AT alriyamibushra posttreatmentofsecondarytreatedeffluentbyelectrocoagulationnutrientsremovalandprocessoptimization AT alnadabisara posttreatmentofsecondarytreatedeffluentbyelectrocoagulationnutrientsremovalandprocessoptimization |