TY - GEN
T1 - Recycling Construction Waste Aggregates for Sustainable Wastewater Treatment
T2 - 10th International Conference on Civil, Structural and Transportation Engineering, ICCSTE 2025
AU - Zaghloul, Mohamed Sherif
AU - Alblooshi, Fatima
AU - Alketbi, Sghaira
AU - Alazzani, Aaisha
AU - Alrashdi, Mariam
AU - El-Hassan, Hilal
N1 - Publisher Copyright:
© 2025, Avestia Publishing. All rights reserved.
PY - 2025
Y1 - 2025
N2 - This study investigates the potential of using recycled construction demolition waste (CDW) aggregates in biofilters for sustainable wastewater treatment. The experiment assessed the efficiency of natural and recycled aggregates, with batch experiment dosages of 1, 2, and 3 gCDW/mg, in removing pollutants from synthetic wastewater. The water quality analysis revealed that natural aggregates significantly improved chemical oxygen demand (COD), total nitrogen (TN), and phosphate removal, with COD reductions of 24–31%, phosphate removal up to 58%, and TN reductions between 80–82%. Conversely, recycled aggregates demonstrated limited effectiveness, particularly in terms of COD and phosphate removal, with only moderate TN reductions (14–22%). Furthermore, recycled aggregates posed risks of chemical leaching, releasing high levels of calcium, potassium, and sodium, along with trace amounts of potentially toxic elements. These results highlight the importance of carefully selecting aggregates and conducting additional research on pretreatment methods to minimize leaching and improve wastewater treatment performance.
AB - This study investigates the potential of using recycled construction demolition waste (CDW) aggregates in biofilters for sustainable wastewater treatment. The experiment assessed the efficiency of natural and recycled aggregates, with batch experiment dosages of 1, 2, and 3 gCDW/mg, in removing pollutants from synthetic wastewater. The water quality analysis revealed that natural aggregates significantly improved chemical oxygen demand (COD), total nitrogen (TN), and phosphate removal, with COD reductions of 24–31%, phosphate removal up to 58%, and TN reductions between 80–82%. Conversely, recycled aggregates demonstrated limited effectiveness, particularly in terms of COD and phosphate removal, with only moderate TN reductions (14–22%). Furthermore, recycled aggregates posed risks of chemical leaching, releasing high levels of calcium, potassium, and sodium, along with trace amounts of potentially toxic elements. These results highlight the importance of carefully selecting aggregates and conducting additional research on pretreatment methods to minimize leaching and improve wastewater treatment performance.
KW - Biofiltration
KW - Leaching Potential
KW - Recycled Aggregates
KW - Wastewater Treatment
UR - https://www.scopus.com/pages/publications/105012163707
UR - https://www.scopus.com/pages/publications/105012163707#tab=citedBy
U2 - 10.11159/iccste25.264
DO - 10.11159/iccste25.264
M3 - Conference contribution
AN - SCOPUS:105012163707
SN - 9781990800559
T3 - International Conference on Civil, Structural and Transportation Engineering
BT - Proceedings of the 10th International Conference on Civil Structural and Transportation Engineering, ICCSTE 2025
A2 - Sennah, Khaled
PB - Avestia Publishing
Y2 - 17 July 2025 through 19 July 2025
ER -