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<p>This study focuses on monitoring the purification performance of an urban wastewater treatment system in Ain El Aouda, Rabat region, using the low-load activated sludge process. This pilot study represents the first time this process has been evaluated in this specific context. Physico-chemical analyses were conducted on parameters including temperature, pH, TSS, COD, BOD5, total nitrogen (NTK), and total phosphorus (Pt) over 12&#xa0;months from 2021 to 2022. The results showed excellent treatment rates: 93% for BOD5, 90% for TSS, and 91% for COD. The pH values consistently met national standards and WHO guidelines (6.5–8.5). Nitrogen and phosphorus removal showed significant improvement, with NTK achieving 82% elimination. Overall, the activated sludge process proved effective and satisfactory, making the treated water safe for environmental release and suitable for irrigating green spaces.</p>

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Performance assessment of urban wastewater treatment of the low-load activated sludge system at Ain El Aouda, Morocco

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • Ikram Chhimi,
  • Badr El Fathi,
  • Abdessalam Ouallali,
  • Velibor Spalevic,
  • Abdeslam Taleb

摘要

This study focuses on monitoring the purification performance of an urban wastewater treatment system in Ain El Aouda, Rabat region, using the low-load activated sludge process. This pilot study represents the first time this process has been evaluated in this specific context. Physico-chemical analyses were conducted on parameters including temperature, pH, TSS, COD, BOD5, total nitrogen (NTK), and total phosphorus (Pt) over 12 months from 2021 to 2022. The results showed excellent treatment rates: 93% for BOD5, 90% for TSS, and 91% for COD. The pH values consistently met national standards and WHO guidelines (6.5–8.5). Nitrogen and phosphorus removal showed significant improvement, with NTK achieving 82% elimination. Overall, the activated sludge process proved effective and satisfactory, making the treated water safe for environmental release and suitable for irrigating green spaces.