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Magray, Owaes (Dr)

Postdoctoral Researcher

  • +27 (0)62 988 7805
  • MagrayO@ukzn.ac.za
  • PhD (Civil/Environmental Engineering), M-Tech (Civil/Environmental Engineering), B-Tech (Civil Engineering)
  • Research Interests:
    Sustainable wastewater treatment and decentralized sanitation systems, ANAMMOX, DEWATS design and optimization, faecal sludge treatment, microbial process engineering
  • Coming soon

I am Dr. Owaes Magray, an environmental engineer and postdoctoral researcher working on innovative, low-energy wastewater and sanitation solutions. My work focuses on advanced nitrogen removal, decentralized wastewater treatment (DEWATS), and faecal sludge management, combining research, engineering design, and real-world implementation. I aim to develop climate-resilient, sustainable treatment systems that support healthier communities and a cleaner environment.

External links

Google Scholar
LinkedIn

Publications

Journal Papers

  •  Owaes, M., et al., 2020. Performance assessment of aerobic granulation for the post treatment of anaerobic effluents. Environmental Technology & Innovation.

  • Hassan, M.O., et al., 2022. Start‐up of partial nitrification by intermittent aeration, pH shocks, and sulfide addition in a sequential batch reactor. Journal of Chemical Technology & Biotechnology.

  • Owaes, M., et al., 2023. Achieving partial nitrification by harnessing basic hydrolysis of sulphide salts amid high dissolved oxygen conditions. Journal of Environmental Chemical Engineering.

  • Owaes, M., et al., 2024. Implementation of partial nitrification in wastewater treatment systems by modifications in operational strategies–a review. Environmental Technology Reviews.

  • Owaes, M., et al., 2024. Exploring the Influence of Sulfide on Nitrogen-Removal Performance in Anammox Processes. Journal of Environmental Engineering.

  • Rafiq, M., Owaes, M., Gani, K.M., Kumari, S., Seyam, M. and Bux, F., 2025. Deciphering the Effect of Sulfide Derivatives on the Prediction of Nitrite Accumulation in Sulfide-Dosed Partial Nitrification Using Machine Learning. Journal of Environmental Engineering, 151(7), p.04025033.

 

Book Chapter

  • Gaur, R.Z., Owaes, M., et al., 2019. Micro-aerobic technologies for UASB effluent polishing: An overview.

 

Conference Talks/Oral Presentations

  • Owaes, M., et al., 2021. Nitrogen removal from anaerobic effluents by Anaerobic ammonia oxidation coupled with sulphide-driven denitratation. International conference on sustainable development, Durban, South Africa.

  • Owaes, M., et al., 2022. Start-up of Anammox SBR and effects of sulfide on Anammox performance. Water Institute of Southern Africa 2022.

  • Owaes, M., et al., 2023. Considering the external and intrinsic application of sulfide dosing for Partial Nitrification. IWA Leading Edge Conference on Water and Wastewater Technologies (LET 2023).

  • Owaes, M., et al., 2023. C-N-S Coupling in an Anaerobic, Sulfide-based Partial Denitrification and Anammox (SPDA) Reactor System. IWA World Water Congress 2024.

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