Energy coverage of ataköy-ambarlı municipal wastewater treatment plants by salinity gradient power

Creative Commons License

Zoungrana A., TÜRK O. K., ÇAKMAKCI M.

Journal of Water Process Engineering, cilt.38, 2020 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.jwpe.2020.101552
  • Dergi Adı: Journal of Water Process Engineering
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Energy, Ions exchange membranes, Reverse electrodialysis, Salinity gradient power, Wastewater
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

The present study investigated the reverse electrodialysis (RED) energy generation potential of treated wastewaters from Ataköy and Ambarlı wastewater treatment plant (WWTP) when discharged at the Marmara Sea. The good quality of the WWTP effluents and their suitable conductivity (around 1 mS.cm−1) resulted in a power density around 0.5 W.m-2 when they are operated together with the Marmara Sea in a lab-scale RED system. This led to the generation of an approximative daily gross energy of 18.6 MW h and 16 MW h with Ataköy and Ambarlı WWTP, respectively. Considering optimal RED conditions able to reach a power density of 2.5 W.m-2, Ataköy WWTP can generate net energy of 39.9 MW h.day which represents 25.1 % of the total energy demand of the plant. Similarly, the Ambarlı WWTP can cover 25 % of the plant energy demand by generating daily net energy of 36.8 MW h. Improving the characteristics of the ions exchange membranes (IEMs) by introducing highly selective and cost-effective membranes is part of the necessary solution to increase the power output of the process.