MUTHANNA JOURNAL OF ENGINEERING AND TECHNOLOGY (MJET) Effect of Nitrate Recycle Ratio on the Performance of Combined Cylindrical AnoxicAerobic Moving Bed Biofilm Reactor for Domestic Wastewater Treatment   Volume 4, Issue 2, Dec 2016, Pages 23-31  DOI: 10.52113/3/mjet/2016-4-2/23-31 Research Article: Wisam S. Al-Rekabi Civil Engineering Department, Engineering College, university of Basrah     Email address: … Continue reading Effect of Nitrate Recycle Ratio on the Performance of Combined Cylindrical AnoxicAerobic Moving Bed Biofilm Reactor for Domestic Wastewater Treatment