Estimation of the Redox Potential of Lake Mariut Drainage System (Qalaa and Umum Drains)

Qalaa and Umum Drains are agricultural drains and they are the main water sources for Lake Mariut Main Basin (LMMB). The water of Qalaa Drains is anoxic all the time because it contains considerable quantity of oxygen-consuming matter due to the discharge of the wastewater of Alexandria East Wastewater Treatment Plant (EWTP). The present work is aiming to measuring the dissolved and particulate forms of the two major elements Mn and Fe, besides making an estimation of the redox potential of Qalaa and Umum Drains using Mn and Fe that can differentiate between the oxic water of Umum Drain and the anoxic water of Qalaa Drain. The oxidation of Qalaa Drain water is one of the solutions to remove the main Qalaa Drain problem which is H 2S.