Please use this identifier to cite or link to this item:
|Title||Characterization of Ammonia Removal From Municipal Wastewater Using Microwave Energy|
Wastewater treatment is a significant issue in environment protection, that includes many topics such as ammonia removal. Microwave (MW) energy irradiation has acquired a great deal of attention in wastewater treatment matters. Recently, it was used to remove ammonia from industrial wastewater. This research investigated the characteristics of ammonia removal from domestic (municipal) wastewater, which hadn't been studied before. In this research, two experiments were carried out using MW energy: batch reactor and continuous reactor. The batch reactor experiment investigated the basic characteristics of using MW energy in the removal of ammonia nitrogen from municipal wastewater. Thus, three main factors were investigated: initial ammonia concentration, initial pH and radiation time. pH and radiation time showed significant influence on the removal of ammonia nitrogen. The largest removal was obtained at pH 11 in 4 min. Initial ammonia concentration had minute effect. Also, a real municipal wastewater effluent was treated by MW radiation. With the initial ammonia concentration of 67.5 mg/l at pH 11, ammonia was reduced to 5.0 mg/l. The continuous reactor experiment showed a simulation model of a MW-based ammonia removal system. The initial ammonia concentration and detention time were the investigated affecting factors. Four initial ammonia concentrations were studied: 60, 80, 100 and 120 mg/l, and four detention times were applied: 5.26, 9, 15 and 22 min. The results showed that, for all initial concentrations, detention time of 22 min reduced ammonia nitrogen concentration to lower than 5 mg/l. The power consumption of the system was relatively high, which will limit its use in the treatment of toxic wastewater streams. Nevertheless, the power consumption can be reduced significantly using efficient heat exchangers, which would lower down the required energy for heating. However, there are many side benefits that can be achieved when using MW energy, such as collection of ammonia gas and heating buildings.
|Publisher||الجامعة الإسلامية - غزة|
|Files in this item|