Department of Environmental Engineering, Erzurum Ataturk University, Erzurum 25240, Turkey.
Department of Emergency Aid and Disaster Management, Bayburt University, Bayburt 69000, Turkey.
Ultrason Sonochem. 2020 Jan;60:104741. doi: 10.1016/j.ultsonch.2019.104741. Epub 2019 Aug 27.
Ammonia is a commonly used compound in the domestic and industrial fields. If ammonia found in wastewater after use is not treated, even at low concentrations it may cause toxic effects in the receiving environment. In this study, a hydrodynamic cavitation reactor (HDC) was designed with the aim of removing ammonia. The effect of parameters like different cavitation numbers, airflow, temperature and initial concentration on NH removal was researched. The potential of hydrodynamic cavitation for removal of volatile gases, like NH, was assessed with the aid of two film theory mathematical equations. Experimental studies were performed at fixed pH = 11. Under the conditions of 0.12 cavitation number, 25 L/min airflow, 30 °C temperature and 2500 mg/L initial concentration, in 24 h 98.4% NH removal efficiency was achieved. With the same experimental conditions without any air, the HDC reactor provided 89.5% NH removal at the end of 24 h. The HDC reactor is very effective for the removal of volatile gases from wastewater and it was concluded that even in the absence of aeration, the desired NH removal efficiency was provided.
氨是一种在家庭和工业领域中常用的化合物。如果使用后废水中的氨得不到处理，即使浓度很低，也可能对受纳环境造成毒害作用。在本研究中，设计了一种水力空化反应器（HDC），旨在去除氨。研究了不同空化数、气流、温度和初始浓度等参数对 NH 去除的影响。借助两个薄膜理论数学方程评估了水力空化去除挥发性气体（如 NH）的潜力。实验在固定 pH=11 的条件下进行。在 0.12 的空化数、25 L/min 的气流、30°C 的温度和 2500 mg/L 的初始浓度下，24 h 内实现了 98.4%的 NH 去除效率。在相同的实验条件下没有任何空气，HDC 反应器在 24 小时结束时提供了 89.5%的 NH 去除率。HDC 反应器非常有效地去除废水中的挥发性气体，并且可以得出结论，即使在没有曝气的情况下，也可以提供所需的 NH 去除效率。
