Abstract
It is noteworthy to highlight that ammonia nitrogen contamination in wastewater has been reported to pose a great threat to the environment. This conventional method of remediating ammonia nitrogen contamination in wastewater applies the packed bed tower technology. Nevertheless, this technology appears to pose several application issues. Over the years, researchers have tested various types of ammonia stripping process to overcome the shortcomings of the conventional ammonia stripping technology. Along this line, the present study highlights the recent development of ammonia stripping process for industrial wastewater treatment. In addition, this study reviews ammonia stripping application for varied types of industrial wastewater and several significant operating parameters. Furthermore, this paper discusses some issues related to the conventional ammonia stripper for industrial treatment application. Finally, this study explicates the future prospects of the ammonia stripping method. This review, hence, contributes by enhancing the ammonia stripping treatment efficiency and its application for industrial wastewater treatment.
Highlights
Human activities appear to be the major contributor to water pollution, for instance, agricultural, industrial, and municipal activities
Laureni et al concluded that ammonia stripping coupled with absorption proved to be a feasible option for valorization of nitrogen found in pig slurry. e by-product of this process was ammonium sulphate, which is a marketable product in the agriculture arena as fertilizers [15]
Ammonia removal via air-stripping technique in the rotating packed bed reactor was conducted by Yuan et al to enhance the high volumetric gas-liquid mass transfer coe cients, as well as to reduce the fouling problem, the equipment size, and the cost incurred, as an attempt to overcome the shortcomings detected in the conventional ammonia stripping technique. e rotating packed bed reactor appeared to be highly e cient in process intensi cation as it maximized the gas-liquid mass transfer e ciency via strong centrifugal acceleration [51]
Summary
Human activities appear to be the major contributor to water pollution, for instance, agricultural, industrial, and municipal activities. E relative concentrations of ammonia gas and ammonium ions are subjected to the pH and the temperature of wastewater [9]. O’Farell et al conducted a study on nitrogen removal by stripping on a secondary e uent of a municipal wastewater treatment plant [10]. The e uent was neutralized after adding sulphuric acid As a result, they found that the ammonia stripping system for groundwater polluted with leachate displayed removal e ciency of 95.4% with initial ammonia concentration at 199.0 mg/L. Saracco and Genon investigated the performance of air-stripping system to treat ammonia nitrogen from industrial e uent (Figure 3) [12]. Ey suggested this route as feasible only if the industrial e uent was characterized by relatively high temperature and ammonia concentration. Saracco and Genon concluded that the ammonia stripping and the recovery system, along with its internal air recycle, had been technically feasible and easy to control [12]
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