In today’s era, when environmental issues are receiving widespread attention, ammonia-nitrogen pollution in water bodies has become a critical issue that urgently needs to be addressed—and ammonia-nitrogen treatment towers play an irreplaceable and pivotal role in this process.

　　An ammonia-nitrogen treatment tower, from an external perspective, is often a large-scale industrial facility with a complex structure. It consists of several components, including the tower body, internal packing, spray system, air inlet, and air outlet. The tower body is typically constructed from corrosion-resistant materials to ensure long-term stable operation when treating wastewater or exhaust gases containing ammonia nitrogen. The internal packing is one of the core components of the ammonia-nitrogen treatment tower; these packings have a large specific surface area, providing ample space for the reaction between ammonia nitrogen and the treatment chemicals.

　　The working principle of the ammonia-nitrogen treatment tower is based on a variety of chemical and physical processes. When treating wastewater, the wastewater is first introduced into the tower and evenly sprayed onto the packing material via a spray system. At the same time, chemicals specifically designed for ammonia-nitrogen removal are also injected into the tower. These chemicals undergo chemical reactions with ammonia nitrogen—for example, in some cases, by adding an acidic chemical, the ammonia nitrogen is converted into ammonium salts, thereby achieving its removal. When treating ammonia nitrogen from exhaust gases, the exhaust gas enters the tower through the inlet port. Under the special environmental conditions within the tower, the ammonia nitrogen comes into contact with adsorbents or reactive agents, where it is either captured or transformed.

　　Ammonia-nitrogen treatment towers have wide-ranging applications across numerous fields. In the industrial sector, industries such as chemical processing, pharmaceuticals, and textile dyeing generate large volumes of wastewater and exhaust gases containing ammonia nitrogen. Taking the chemical industry as an example, many chemical production processes produce high-concentration ammonia-nitrogen wastewater; if discharged directly, this would cause severe pollution to aquatic environments. Ammonia-nitrogen treatment towers can effectively reduce the ammonia-nitrogen content in these wastewaters to levels that meet discharge standards, thereby protecting the surrounding aquatic ecosystems. In the textile dyeing industry, the use and cleaning processes of dyes result in ammonia-nitrogen pollution. Thanks to their highly efficient treatment capabilities, ammonia-nitrogen treatment towers ensure that wastewater discharged by dyeing enterprises does not pose a threat to nearby rivers, lakes, and other water bodies.

　　In urban wastewater treatment, ammonia-nitrogen removal towers play an indispensable role. As urban populations grow and industries develop, the concentration of ammonia nitrogen in urban wastewater continues to rise. Ammonia-nitrogen removal towers at municipal wastewater treatment plants can efficiently treat large volumes of wastewater, removing ammonia nitrogen from it and ensuring that the treated wastewater can be safely discharged into natural water bodies or reused. This is of great significance for alleviating water resource shortages in cities and protecting the urban aquatic environment.

　　However, ammonia-nitrogen treatment towers also face certain challenges in practical applications. First is the issue of treatment costs. The chemicals used in the ammonia-nitrogen treatment process, as well as the operation and maintenance of the equipment, all require significant financial investment, which may represent a considerable burden for some small enterprises. Second is the need to improve treatment efficiency. Different concentrations of ammonia nitrogen, varying water qualities, and diverse compositions of exhaust gases can all affect the efficiency of ammonia-nitrogen treatment towers. Therefore, how to optimize the design and operational parameters of these towers to suit different conditions is an ongoing research topic.

　　To better harness the potential of ammonia-nitrogen treatment towers, technological innovation is key. Researchers are continuously exploring new treatment agents and reaction mechanisms to enhance the efficiency of these towers and reduce treatment costs. At the same time, improving the structural design of ammonia-nitrogen treatment towers—such as optimizing the shape and arrangement of internal packing materials—can also help boost their overall performance.