Ammonia nitrogen is a common pollutant in industrial and municipal wastewater. A large amount of wastewater containing ammonia nitrogen is discharged into rivers and lakes, which not only causes eutrophication of natural water bodies, causes oxygen deficit of receiving water bodies, breeds harmful aquatic organisms, and leads to fish death, but also brings great difficulties to the treatment of domestic and industrial water. There are many sources of ammonia nitrogen wastewater and large discharge, such as high-concentration ammonia wastewater discharged by industrial sectors such as oil refining, fertilizer, inorganic chemical industry, ferroalloy, glass manufacturing, meat processing and feed production, as well as animal excrement and landfill leachate. Therefore, removing ammonia nitrogen from wastewater is very important in water environmental protection. How to treat ammonia nitrogen wastewater is a major problem. The traditional method for measuring ammonia concentration is spectrophotometry, but its operation is troublesome, the accuracy is not very ideal, and more reagents are required. Therefore, the new measurement method is different from the selective electrode analysis method, and has begun to be commercially used on a large scale, providing a new idea for the online measurement of ammonia nitrogen.
The appearance of ion-selective electrode probe greatly enriches the way to obtain the important water quality data of ammonia nitrogen. It is not only small enough in size, but also reduces the cost by nearly an order of magnitude compared with the traditional wet chemical analyzer. Therefore, it has obtained large-scale commercial use. Ionic electrode method for ammonia nitrogen measurement does not require reagent, no pollution, can be on-line real-time monitoring. Integrate ammonium ion, potassium ion, pH and reference electrode, automatically compensate for potassium ion, pH and temperature in water. Can be directly put into installation, compared with the traditional ammonia nitrogen analyzer, more economic, environmental protection, convenient and fast. The sensor comes with a self-cleaning brush to prevent microbial attachment, making the maintenance cycle longer and reliable.
