Ammonia Nitrogen Sensor Calibration Method

Ammonia nitrogen in water poses significant risks to both human health and aquatic ecosystems. Under certain conditions, ammonia nitrogen can be converted into nitrite. If consumed over long periods, nitrite in water can combine with proteins to form nitrosamines, which are potent carcinogens and extremely harmful to human health. Additionally, ammonia nitrogen, particularly in its free form, is highly toxic to aquatic organisms, being dozens of times more toxic than ammonium salts. Fish are particularly sensitive to ammonia nitrogen levels in water, and high concentrations can lead to fish death.

The concentration of ammonia nitrogen in sewage is often high, and if discharged directly, it can cause a series of environmental problems. Therefore, rapid and accurate determination of ammonia nitrogen in sewage is crucial to prevent pollution.

Causes of High Ammonia Nitrogen Wastewater

The primary sources of high ammonia nitrogen wastewater are the chemical industry, pharmaceutical industry, and smelting processes.

• Chemical Industry: The chemical industry produces a variety of compounds, many of which contain nitrogen. During production, nitrogen compounds can be released into wastewater, contributing to high ammonia nitrogen levels.
• Pharmaceutical Industry: Pharmaceutical manufacturing often involves the use of nitrogen-containing compounds. These compounds can end up in wastewater, leading to elevated ammonia nitrogen concentrations.
• Smelting: Smelting processes involve the extraction of metals from ores, which can release nitrogen compounds into the wastewater stream.

Conventional Methods vs. Ion Selective Electrode Method

Conventional methods for analyzing turbid wastewater require pretreatment, which can be time-consuming and costly. In contrast, the ion selective electrode (ISE) method is not affected by color, turbidity, or suspended solids and can be directly measured without pretreatment.

Daruifuno NH351 Ion Electrode Method Ammonia Nitrogen Probe

The Daruifuno brand NH351 ion electrode method ammonia nitrogen probe offers a solution to the challenges of measuring ammonia nitrogen in wastewater. This probe uses an integrated measuring cylinder structure, making it compact and easy to operate. It provides fast detection speeds, making it suitable for rapid, frequent, and continuous measurement in the field.

The NH351 ammonia sensor comes with a cleaning system that eliminates contamination and bubble build-up, reducing the impact on measurements and extending maintenance intervals. The ion electrode method used by the ammonia sensor requires no reagent consumption, ensuring good stability and low maintenance.

Features of the NH351 Ammonia Sensor

• ISE Measurement Method: The ammonia sensor uses the ion selective electrode (ISE) measurement method.
• Integrated Electrodes: It integrates ammonium ion, pH, reference electrode, temperature electrode, and potassium ion (optional).
• Online Real-Time Monitoring: The sensor enables online real-time monitoring without adding any reagents during the detection process, ensuring no secondary pollution.
• Automatic Compensation: It automatically compensates for potassium ions (optional), pH, and temperature in the water body.
• Digital Interface: The sensor features an RS485 digital interface with Modbus protocol, supporting access to standard industrial control systems and ammonia controllers.
• Self-Cleaning Brush: The ammonia sensor has a self-cleaning brush to prevent biological attachment and reduce the frequency of maintenance.

Specification

In addition to digital ammonia sensors, Daruifuno also provides digital pH sensors, turbidity sensors, dissolved oxygen sensors, and other water quality analysis instruments. If you need any solutions regarding water analyzers, please contact us!