The dynamic monitoring practice of BOD ₅ (five-day biochemical oxygen demand) analyzer in the treatment of black and odorous water bodies is an important link, which is of great significance for real-time understanding of the content of organic pollutants in water bodies, evaluating treatment effects, and optimizing treatment plans. The following is correctBOD5 analyzerDetailed analysis of dynamic monitoring practices in the treatment of black and odorous water bodies:

1、 Working principle of BOD5 analyzer

The principle of BOD5 analyzer is based on the process of microbial oxidation of organic matter. During the measurement process, the water sample is placed in a constant temperature environment (usually 20 ℃), and then a certain amount of microorganisms are added to the water sample. These microorganisms utilize organic matter in water for growth and metabolism, while consuming dissolved oxygen (DO) in the water. As the number of microorganisms increases and organic matter is consumed, the concentration of dissolved oxygen in water gradually decreases. The measuring instrument calculates the BOD ₅ value in the water sample by measuring the rate of decrease of DO.

2、 Application of BOD5 analyzer in the treatment of black and odorous water bodies

1. Real time monitoring of water quality changes: The measuring instrument can monitor the biochemical oxygen demand in the water in real time, thereby reflecting the content of organic pollutants in the water. This is of great significance for timely detection of water quality abnormalities and warning of potential pollution events.

2. Evaluation of governance effectiveness: In the process of treating black and odorous water bodies, the effectiveness of governance measures can be evaluated by regularly using measuring instruments for monitoring. If the BOD ₅ value continues to decrease, it indicates that the governance measures have achieved positive results; On the contrary, it is necessary to adjust the governance plan.

3. Optimize governance plan: Based on the monitoring results of the measuring instrument, more accurate governance plans can be developed for different regions and time periods of water quality conditions. For example, for areas with high BOD ₅ values, treatment efforts can be increased or more efficient treatment technologies can be adopted.

3、 Practical cases of dynamic monitoring

In a black and odorous water treatment project in a certain city, the project team adoptedBOD5 analyzerPerform dynamic monitoring. By setting up monitoring points at different locations in the water body, regularly collecting water samples and conducting BOD ₅ measurements. The monitoring results show that with the advancement of governance measures, the BOD ₅ value in the water body gradually decreases, indicating that the governance measures have achieved positive results. At the same time, the project team also optimized and adjusted the governance plan based on monitoring results, further improving governance efficiency.

4、 Precautions

1. Instrument calibration and maintenance: To ensure the accuracy and stability of the measuring instrument, it is necessary to regularly calibrate and maintain the instrument. This includes checking the sensitivity of sensors, cleaning the measurement chamber, etc.

2. Water sample collection and processing: When collecting water samples, attention should be paid to avoiding contamination and ensuring the representativeness of the water samples. Meanwhile, in the process of water sample treatment, it is necessary to strictly follow the operating procedures to ensure the accuracy of measurement results.

3. Data analysis and interpretation: After obtaining the BOD ₅ measurement results, it is necessary to conduct comprehensive analysis in conjunction with other water quality parameters (such as dissolved oxygen, ammonia nitrogen, etc.) to gain a more comprehensive understanding of the water quality status and trends.

　　BOD5 analyzerThe dynamic monitoring practice in the treatment of black and odorous water bodies is of great significance. By monitoring changes in water quality in real-time, evaluating treatment effects, and optimizing treatment plans, measures can be taken to promote the in-depth development of black and odorous water treatment work and achieve positive results.