BOD meter for biological oxygen demand testing: principles, advantages and applications

In the field of water environment monitoring, biological oxygen demand (BOD) is a key indicator for assessing the degree of organic pollution in water bodies. As a professional testing equipment, the BOD meter provides a scientific basis for water quality assessment by simulating the degradation process of organic matter in nature. This article will deeply analyze the working principle, technical advantages and practical application value of the BOD meter to help users fully understand this important water quality testing instrument.

1. The core working principle of the BOD meter

The BOD meter adopts a mercury-free differential pressure sensing method. Its core principle is to determine the BOD value by measuring the amount of oxygen consumed by microorganisms when decomposing organic matter in water. There are 6 independent test terminals inside the instrument, each of which is equipped with a high-precision pressure sensor, which can monitor the changes in oxygen concentration in the culture bottle in real time.

Compared with traditional methods, the intelligent design of the equipment realizes fully automatic monitoring, and no manual supervision is required during the experiment. The 7-inch LCD touch screen intuitively displays the real-time data of each test terminal, and the Android system supports multiple sets of data on the same screen. Bluetooth wireless transmission technology ensures data synchronization between the test terminal and the host, greatly improving the convenience and reliability of detection. This design not only avoids the risk of mercury pollution, but also significantly improves the detection efficiency.

2. Technical innovation advantages of BOD meter

BOD meter has many breakthrough technologies. The pipeline-free design solves the leakage problem caused by pipeline aging of traditional equipment, making the test results more stable and reliable. The built-in large-capacity lithium battery can support continuous use for up to half a year, and even a short power outage will not affect the test process. The USB charging interface design makes equipment maintenance easier.

The design of the measurement range of 0-4000mg/L enables most water samples to be directly tested without dilution. The incubation time can be flexibly set according to needs, up to 30 days, to meet the testing needs of different water samples. These innovations make BOD meter a powerful tool in the field of water quality monitoring.

3. Wide application scenarios of BOD meter

BOD meter is widely used in the field of water quality monitoring. Sewage treatment plants use it to monitor treatment effects, environmental monitoring stations use it to assess the degree of water pollution, and sewage discharge enterprises use it to ensure that wastewater meets discharge standards. Scientific research institutions and universities also often use BOD meters for water environment research and teaching experiments. Its accurate test data provides an important basis for water environment management.

The multi-terminal design of BOD meter is particularly suitable for batch testing needs. Six independent test terminals can process different samples at the same time, and new samples can be added at any time without affecting the ongoing test. The data recording frequency can be freely set to ensure the most accurate test results. These features enable the BOD meter to meet various needs from daily monitoring to scientific research experiments, and become an essential instrument for water quality analysis laboratories.

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