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Application of ozone sensor in tap water disinfection

by:Rika Sensors     2021-09-15
Application of ozone sensor in tap water disinfection
Tap water is the water used for life and production that meets certain standards after disinfection and purification treatment, and it is the guarantee necessary for people's basic daily survival. The disinfection of tap water is directly related to the safety of water, and in turn affects the health and safety of every user. There are many ways to disinfect tap water. At present, most water plants in our country use chlorine for disinfection. Although this method has been used for a long time and is constantly improving, it is still inevitable that harmful substances will be left after disinfection. For this reason, people have begun to explore and find safer and more efficient disinfection methods, and ozone disinfection is one of them.

Ozone is a light blue gas with a special odor at room temperature. Its chemical formula is O3, which has strong oxidizing properties. Ozone has poor stability at normal temperature and pressure, and can be decomposed into oxygen by itself. Inhaling a small amount of this gas is beneficial to the human body, while an excessive amount will harm human health. Therefore, when using ozone to disinfect tap water, an ozone sensor is required to detect the exhaust after the disinfection treatment to prevent the exhaust gas with an excessively high ozone concentration from harming the air environment and human health.

Ozone is a very strong oxidant, second only to fluorine (F2) in oxidation. The sterilization and disinfection effect of ozone is mainly related to its strong oxidizing property and easy diffusion through microbial cell membrane. It can oxidize the organic matter of microbial cells or destroy the chain structure of organisms and cause cell death. Therefore, it is powerful against tenacious microorganisms such as viruses and spores. The lethality. Generally speaking, the sterilization effect of ozone is 1.5 times that of chlorine (Cl2), and the sterilization speed is 600-3000 times faster than that of chlorine. In addition, ozone will not produce harmful substances after disinfection, avoiding 'secondary pollution'. Since the production of ozone only requires electricity, all ozone used for disinfection of tap water can be obtained through on-site production.

In the process of using ozone to disinfect tap water, the ozone sensor can monitor whether ozone leaks and the residual ozone concentration after disinfection, to prevent ozone leakage from damaging the human body, and also help disinfect exhaust gas treatment and reduce air pollution.

The ozone sensor adopts the electrochemical detection principle, by measuring the current generated when the target gas enters the sensor and the chemical reaction occurs at the sensing electrode, so as to achieve the purpose of detecting its concentration. The reaction is quick and sensitive, and the ozone concentration can be reliably detected. The shell adopts a wall-mounted waterproof shell, which is easy to install and has a high degree of protection; the equipment adopts a high-sensitivity gas detection probe imported from the United States, and uses a high-performance signal acquisition circuit, which can accurately measure the ppm ozone concentration, with stable signals and high accuracy. The equipment adopts 485 communication, standard ModBus-RTU communication protocol, communication address and baud rate can be set, and the farthest communication distance is 2000 meters. The equipment has 10-30V wide voltage power supply, and the enclosure has a high degree of protection, which can adapt to various harsh conditions on site.

The ozone sensor can be connected to the environmental monitoring software for free, and the ozone sensor installed in the workshop can be remotely monitored and operated by the network manager. The ozone sensor uploads the collected data to the host computer of the manager, and displays it on the software platform in real time, so that the manager can understand the ozone concentration in the workshop in time. When the ozone concentration rises, we can take measures to appropriately lower the temperature and increase the air humidity. In order to achieve the timely reduction of ozone concentration. The manager can set different limits on the ozone sensor according to the actual situation. Once the ozone exceeds the limit, the platform will send an alarm message to the manager as soon as possible to avoid the occurrence of high concentrations that cause harm to humans.



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