About ozone detection in water

The ozone produced by the ozone generator has a strong oxidizing power and is recognized as a broad-spectrum high-efficiency fungicide. The use of ozone for disinfection has been widely used in food, pharmaceutical, aquaculture, cosmetics and other industries. In the drinking water and pharmaceutical industries, ozone is used to disinfect water. The dosage of ozone in water directly affects the chemical safety of water. At present, relevant standards and specifications have been introduced to strictly control the amount of ozone added in water. To ensure the quality of ozone treatment and scientific use of ozone, an effective operating system is formed in the operation, and testing is an important part.

Therefore, the ozone analyzer in the water is used in a large amount, and the demand for calibration of such instruments is very urgent. According to market research, the current production workshop or department uses more online ozone analyzers, which can directly treat ozone water. The concentration is monitored (model: US DOM1 water ozone analyzer, US ROUSEMOUNT ozone analyzer, etc.); the portable analyzer is used in the quality control department of the testing organization, the disease control supervisor and the production enterprise (Model: American HACH PCII single parameter water quality analyzer and DR/890 portable water quality analyzer, etc.).

The underwater ozone analyzer calibration system we developed is capable of simultaneously calibrating two types of ozone analyzers (online and laboratory portable). Water treatment system concentration range and method of determination According to relevant industry regulations, ozone is used for water disinfection. The concentration of ozone in water is generally around 1.3 mg/L. After disinfection, the concentration of ozone in residual water must be reduced to 0.50 mg/ L can be used below. The food and drug industry is even more demanding, and its value must be 0.01 mg/L or less before the product can be packaged.

As a water ozone analyzer for monitoring the concentration of ozone in water, the detection range is often O-1.3 mg/L. Therefore, the concentration range of the calibration system of the ozone analyzer developed by us is determined to be 0-1.5 mg/L. . Through a large number of experiments, the Iodometric method in CJ/T3028-94 "Measurement of Ozone Generator Concentration, Yield, and Power Consumption" and GB18066-2000 "Ozone Ozone Hygiene Standard for Potassium Iodide Potassium Iodide Colorimetric Method" were carried out in water. The disadvantage of using these two methods for the detection of ozone concentration is that the sample reagent is very unstable, there are many interfering substances, and the accuracy and precision are poor. GB/T15437-1995 "Determination of ambient air ozone - Indigo disulfonate spectrophotometry" also known as IDS method.

The principle of measuring ozone in water by this method is to use the color of the blue IDS absorption liquid to fade, and quantify according to the degree of fading. The IDS method has the advantages of high sensitivity, good repeatability, easy operation, and less interference. In the process of developing the calibration system for the ozone analyzer in the water, the IDS method is adopted for the determination of the ozone concentration in the water.

This method is not highly accurate and very practical. With the introduction of relevant policies by the state, the ozone produced by the ozone generator is also becoming more and more strict in water. Therefore, the detection requirements for ozone content in ozone water treatment are also increasing. As a member of China's ozone equipment manufacturer, Xinyu has made its own contribution to the development of the national ozone environmental protection cause. In the scientific attitude, I will always be the trend of the times for my own product development, and urgency for customers. Continuous research and development of advanced ozone equipment. We not only maintain our technology in advance, but also strive for excellence in quality. We have introduced a number of advanced production equipment, including machining centers, and the most advanced management in foreign countries. We control all aspects of our products and do not put them into any small links. There is a way to determine the success or failure of the details. I have always used this cautionary motto as our motto.