DJ-Y2020K25

I. Low-pressure electrolytic ozone generator

Water is the source of all things. We use low-pressure electrolysis with a proton-exchange membrane to separate oxygen molecules from pure water (H₂O), producing various forms of oxygen—including negative oxygen ions, pure oxygen, and ozone. Backed by advanced technologies for oxygen extraction, we then precisely and periodically release these multi-state forms of oxygen into the air at different concentrations, tailored to specific application needs. This comprehensive treatment process—from sterilization and disinfection to removing methanol and benzene, eliminating odors, and enriching the air with fresh oxygen—creates a healthy, safe, and comfortable living and working environment for you.

Currently, there are two main technologies for generating ozone: one is the high-voltage corona discharge method (high-voltage discharge type), which uses air as its raw material. In this method, a dielectric material maintains a certain discharge gap between two parallel high-voltage electrodes. When a high voltage is applied across these electrodes, the heat generated excites oxygen molecules in the air, causing them to gain energy and collide with each other, thereby forming ozone. The corona discharge method produces ozone using air as a feedstock; however, since air contains more than 78% nitrogen, under high-voltage conditions, nitrogen reacts with oxygen to form a new substance—nitrogen dioxide. Nitrogen dioxide is internationally recognized as a toxic substance and is considered one of the factors contributing to cancer development. Moreover, the high-voltage corona discharge technology has limitations in producing high-concentration ozone; typically, the weight-based ozone concentration ranges from 1% to 3%. The other method is the low-voltage electrolysis method (low-pressure water-splitting method), which uses water as its raw material and employs solid-state noble-metal polymer electrolytes. By performing low-voltage electrolysis on water (H₂O), oxygen is separated to produce ozone. The resulting ozone has a weight-based concentration as high as 18% to 20%, and the accompanying gas is pure oxygen—with no harmful substances whatsoever. Low-voltage electrolysis ozone generators are suitable for small- and medium-sized equipment; although their output is relatively low, their ozone concentration is exceptionally high. Ozone concentration is conventionally expressed in volume percentage. For the corona discharge method, the ozone concentration from air sources typically ranges from 1% to 3%; from oxygen sources, it ranges from 2% to 6%. For the low-voltage electrolysis method, the ozone concentration can reach 18% to 20%. Domestically, concentrations are often reported in units such as mg/L or mg/m³. Specifically, the ozone concentration from air sources via the corona discharge method is typically 10–40 mg/L, from oxygen sources it’s 20–80 mg/L, and from pure water via electrolysis, it’s 250–280 mg/L. Low-voltage electrolysis ozone generators consume very little energy, operating at only 3–5 volts, making them safe and highly stable. Importantly, the ozone they produce contains neither nitrogen oxides nor volatile organic compounds—substances that are monitored by national environmental agencies. As a result, these generators have gained widespread popularity among both domestic and international customers.

II. Selection of Ozone Generators

To select an ozone generator, it’s essential to understand the evaluation criteria for ozone generators. Generally, the most fundamental indicators for evaluating an ozone generator include: ozone output, ozone concentration, operating costs, reliability, service life, stability performance, and environmental protection metrics.

Currently, most ozone generators in China employ a high-frequency, high-voltage corona discharge method that uses air as the feedstock to produce ozone. A serious issue arising from this type of ozone generator is the excessive production of nitrogen oxides. Since air contains more than 78% nitrogen, when exposed to a high-voltage discharge environment, nitrogen molecules dissociate into atoms, which then preferentially combine with oxygen to form highly toxic nitrogen oxides—NOx. Among these, the primary component of NOx generated by air-source ozone generators using the high-voltage corona discharge method is nitrogen dioxide (NO₂). Specifically: 1. NO₂ is poorly soluble in water and readily penetrates the lower respiratory tract, reaching deep into the lungs. Once it reaches the alveoli, NO₂ slowly dissolves in body fluids, forming nitrous acid, nitric acid, and their respective salts. These substances, in the form of nitrite and nitrate ions, enter the bloodstream via the lungs and are distributed throughout the body, causing damage to organs such as the kidneys, liver, and heart. Moreover, NO₂ itself exerts a strong irritant and corrosive effect on lung tissue, leading to pulmonary edema. 2. Impairment of immune function: Long-term exposure to NO₂ not only reduces the phagocytic capacity of alveolar macrophages but also inhibits the formation of antibodies in the serum, thereby compromising the body’s immune defenses. 3. Carcinogenic effects: Animal experiments have demonstrated that NO₂ possesses both promoting and carcinogenic properties. Furthermore, the ozone generator market in China today is highly diverse and constantly evolving, with products varying widely in quality. Many people mistakenly believe that as long as ozone is produced, everything is fine, overlooking the fact that nitrogen oxides—a silent killer posing significant health risks—are often overlooked. Particularly with low-priced ozone generators, due to their simple configurations and inferior materials, these devices tend to generate far greater amounts of nitrogen oxides (NOx) alongside ozone. In many pharmaceutical cleanrooms, ozone disinfection is performed frequently; some even use ozone during ongoing production processes—especially in facilities where the ventilation or fresh-air supply systems are inadequate. As a result, nitrogen oxide levels in clean zones can accumulate over time, posing severe health hazards to workers. Therefore, selecting a high-quality ozone generator is critically important.

III. Advantages of Low-Pressure Electrolytic Ozone Generation

Performance and Features of Low-Pressure Electrolysis

1. The resulting ozone concentration, by weight, is several times higher than that produced by the high-voltage corona method (reaching up to 20%).

2. The ozone gas produced contains no nitrogen oxides and no carcinogenic substances.

3. It employs a low-voltage electrolysis principle (3–5V), eliminating any risk of electrical hazards. It does not generate electromagnetic waves or noise and will not interfere when operating alongside other precision instruments.

4. The ozone generator uses pure water as its gas source and does not require an oxygen source or any additional auxiliary equipment beyond the high-pressure ozone generator itself during operation, making it easy to operate and safe and reliable.

5. Low electrode wear, continuous operation capability, and ultra-long service life.

6. It is unaffected by the working environment and temperature, with a humidity resistance of up to 85%.

7. The pure water self-circulation cooling system eliminates the risk of overheating caused by continuous operation of the equipment.

8. A 20% high-concentration ozone is used for air disinfection and sterilization. An 80% oxygen concentration is used to improve indoor air quality and increase the oxygen content of the air.

Comparison of Various Performance Indicators Between DJ-Y Type Electrolytic Ozone Generators and Air (Oxygen)-Discharge Ozone Generators

IV. Design Parameters for the New GMP Cleanroom Application of Electrolytic Ozone Generators

*Low-pressure ozone generators can be arbitrarily combined according to the number of modules, or customized to meet customer requirements.