Ozone micro nano bubble generator for wastewater treatment

    Micro and nano bubbles are micro and nano sized bubbles with slow rising speed, long residence time, high dissolution efficiency, self oxygenation, negative charge and rich in strong oxidizing free radicals. The adsorption of suspended solids to remove micro nano bubbles not only has high potential generated by surface charge, but also has large specific surface area. Therefore, the combination of micro nano technology and coagulation process in wastewater pretreatment shows good adsorption effect and high removal rate for suspended solids and oil, and also has good removal effect for cod, ammonia nitrogen and total phosphorus. The hydroxyl radicals released from micro and nano bubbles can oxidize and decompose many organic pollutants. The treatment of refractory wastewater and sludge has shown a potential application prospect. In order to make micro and nano bubbles produce more hydroxyl radicals in water, other strong oxidation methods, such as ultraviolet, pure oxygen and ozone, are often used for synergistic effect, so as to better play the role of oxidation and decomposition of organic pollutants in wastewater.

    Using ozone as the carrier gas of micro and nano bubbles, it is easier to produce a large number of hydroxyl radicals, and its oxidation ability (2.8ev) is second only to fluorine (2.87ev). Hydroxyl radicals are the intermediate products of the reaction, which can induce the following chain reaction, and their electronic affinity is 569.3kj, which can pull out h in saturated hydrocarbons and promote the self oxidation of organic compounds, So that the organic matter which is difficult to be treated by the general biological method can be degraded. The combination of ozone and micro nano bubbles can greatly improve the solubility concentration of ozone in water. Because of the slow-release effect of ozone micro nano bubbles in the generated ozone water, the residence time of ozone in water can be prolonged, and the utilization rate of ozone can be greatly improved, up to 95-99%, The utilization rate of ozone is only 30-50%; The potential of surface charge is high and the specific surface area is large. The smaller the bubble volume, the higher the potential at the interface and the better the adsorption of charged particles in the water. In the inclined reactor, due to the high internal pressure, the micro and nano bubbles will shrink and show their own pressurization effect in the rising process. In the process of volume contraction of micro nano bubbles, due to the increase of specific surface area and internal pressure, more ozone gas is dissolved into water through the bubble interface, which improves the utilization rate of ozone.

    In the treatment of refractory organic polluted wastewater, the use of low-cost, high yield and high concentration micro nano ozone in alkaline environment can produce more · Oh to participate in the reaction of pollutants, change its molecular structure and chemical properties, and become easily degradable substances, which is more effective and competitive than electrolysis technology, It can effectively remove chroma and refractory organics and reduce the cost of pollution control. It has a broad application prospect in chemical industry, pharmaceutical industry, printing and dyeing industry.

    The less the content of aromatic hydrocarbons, the higher the ratio of BOD to cod, the better the biodegradability.

    It will be more reasonable in economy to improve the biodegradability of wastewater and reduce the COD of wastewater by biochemical method through ozone micro nano bubble super oxidation.

Advantages of ozone micro nano bubble generator

    Integrated design of machine, electricity, water and gas, built-in ozone device, mixing and dissolving device, electric control device and instrument, directly produce high concentration micro nano ozone water output without auxiliary equipment, and the concentration and output can be set and adjusted according to different process requirements of different industries.

    ● New integrated technology and one button start-up are adopted;

    ● High concentration ozone can be fully dissolved in water to produce high concentration ozone bubble water;

    ● Mobile, easy to combine with existing equipment and facilities;

    ● It has the advantages of short time to reach saturation state, high efficiency and energy saving;

    ● Strong structure, few components, easy disassembly, easy maintenance and corrosion resistance;

    ● Nano scale ozone water is produced, and the particle size of nano ozone bubbles can reach 10-100nm;

    ● The concentration of nano ozone water can be adjusted online;

    ● Corrosion resistant, 304 / 316L / 2205 stainless steel / PTEF materials are used for flow passage parts;

    ● Industrial grade design is adopted to ensure 24-hour continuous operation, stable and reliable;

    ● Intelligent control, CPU integrated, main board intelligent monitoring.