Generation of radicals using discharge inside bubbles and its applications for water treatment

(1)研究了两个陶瓷扩散器在发泡系统中自由基的产生及其在水处理中的应用。对氧、氩和空气在300.335 nm范围内OH自由基的发光进行了测量。OH自由基发出的光强度与施加的电压成正比。过氧化氢（H_2O_2）在氧气中的最大浓度为40mg/l，在空气中的最大浓度为35mg /l。溶解臭氧浓度约为0.13 mg/l。(2)测定了水中气泡内排放物产生的臭氧。水面臭氧在氧气中的最大浓度约为6.4 g/Nm3，水中溶解臭氧约为0.3 mg/l。测量了OH自由基的发光强度，发现其随施加电压的增大而增大。去除水中的蓝色已被证实。(3)含乙酸的水虽已尝试过用排放产生的自由基将其分解为水，但其效果尚未得到明确的证实。另一种新方法是由水中加压供气产生沿水面排放。实验结果表明，该方法可以分解水中的乙酸。

(1) Generation of radicals in the foaming system using two ceramic diffusers and its applications to water treatment have been done. The measurements of light emissions from OH radicals in the range of 300.335 nm have been done is the oxygen, Ar and air. The light intensity emitted from OH radicals is proportional to the applied voltage. The maximum concentration of hydroperoxide (H_2O_2) obtained is 40mg/l in oxygen and 35 mg/l in air. The dissolved ozone concentration is about 0.13 mg/l.(2)The generated ozone using discharges inside bubbles in water has been measured. The maximum concentration of exhausted ozone from water surface in oxygen is about 6.4 g/Nm3 and dissolved ozone in water is about 0.3 mg/l. The intensity of light emission from OH radicals has been measured and it increases with the applied voltage. The removal of blue color in water has been confirmed.(3) Although the water including acetic acid has been tried to decompose it by the generated radicals produced by discharges is water, the effect has not been confirmed clearly Another new method which has discharge along the water surface generated by pressured fed gas in water. It has been confirmed that this method is possible to decompose the acetic acid in water.