It is well known that large quantities of micropollutants such as pharmaceuticals, phytopharmaceuticals, personal care products, dyes and other man-made molecules enter the water. In this diploma work, a literature review on micropollutants in wastewater and their degradation using ultrafine ozone bubbles is given. In the experiment, the organic dye Plasmocorinth B and methylene blue, both dissolved in tap water and deionized water, were degraded. Their decomposition was monitored spectrophotometrically in the range between 200 and 800 nm. The corresponding calibration curves were obtained. From these curves, the unknown concentration of these two micropollutants can be determined based on the absorption spectrum.
To confirm the ease of spontaneous decomposition and photodecomposition of Plasmocorinth B and methylene blue in solution, the results before and after illumination with UV light for three hours were used. Advanced oxidation methods for wastewater purification are becoming increasingly important to ensure efficient removal of substances that are more resistant to biodegradation. One of the more efficient methods is purification with ozone. Therefore, for the main part of the research, solutions of Plasmocorinth B and methylene blue in water enriched with ultrafine ozone bubbles were prepared. The influence of ozone bubbles on their decomposition was monitored. The results show that both micropollutants are UV light resistant, which means that they are also difficult to degrade in the environment. The addition of ultrafine ozone bubbles to tap water helps to make their degradation somewhat more efficient.
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