UDC 628.349
DOI 10.35776/VST.2024.12.04

Sukhareva Irina, Aminova Al’fiia, Tivonenko Il’ia, Mazitova Aliia

The use of catalysts in the oxidation method of wastewater treatment

Summary

The complex physical and chemical composition of the pollution of wastewater of chipboard materials production dictates the need for heavy expenditures for the operation of treatment facilities using several treatment methods. Wastewater of plywood panel plants contains phenols, formaldehyde and many other toxic substances; therefore, developing a method for their removal is an urgent task. One of the effective methods of removing these toxicants from wastewater is ozonation in the presence of catalysts. Since most catalysts are expensive, cheaper agents based on transition metals and their oxides with high activity and comparatively low cost are being sought. In this regard, the Department of Applied and Natural Sciences of the Ufa State Petroleum Technological University conducted research to find an effective and affordable catalyst for enhanced oxidation of phenol and oil products in wastewater under the action of ozone. Wastewater of a plywood-panel plant was used to study catalytic ozonation. The optimal purification conditions were determined by kinetic curves of phenol decomposition. The results of the experiments in catalytic ozonation of wastewater showed high purification efficiency. The obtained results afford to state that for increasing the efficiency of removing pollution from wastewater of plywood-panel plants, ozonation in the presence of Fe₂O₃ heterogeneous catalyst used in small quantities is required, therefore there is no need to remove iron (III) ions from wastewater. The studied purification method provides for reducing the phenol concentration to the standard value (0.01 mg/dm³).

Key words

wastewater , phenol , oxidation method , catalytic ozonation , heterogeneous catalyst , chipboard construction materials

For citation: Sukhareva I. A., Aminova A. F., Tivonenko I. V., Mazitova A. K. The use of catalysts in the oxidation method of wastewater treatment. Vodosnabzhenie i Sanitarnaia Tekhnika, 2024, no. 12, pp. 22–25. DOI: 10.35776/VST.2024.12.04. (In Russian).

The further text is accessible on a paid subscription.
For authorisation enter the login/password.
Or subscribe

REFERENCES

1. Pisarenko A. N., Stanford B. D., Yan D., Gerrity D., Snyder S. A. Effects of ozone and ozone/peroxide on trace organic contaminants and NDMA in drinking water and water reuse applications. Water Research, 2012, v. 46, pp. 316–326.
2. Gottschal Ch., Libra J. A., Saupe A. Application of ozone in combined processes. ozonation of water and waste water: A practical guide to understanding ozone and its applications. Second Edition. John Wiley & Sons, 2010, pp. 267–343.
3. Rakovsky S., Anachkov M., Zaikov G. Fields of ozone applications. Chemistry & Chemical Technology, 2009, v. 3, no. 2, pp. ­139–160.
4. Кофман В. Я. Новые окислительные технологии очистки воды и сточных вод (часть 1) (обзор зарубежных изданий) // Водоснабжение и санитарная техника. 2013. № 10. С. 68–78.
   Kofman V. Ia. New advanced oxidation technologies of water and wastewater treatment (part 1) (foreign publications review). Vodosnabzhenie i Sanitarnaia Tekhnika, 2013, no. 10, pp. 68–78. (In Russian).
5. Sukmilin A., Boonchom B., Jarusutthirak C. Catalytic ozonation using iron-doped water treatment sludge as a catalyst for treatment of phenol in synthetic wastewater. Environment and Natural Resources, 2019, v. 17, no. 2, pp. 87–95.
6. Tizaoui Ch., Mohammad-Salim H., Suhartono J. Multiwalled carbon nanotubes for heterogeneous nanocatalytic ozonation, Ozone. Science & Engineering, 2015, no. 37, pp. 269–278.
7. Centurião A. P. S. L., Baldissarelli V. Z., Scaratti G., de Amorim S. M. Enhanced ozonation degradation of petroleum refinery wastewater in the presence of oxide nanocatalysts. Environmental Technology, 2019, v. 40, pp. 1239–1249.
8. Khataee A. R., Kasiri M. B. Artificialneural networks modeling of contaminated water treatment processes by homogeneous and heterogeneous nanocatalysis. Journal of Molecular Catalysis A: Chemical, 2010, v. 331, pp. 86–100.