Scholarly record
USING HYDRODYNAMIC CAVITATORS FOR WASTEWATER POST-TREATMENT AND DESINFECTION
Abstract
The article discusses an urgent problem of developing wastewater treatment technologies that ensure high efficiency with simultaneous reduction of energy consumption and mass and size of a plant. Cavitation treatment is one of the modern and promising physico-mechanical wastewater treatment methods. Cavitation is a rupture of dropping liquid under the action of tensile stresses due to the change of characteristics of the velocity and pressure fields occurring at rarefaction in the considered point of the liquid. During the rupture of dripping liquid cavitation bubbles (cavities) form filled with steam, gas or their mixture. Due to intensive vibration and high temperature at a single point, cavitation destroys actively organic compounds, colloids, cell membranes of microorganisms. Therefore, cavitation treatment may be an effective instrument for post-treatment and disinfection of waste waters. In this research an ejector-cavitator with a torus-shaped chamber combining features of a hydrodynamic cavitator, a water ejector and a mixer was studied. This unit is installed on a pump pressure line, it does not contain moving parts, ensures low energy consumption, has small weight and size parameters, and according to the results of the experiments, works reliably in a wide range of pressures and flow rates. The conducted researches proved the effect of wastewater disinfection and revealed a synergistic effect at a combined usage of cavitation and ozone.
Publication Impact Profile
Publication details
References12
Ingale M., Mahajani V. A novel way to treat refractory waste: Sonication followed by wet oxidation (SONIWO), Journal of Chemical Technology & Biotechnology, vol. 64 (1), pp 80 – 86, 1995.
Gogate Parag R., Pandit Aniruddha B. A review of imperative technologies for wastewater treatment I: oxidation technologies at ambient conditions, Advances in Environmental Research, vol. 8, pp 501–551, 2004.
Dular Matevž et.al. Use of hydrodynamic cavitation in (waste)water treatment, Ultrasonics Sonochemistry, vol. 29, pp 577–588, 2016.
Feng Hao, Barbosa-Cánovas Gustavo V., Weiss Jochen. Ultrasound Technologies for Food and Bioprocessing, Springer, 643 P, 2011.
Birkhoff G., Zarantonello E. Jets. Wakes and Cavities, per. s angl. V.P. Vakhomchik, M.M. Litvinov, M., MIR, 468 P, 1964.
Ivanov L.A. O primenenii kavitatorov (obzornaya statya). Energosberezhenie: Energosberegayuschie tekhnologii dlya promyshlennykh predpriyatiy, Miass, pp 28-38, 2008.
Pearsall I. Cavitation; per. s angl. Yu.F. Zhuravlyova, M., MIR, 98 P, 1975.
Arzumanov E.S. Kavitatsiya v mestnykh gidravlicheskikh soprotivleniyakh, M., Energiya, 304 P, 1978.
Petrov O.A., Vaytekhovich P.E. Issledovanie i modelirovanie gidrodinamicheskikh kavitatorov, Khimicheskaya promyshlennost segodnya, № 12, 52 P, 2003.
Voda. Obschie trebovaniya k otboru prob: GOST R 51592-2000. Vved. 20.04.2000, M, Izd-vo standartov, 46 P, 2000.
Gusev V.Yu., Klopovskiy K.S., Lopaev D.V. Fiziko-tekhnicheskie printsipy ekpress-vodopodgotovki s ispolzovaniem istochnikov ozona i ultrafioleta. Voda: Ekologiya i tekhnologiya: tez. dokl. II Mezhdunarodny congress, M., «SIBIKO International», 187 1996.
Alekseev S.E. Ozonirovanie v tekhnologii ochistki stochnykh vod. Ozon i drugie chistye okisliteli. Nauka i tekhnologii: Materialy 23-go Vserossiyskogo seminara. Pod red. V.V. Lunina, V.G. Samoylovicha i S.N. Tkachenko, M., MGU, pp 38-50, 2002.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
