Read e-book online Application of Hydrodynamic Cavitation in Environmental PDF

By Janusz Ozonek

ISBN-10: 0415616263

ISBN-13: 9780415616263

Containing the cutting-edge in hydrodynamic cavitation, the booklet comprises components. the 1st half offers the actual foundation of cavitation and a scientific type of assorted types of cavitation and their formation assets. distinctive recognition is paid to a bunch of things that advertise cavitation formation in average beverages. A normal version of cavitation is formulated in addition to a sub-model describing dynamics of the formation, improvement and cave in of cavitation bubbles. The sub-model additionally comprises results of cavitation bubble incidence at the liquid within the direct region of bubbles. ultimately, half one additionally incorporates a thermodynamic hydrocavitation version of water containing cavitation nuclei (natural waters). the second one half offers with the applying of hydrodynamic cavitation results to complex oxidation of gear that pollute the typical atmosphere. result of laboratory experiments at the program of cavitation results to decompose chosen natural compounds which rarely suffer biodegradation are offered, in addition to an idea of the cavitation phenomenon software on an commercial scale.

Application of Hydrodynamic Cavitation in Environmental Engineering might be necessary to pros facing the layout and useful software of hydrocavitation reactors, and to lecturers in environmental engineering.


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Extra resources for Application of Hydrodynamic Cavitation in Environmental Engineering

Example text

It is no doubt related to the cost of producing hydroxyl radicals using AOP methods. Besides, only the integration of chemical and biological oxidation methods has the greatest chance of being implemented practically in sewage treatment. Full degradation of pollutants in sewage using the advanced oxidation approach is not always possible, and above all relatively expensive. On the other hand, many pollutants found in sewage, particularly industrial are non-biodegradable, therefore this integration of both chemical and biological methods is necessary and beneficial.

15. , 2004). , 2007). 6 30 η = 0, σ ≠ o . 14. The influence of viscosity and surface tension on: a) bubble radius b) bubble surface speed (Wójs, 2004). 15 time 10–6 [s] b) 10 . 15. Changes in an imploding vapour bubble over time for: a) bubble radius, b) bubble wall velocity (Wójs, 2004). 3 Static equilibrium in a gas bubble Under cavitation conditions there is a possibility of undissolved gas remaining in the form of spherical micro-bubbles filled with gas or vapour, surrounded by a “protective” organic layer (Bagieński, 1998).

In advanced oxidation processes we have to deal with synergism, which means that the effect of simultaneously applying different AOPs has a greater effect than the sum of the effects of the individual processes applied alone. Synergism deals with, not only the degree of degradation of pollution, but also the mineralising rate of pollutants in sewage or the reduction in their toxicity. In advanced oxidation processes, from the process point of view, the important factors are the reaction rate and its productivity.

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Application of Hydrodynamic Cavitation in Environmental Engineering by Janusz Ozonek

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