Authors Instructions

9^th INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SCIENCE AND TECHNOLOGY
1^st - 3^rd SEPTEMBER 2005
Rhodes island, GREECE

INSTRUCTIONS TO THE AUTHORS

All abstracts should be between 400 - 500 words long and in English. All abstracts must be submitted by e-mail in IBM compatible Microsoft Word, or by fax or mail. The Registration Form must accompany the abstract submission.

Guidelines

Abstract format:

- should not exceed 500 words in lenght

- use title format and bold paper title, center at top of page

- center author(s) list providing name and affiliation

- single space abstract text

- use one (1) line space between abstract paragraphs

- do not use charts or graphs

- do not use macros

Abstract content:

- indicative of quality of work

- emphasize objectives and results

- cearly state paper status

- define goals and state hypothesis being tested

- state study accomplishments (current or potential)

- state new or innovative aspects of study

Submittal of Abstact:

- original abstract and completed Abstract Response Form

- provide information on primary author only

- all correspondance will be with primary author

Sample Abstract

Please download the sample document for abstract submissions (available in Adobe Acrobat format)

SIMULATION OF CIRCULATION IN AERATION TANKS

M. Latsa*, D. Kyrkilis*, A. Stamou**, D. Assimacopoulos*

* Department of Chemical Engineering
** Department of Civil Engineering National
Technical University of Athens

ABSTRACT

Aeration is one of the most common stages in the liquid waste clarification process. Most aeration tanks are equipped with aeration devices that inject oxygen to enhance the biodegradation of the liquid waste. In the present work the aeration with air injected at the bottom of a cylindrical tank is simulated. Two different numerical models were developed and their results are verified against published experimental data. The first model considers the liquid and gas phase to be a homogeneous fluid. The calculated velocities refer to the mixture of the phases. The second model considers two distinct phases, a liquid and a gas phase. Both models solve the momentum, continuity and k-e equations for the relevant phases. Velocity and volume fraction profiles portray the motion of the liquid and the extent of the aeration process....