Performance of Porous-Venturi Microbubble Generator for Aeration Process

Lathifa Putri Afisna, Wibawa Endra Juwana, Indarto Indarto, Deendarlianto Deendarlianto, Fellando Martino Nugroho

Abstract


Qualified and preserved water is declining due to metal, waste, and hazardous chemicals contamination. Demand on fresh water raises and leads to the efforts on processing waste water with effective and efficient technology. Microbubble generator technology developed lately to result dissolved oxygen for raising microorganisms to decompose waste in waste water. This research used porous-ventury microbubble generator with 30° inlet angle and 20° outlet angle, placed in the center of 280 cm x 60 cm x 40 cm aquarium for experiment. This research aimed to find out bubble distribution and microbubble generator (MBG) performance. Measurement on bubble distribution conducted using Phantom Control Camera. Obtained data analyzed using MATLAB R2016a, while MBG performance measured using pressure transducer. Analysis conducted on variations of gas debit (0,1 lpm; 0,4 lpm., and 1 lpm) and water debit (30- 80 lpm) effects toward performance parameters, such as hydraulic power (Lw) and bubble generating efficiency (ηB). Results show that the greatest microbubbles’ diameter is 150- 500 μm, hydraulic power (Lw) increases with the inclining water debit (QL), effect of gas debit variation exert low effect towards Lw, and declining number of bubble generating efficiency (ηB) parameter with the inclining number of the water debit (QL).

Full Text:

PDF

References


B.E. Rittman, P.L. Carty, Environmental Biotechnology Principles and Aplication, Boston: Mc Graw Hill.

M. Sadatomi, A. Kawahara, K. Kano, A. Ohtomo, “Performance of New Micro-Bubble Generator With A Spherical Body in Flowing Water Tube”, in Experimental Thermal and Fluid Science 29, 615-623, 2005.

M. Sadatomi, A. Kawahara, H. Matsuura, S. Shikatani, “Micro-bubble Generation Rate and Bubble Dissolution Rate into Water by A Simple Multi Fluid Mixer With Orifice and Porous Tube”, in Experimental Thermal and Fluid Science 41, 23-30, 2012.

A. Gordiychuk, M. Svanera, S. Benini, P. Poesio, “Size distribution and Sauter mean diameter of micro bubbles for a Venturi type bubble generator”, in Experimental Thermal and Fluid Science 70, 51-60, 2016.

M. Ishikawa, K. Irabu, I. Teruya, Nitta, “PIV measurement of concentration flow using microbubble tracer”, Proc. The 6th International Symposium on Measurement Techniques for Multiphase Flow, 2009.

K.Tabei, S.Haruyama, S. Yamaguchi, “Study of Micro Bubble Generation by a Swirl Jet”, in Journal of Environment and Engineering, 2(1), 172 – 182, 2007.

A. Baylar, F. Ozkan, “Applications of Venturi Principle to Water Aeration Systems”, ”, in Environmental Fluid Mechanics, vol. 6, 341-357, 2006

Y.M. Lau, N.G. Deen, J.A.M. Kuipers, “Development of an Image Measurement Technique for Size Distribution in Dense Bubble Flow”, in Chemical Engineering Science 94, 20-29, 2013.

M. Kukizaki and M. Goto, “Size Control of Nanobubbles generated From Shirasu-Porous-Glass (SPG) Membranes”, in Journal of Membrane Science 281 (1-2), 386-396, 2006.

L. Changjun, L. Bin, T. Shengwei, Z. Haiguang, “A Theoritical Model for The Size Prediction of Single Bubble Formed Under Liquid Cross Flow”, in Chinese Journal of Chemical Engineering 18(5), 770-776, 2010.




DOI: https://doi.org/10.22219/jemmme.v2i2.5054

Refbacks

  • There are currently no refbacks.


Copyright (c) 2017 Lathifa Putri Afisna, Wibawa Endra Juwana, Indarto Indarto, Deendarlianto Deendarlianto, Fellando Martino Nugroho

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

 This work is lincensed under

a Creative Commons Attribution Non-Commercial 4.0 International License

 

Department of Mechanical Engineering
University of Muhammadiyah Malang
Jl. Tlogomas no. 246 Malang 65144

Mail us:
jemmme@umm.ac.id
jemmme2016@gmail.com

Phone:
+62 341 464318
ext. 128