• Vol 6, No 6 (2015)
  • Mechanical Engineering

The Implementation of a Developed Microbubble Generator on the Aerobic Wastewater Treatment

Deendarlianto , Wiratni , Alva Edy Tontowi, Indarto , Anggita Gigih Wahyu Iriawan


Cite this article as:

Deendarlianto, Wiratni, Tontowi, A.E., Indarto., Iriawan, A.G.W., 2015. The Implementation of a Developed Microbubble Generator on the Aerobic Wastewater Treatment. International Journal of Technology. Volume 6(6), pp. 924-930

143
Downloads
Deendarlianto Department of Mechanical & Industrial Engineering, Faculty of Engineering, Gadjah Mada University, Jalan Grafika No. 2 Yogyakarta 55281, Indonesia
Wiratni Department of Chemical Engineering, Faculty of Engineering, Gadjah Mada University, Jalan Grafika No. 2 Yogyakarta 55281, Indonesia
Alva Edy Tontowi Department of Mechanical & Industrial Engineering, Faculty of Engineering, Gadjah Mada University, Jalan Grafika No. 2 Yogyakarta 55281, Indonesia
Indarto Department of Mechanical & Industrial Engineering, Faculty of Engineering, Gadjah Mada University, Jalan Grafika No. 2 Yogyakarta 55281, Indonesia
Anggita Gigih Wahyu Iriawan Department of Mechanical & Industrial Engineering, Faculty of Engineering, Gadjah Mada University, Jalan Grafika No. 2 Yogyakarta 55281, Indonesia
Email to Corresponding Author

Abstract
image

An experimental study to examine the capabilities of the microbubble generator (MBG) on aerobic wastewater treatment was carried out under laboratory and industrial conditions. The tested MBG types were porous pipe & orifice and an MBG with a spherical body and drilled holes. In the laboratory-testing condition, an MBG was placed at a depth of 40 cm from the water surface. Three different pressure transducers were installed around the body of the MBG in order to analyze the inlet water pressure, the air-suction pressure, and the pressure at the outlet of the MBG. Next, the bubble diameter was measured by capturing the bubble pictures using a digital camera and analyzed using a developed image-processing technique. In order to simulate the application of the microbubble generator in the industrial field, a feasibility test of the MBG in aerobic wastewater treatment was performed. The results show the increase in MBG quantity with a higher ability to increase the oxygen, and that it is necessary to arrange the placement of each MBG in configuration to minimize bubble coalescence. Furthermore, by using a bio-ball as the porous media for microorganism attachment in aerobic wastewater treatment, the feasibility test showed promising results. Carbon on demand (COD) could be reduced to around 354 mg/l. The value of dissolved Oxygen (DO) was larger than 2 mg/L. The Ph level remained at 6, and temperature remained no more than 35ºC, which meet the requirements of aerobic wastewater treatment.

Bubble generation efficiency, Freight aerobic wastewater treatment, Image-processing technique, Microbubble generator

References

Liu, C., Hiroshi, T., Zhang, J., Zhang, L., Yang, J., Huang, X., Kubota, N., 2013. Successful Application of Shirasu Porous Glass (SPG) Membrane System for Microbubble Aeration in Biofilm Reactor Treating Synthetic Wastewater. Separation and Purification Technology, Volume 103, pp. 53–59

Li, P., 2006. Development of Advanced Water Treatment Technology using Microbubbles. Dissertation of Keio University, Japan

Parmar, R., Kuma, S., Majumder, 2013. Microbubble Generation and Microbubble-aided Transport Intensification – A State-of-the-art Report, Chemical Engineering and Process: Process Intensification, Volume 64, pp.79–97

Sadatomi, M., Kawahara, A., Kano, A., Ohtomo, A., 2006. Performance of a New Microbubble Generator with a Spherical Body in a Flowing Water Tube. Experimental Thermal and Fluid Science, Volume 29, pp. 615–623

Sadatomi, M., Kawahara, A., Matsuura, H., Shikatani, S., 2008. Microbubble Generation and Bubble Dissolution in Water by a Multi-fluid Mixer with Orifice and Porous Tube. Kumamoto University, Japan


Table of Contents