Hydrodynamics characterization of an airlift oxidation ditch membrane bioreactor (AOXMBR)

Publish place: Iran Membrane
Publish Year: 1394
نوع سند: مقاله کنفرانسی
زبان: English
View: 890

This Paper With 8 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

MEMBRANE02_121

تاریخ نمایه سازی: 22 مهر 1394

Abstract:

In this work, gas holdup as the hydrodynamic characteristics of a novel airlift oxidation ditch membrane bioreactor (AOXMBR) for wastewater treatment were studied. A new type of oxidation ditch which is proposed in this study consists of three different sections called as airlift, membranes unit (riser section) and down comer (channel section). It was found that the gas holdup values continuously increased with increase in superficial gas velocity and decrease in distance from sparger. Further, gas holdup in downcomer (liquid down flow channel) did not show any significant variations with changing the top clearance. The results show that the superficial gas velocity and top to bottom clearance ratio are the main design variables for gas holdup in the AOXMBR. Empirical correlations are presented which accurately predict gas holdup as a function of top and bottom clearances, distance from aeration zone and gas velocity.

Keywords:

Airlift oxidation ditch membrane bioreactor (AOXMBR) , Total gas holdup , Local gas holdup , Airlift , Membrane Bioreactor

Authors

f Pajoum Shariati

Islamic Azad University, Science and Research Branch, Tehran

m.r Mehrnia

IEM, Université Montpellier ۲, F-۳۴۰۹۵ Montpellier, France

m.h Sarrafzadeh

School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran

b Bonakdarpour

Biotechnology group, Chemical Engineering Department, Amir Kabir University of Technology, Tehran, Iran

مراجع و منابع این Paper:

لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :
  • R.S. Denton, "History and development of oxidation ditch". Process Biochem. ...
  • S. Xia, J. Liu, _ innovative integrated oxidation ditch with ...
  • A. Ushikubo, M. Yoshimura, M. Kato, G. Oyama, F. M. ...
  • N. Xu, L. Fan, H. Pang, H. Shi, "Feasibility study ...
  • D. Barnes, C. F. Forster, D. W. M. Johnstone, "Oxidation ...
  • G. M. Mikkel, A. Bruce, "Bell Oxidation Ditches in Wastewater ...
  • M. Tiranuntakul, _ Jegatheesan, P.A. Schneider, H.L. Fracchia, "Performance of ...
  • C. Zhao-Bo, C., Min-Hua, R. Nan-Qi , C. Zhi-Qiang, W. ...
  • K. J. Shim, I. K. Yoo, Y. M. Lee, "Design ...
  • S. Judd, The MBR Book, Elsevier, 2006. ...
  • S. Judd, _ status of membrane bioreactor technology.: Trend. Biotechnol. ...
  • F. Meng, SR. Chae, A. Drews, M. Kraume, H.S. Shin, ...
  • M. Sarioglu, G. Insel, N. Artan, D. Orhon, "Model evaluation ...
  • The Second Tran Mem bran eConference 26 & 27 May ...
  • Y. Chisti, F. Wenge, M. Moo-Young, "Relationship between riser and ...
  • نمایش کامل مراجع