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VNUHCM Journal of

Environment and Earth Sciences

An official journal of Viet Nam National University Ho Chi Minh City, Viet Nam

ISSN: 3126-3623
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An Ana-Ano-MBR system for nutrient removal from brewery wastewater at various nitrate recirculation ratios

Thien Nu Thai Van 1
Hung Viet Dang 2, *
Hoa Thi Thanh Nguyen 3

  1. Viện Môi trường và Tài nguyên, ĐHQG-HCM
  2. Trường Đại học Bách Khoa, ĐHQG-HCM
  3. Trường Đại học Tài nguyên và Môi trường TP.HCM
Correspondence to: Hung Viet Dang, Trường Đại học Bách Khoa, ĐHQG-HCM. Email: [email protected].
Volume & Issue: Vol. 2 No. 2 (2018) | Page No.: 5-11 | DOI: 10.32508/stdjsee.v2i2.488
Published: 2019-05-29

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Copyright © 2018 by the author(s).

This article is published with open access by Viet Nam National University Ho Chi Minh City, Viet Nam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. 

Abstract

Anaerobic and anoxic variations were combined with membrane bioreactor to form an Anaerobic/Anoxic configuration in MBR-based (Ana-Ano-MBR) system for improving the system performance in terms of organic degradation and nutrient removal from brewery wastewater. The model of Ana-Ano-MBR system made from polyacrylic with the capacity of 42 liters was operated with organic loading rate of 0.75 kgCOD/m3.day. The results showed that for the nitrate recycling ratios of 100, 200, 300%, average NH4+-N and TN removal efficiencies of the model were 95.1 and 76.6, 98.5 and 89.6, 98.9 and 90.2%, respectively, and the output values of NH4+-N and TN were within the limits of Vietnam National Standards (QCVN 40:2011/BTNMT, column A). Treatment efficiencies of COD and TP were over 90% and below 60%, respectively, during the whole experiment period. Low phosphorus removal efficiency was the drawback of Ana-Ano-MBR system due to the lack of appropriate system configuration and operational conditions for PAOs’ growth and activity.

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