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VNUHCM Journal of

Science and Technology Development

An official journal of Viet Nam National University Ho Chi Minh City, Viet Nam since 1997

ISSN: 1859-0128
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TREATMENT OF WASTEWATER FROM MOLASSES-BASED ALCOHOL DISTILLERIES BY UV/O3 OXIDATION PROCESS

Phuoc Van Nguyen 1, *
Dzung Van Nguyen 2
Phuong Thi Thanh Nguyen 1
Thang Quoc Le 3

  1. Institute of Environment and Resources, VNU – HCM
  2. Institute of Chemical Technologies, Vietnam Academy of Science and Technology
  3. Research and Development Centre for Petroleum Safety and Environment, Vietnam Petroleum Institute
Correspondence to: Phuoc Van Nguyen, Institute of Environment and Resources, VNU – HCM. Email: pvphuc@hcmuns.edu.vn.
Volume & Issue: Vol. 13 No. 3 (2010) | Page No.: 40-53 | DOI: 10.32508/stdj.v13i3.2142
Published: 2010-09-30

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Copyright © 2010 by the author(s).

Copyright The Author(s) 2023. This article is published with open access by Vietnam National University, Ho Chi Minh city, Vietnam. 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

The treatment of wastewater from molasses – based alcohol distilleries in Viet Nam is still an unmanageable problem. This kind of wastewater contains high organic components which is difficult to biodegradation. Survey results on molasses – based alcohol distilleries waste water after biological treatment determined that the composition of wastewater also contains a considerable amount of organic compounds with high COD about 1300 - 1800 mg/L. Research results on wastewater after biodegradation in laboratory conditions by using advanced oxidation technologies demonstrated that the UV/ozone oxidation system is more efficient than the Ozone system UV OZONE in which the COD and colour treatment efficiency is higher from 4,2 – 22%. By using modeling method with the 5.0 software mode, this study determined the optimal reaction conditions for the model UV / ozone: pH = 9, O3 concentration = 54 mg/h; UV power = 8W/h. The treatment efficiency can reach 100% and 93% of colour and COD respectively after 120 minutes. The study also demonstrated that the presence of anions such as Cl-, SO42-, HCO3- had a significant impact on the efficiency of the oxidation process.

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