Removal of color and COD from textile wastewater using a combination of AOPS/UV and coagulation pre-treatment

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Authors

  • Dao Duy Khanh (Corresponding Author) Institute of Chemistry, Vietnam Academy of Science and Technology
  • Duong Tuan Hung Institute of Chemistry, Vietnam Academy of Science and Technology
  • Tran Huu Quang Institute of Chemistry, Vietnam Academy of Science and Technology
  • Tran Thi Kim Hoa Institute of Chemistry, Vietnam Academy of Science and Technology
  • Nguyen Thi Hue Institute of Chemistry, Vietnam Academy of Science and Technology
  • Nguyen Thi Hong Thuyet Institute of Chemistry, Vietnam Academy of Science and Technology

DOI:

https://doi.org/10.54939/1859-1043.j.mst.86.2023.86-94

Keywords:

Textile wastewater; Coagulation; AOPs/UV; H2O2/UV; S2O82-/UV; O3/UV; Color removal; COD removal.

Abstract

In this study, COD and color in textile dyeing wastewater were treated with the Ultraviolet-based Advanced Oxidation Processes (AOPs/UV) combined with a coagulation pretreatment. The results showed that the primary coagulation treatment can remove 49% COD (432 mg/L) and 50% color (465 Pt-Co). The secondary treatment by the AOPs/UV using ozone (O3) as oxidizing agent was found to be the most effective with removal efficiency COD and color were 96% (32 mg/L) and 95% (45 Pt-Co), respectively which can meet the highest discharge standards of current textile dyeing industry wastewater. While the AOPs/UV using S2O82- and H2O2 as oxidizing agents showed the COD removal efficiencies were 84% (134 mg/L) and 75% (214 mg/L) as well as the decolorization efficiencies were 75% (214 mg/L) and 85% (127 Pt-Co), respectively. These findings can be expected as technological orientation for design of treatment systems using different approaches from traditional ones such as microbiological and physico-chemical treatment systems. The AOPs/UV solution combined with coagulation pretreatment, therefore, can be an effective method applied to treat the COD and decolorization in the textile dyeing wastewater.

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Published

28-04-2023

How to Cite

Đào Duy, K., H. Dương Tuấn, Q. Trần Hữu, H. Trần Thị Kim, H. Nguyễn Thị, and T. Nguyễn Thị Hồng. “Removal of Color and COD from Textile Wastewater Using a Combination of AOPS/UV and Coagulation Pre-Treatment”. Journal of Military Science and Technology, vol. 86, no. 86, Apr. 2023, pp. 86-94, doi:10.54939/1859-1043.j.mst.86.2023.86-94.

Issue

Vol. 86 (2023)

Section

Research Articles