Treatment of synthetic wastewater containing textile dyes with experimental constructed wetlands
type: CreativeWork
description: A global increase in industrialisation has resulted in the rapid growth of textile industries in developing countries, leading to a high rise in the overall discharge of a broad range of pollutants. Amongst these pollutants is dye wastewater, which frequently has mutagenic and carcinogenic effects on humans and animals, depending on the receiving watercourses as a source for drinking water. In contrast to traditional high-rate wastewater treatment units, passive biological treatment technologies, such as constructed wetlands are a sustainable and cost-effective alternative technology to treat large quantities of contaminated water, especially in places where land costs are low. Four small scale experiments were conducted between July 2014 and June 2017 using plastic containers simulating constructed wetland planted with Common Duckweed (Lemna minor) for assessing the system performance, as a polishing stage, for the treatment of synthetic wastewater containing dyes: acid blue 113 (AB113), reactive blue 198 (RB198), basic red 46 (BR46) and direct orange 46 (DO46), with the main focus on removal of the dyes. The novelty of this research was to cover five prominent gaps in the literature, related to the treatment of dye effluents using free-floating plant-based constructed wetland systems under hydroponic conditions. These gaps have not been previously investigated with this system, which include: treatment of four dyes, which have not been treated before using this economic system; evaluate the system performance and the removal mechanism, in detail, for long-term operation as a polishing stage; assess the performance of identical systems for treating the same dye wastewaters under both semi-natural and controlled conditions; studying the effect of pH adjustment during the operation period; and treatment of mixed dyes (real cases) of textile effluents. The overall findings showed that the systems removed BR46 more efficiently than the other dyes studied, and ponds con…
abstract: A global increase in industrialisation has resulted in the rapid growth of textile industries in developing countries, leading to a high rise in the overall discharge of a broad range of pollutants. Amongst these pollutants is dye wastewater, which frequently has mutagenic and carcinogenic effects on humans and animals, depending on the receiving watercourses as a source for drinking water. In contrast to traditional high-rate wastewater treatment units, passive biological treatment technologies, such as constructed wetlands are a sustainable and cost-effective alternative technology to treat large quantities of contaminated water, especially in places where land costs are low. Four small scale experiments were conducted between July 2014 and June 2017 using plastic containers simulating constructed wetland planted with Common Duckweed (Lemna minor) for assessing the system performance, as a polishing stage, for the treatment of synthetic wastewater containing dyes: acid blue 113 (AB113), reactive blue 198 (RB198), basic red 46 (BR46) and direct orange 46 (DO46), with the main focus on removal of the dyes. The novelty of this research was to cover five prominent gaps in the literature, related to the treatment of dye effluents using free-floating plant-based constructed wetland systems under hydroponic conditions. These gaps have not been previously investigated with this system, which include: treatment of four dyes, which have not been treated before using this economic system; evaluate the system performance and the removal mechanism, in detail, for long-term operation as a polishing stage; assess the performance of identical systems for treating the same dye wastewaters under both semi-natural and controlled conditions; studying the effect of pH adjustment during the operation period; and treatment of mixed dyes (real cases) of textile effluents. The overall findings showed that the systems removed BR46 more efficiently than the other dyes studied, and ponds con…
author: Yaseen, DA
language: en
date published: 2026
date modified: 2026-07-24T04:26:30Z
provider: U. of Salford
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: U. of Salford