Can printing and dyeing wastewater be treated?

In this study, printing and dyeing wastewater treatment technologies were examined. This wastewater contains a high concentration of dyes, salts, and other contaminants. Physicochemical processes have several limitations to treat the wastewater. Adsorption technology can result in dye rejection rates of over 90%.

What technologies are used to treat printing and dyeing wastewater?

The printing and dyeing wastewater (PDW) contains a high concentration of dyes, salts, and other contaminants. This study is a review of published literature that utilised various technologies for the treatment of PDW. The studied technologies include adsorption, membrane technology, advanced oxidation processes, and biological processes.

Are high-rate anaerobic biological processes effective for textile printing and dyeing wastewater?

Among them, the anaerobic biological processes have been proven to be effective for the treatment of high-concentration textile printing and dyeing wastewater. In this mini-review, recent advances on high-rate anaerobic technologies for such purposes are reviewed.

Can biological processes be used for textile printing & dyeing wastewater?

Alternatively, biological processes with limited energy consumption, low cost and high efficiency are considered as promising technologies. Among them, the anaerobic biological processes have been proven to be effective for the treatment of high-concentration textile printing and dyeing wastewater.

Can aerobic activated sludge be used for textile printing & dyeing wastewater?

For example, the aerobic activated sludge technology has been reported for the treatment of textile printing and dyeing wastewater, although it still faces certain intractable issues such as excess sludge expansion, solid sludge treatment, and foam formation (Qiu et al. 2013).

Can anaerobic reactor decolorize textile printing & dyeing wastewater?

Generally, excellent decolorization of textile printing and dyeing wastewater can be obtained under anaerobic conditions. An anaerobic reactor can not only break down the chromophore groups of dyes, but also degrade certain amount of compounds like dyes, slurry, and additives (Wang et al. 2015).