Wastewater treatment in textile wet processing

Wastewater treatment in textile wet processing

Textile wastewater is one of the most polluted wastewaters due to high chemical oxygen demand (COD) concentration, strong colour, high pH and temperature, and low biodegradability. These effluents can exhibit serious environmental problems and public health concerns if improperly disposed.

The textile industry globally
provides a huge income and employment in several countries. Besides, textile
manufacturing includes several sequencing processes that are characterised as
whole by consumption of resources, such as water, electricity, and fuel, and
usage of several types of chemicals. Another important load of textile
production on environment is the production of wastewater, which consists of
many impurities such as dyes and pigments, heavy metals, and surfactants with
high concentrations. This wastewater should be treated before discharging into
the surface water sources; otherwise, they can threaten the quality of water
source and wildlife. After the treatment of wastewater, sludge remains, which
includes high percentage of chemicals, and needs to be disposed with methods
used to filter hazardous waste. All of these have enormous impact on the environment,
which makes it necessary to increase the efficiency and sustainability of
processes to decrease the harm to the environment in long term.

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