Textile waste water treatment involves a multi-stage process including preliminary screening, homogenization, and neutralization, followed by physical/chemical methods like coagulation, flocculation, and adsorption to remove color and solids. Biological treatment is then used to break down organic materials, and advanced processes like membrane filtration, ozonation, and electrochemical methods are often employed for color and stubborn pollutant removal and water reuse.

Primary and secondary treatment.

Screening: Removes large solids like fibers, fluff, and hard pieces, as well as oils and grease.

Homogenization: Balances fluctuations in the wastewater’s flow rate and pollutant concentration, and can also cool hot water.

Neutralization: Adjusts the pH to an optimal level for subsequent treatment processes.

Physical and chemical treatment: Coagulation, flocculation, oxidation, and filtration are used to remove color, suspended solids, and fats. Adsorption is also a highly effective and cost-efficient method for removing color and other contaminants.

Tertiary and advanced treatment.

Biological treatment: Utilizes methods like activated sludge to degrade organic matter and reduce toxicity.

Advanced oxidation processes (AOPs): Techniques like ozonation, electrochemical oxidation, and Fenton processes are used for intense removal of recalcitrant organic compounds and color.

Membrane filtration: Processes like membrane bioreactors and other filtration techniques are used to achieve a high degree of purification, enabling water reuse.

Electrochemical methods: Electrocoagulation (EC) is a versatile method for treating various industrial wastewaters, including textile effluent, and can be effective at high flow rates.