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Treating Wastewater

Source: DST

 Context: Researchers from NIT Warangal and Prime Textiles, with support from IMPRINT, have developed a low-cost and eco-friendly technology to treat textile wastewater.


The technology combines biosurfactants, cavitation, and membrane processes to effectively remove pollutants from the effluent.

Technology Description
Biosurfactants Biosurfactants are surface-active compounds produced by microorganisms. In the context of wastewater treatment, biosurfactants are used to aid in the removal of dyes from textile effluent.
Cavitation Cavitation is a process in which pressure variations in a liquid create countless small cavities that rapidly form and implode. In wastewater treatment, cavitation is employed as an advanced oxidation process (AOP) to destroy various types of pollutants. It helps in reducing installation costs and carbon footprint.
Membrane Processes Membrane processes involve the use of selectively permeable membranes to separate contaminants from water or wastewater. In the case of textile effluent treatment, the membrane is modified to decrease pore size and enhance performance. It effectively separates pollutants, resulting in cleaner water.


Usage: The treated water can be used for agricultural activities and cleaning purposes. The technology offers a sustainable solution for textile effluent, with the potential to replace existing treatment plants due to its affordability and environmental benefits.


About IMPRINT (Impacting Research Innovation and Technology) India

It is a joint initiative (launched in 2015) of the Indian Institutes of Technology (IITs) and the Indian Institute of Science (IISc).


  • Aim: It aims to boost research and innovation in ten technology domains relevant to India, such as healthcare, energy, and manufacturing. It further aims to reduce dependence on foreign technology and measure the impact of research efforts on people’s lives.
  • Process: The program provides funding and support for research projects to address major engineering and technology challenges.
  • Ministry: HRD Ministry