Methods for waste waters treatment in textile industry

摘要

The processes of production of textiles or wet treatments and finishing processes of textile materials are hugeudconsumers of water with high quality. As a result of these various processes, considerable amounts of polluted water are released. This paper puts emphasis on the problem of environmental protection against waste waters generated by textile industry. The methods of pretreatment or purification of waste waters in the textile industry can be: Primary (screening, sedimentation, homogenization, neutralization, mechanical flocculation, chemical coagulation), Secondary (aerobic and anaerobic treatment, aerated lagoons, activated sludge process, trickling filtration, oxidation ditch andudpond) and Tertiary (membrane technologies, adsorption, oxidation technique, electrolytic precipitation and foamudfractionation, electrochemical processes, ion exchange method, photo catalytic degradation, thermal evaporation). The selection of the purification method depends on the composition and type of waste waters.