TÜBİTAK - 1507 - SME R&D START-UP SUPPORT PROGRAM
Development of an Integrated Water Recycling System for the Cotton Textile Industry and Investigation of its Effect on Product Quality
The only solution proposed to the textile industry to overcome water shortage has been the reverse osmosis system, which has a very high cost for all textile wastewater. No solution is proposed for the salty water that will be released as waste from this system. Therefore, in this study, zero wastewater discharge was targeted by developing an integrated wastewater recycling system consisting of coagulation/adsorption/ultra filtration pretreatment and nano+reverse osmosis posttreatment systems, which has not been done before and is economically applicable, specific to the Denizli textile industry. The proposed system has not been done before, and for the first time, water and salt water recycling was carried out at each step, based on product quality, with this study.
In this recycling system, the wastewater from the existing textile wastewater treatment system was reused in textile processes after being purified by an integrated advanced treatment system developed on a pilot scale.
In the system, chemical coagulation, activated carbon adsorption and ultra filtration treatment alternatives were used to minimize the amount of organic matter in the wastewater before membrane treatment systems.After these systems, purified water has been used in processes that do not require high water quality, such as washing, and pre-treated water has been purified with the nano filtration process and hardness, color and organic matter removal has been reduced to very low levels and used in textile wet processes. In cases where conductivity is required to be very low or nanofiltration is insufficient, the water passed through nanofiltration is passed through the reverse osmosis membrane process and offers the option of being reused in dyeing or bleaching systems.
Treatment with chemical coagulation, research of activated carbon absorption, research of chemical coagulation + active carbon absorption, particle analysis and selection of suitable membrane systems, establishment of an integrated pilot plant, usage in textile processes and product quality measurement methods were used and our cooperation with the University increased and the transformation of knowledge into practice was achieved and Cooperation projects in the field of environmental technologies will continue. The project can be applied to our entire textile industry and has a widespread impact.