Study on optimizing production scheduling for water-saving in textile dyeing industry

Textile dyeing industries need huge quantity of freshwater for textile dyeing, and discharges a huge amount of wastewater, which can inevitably lead to serious water environmental problems. Genetic algorithm (GA) was used in this paper for the optimization of dyeing production schedule, and it aimed to reduce the freshwater consumption by optimization of scheduling based on dyeing color and depth. Then a scheduling system with a database and a MATLAB program coupling with dynamic genetic algorithm was established and developed. The system was implemented in a typical textile dyeing enterprise which rescheduled about 50-70 orders with unexpected orders insert as a case study. The results showed that compared to traditional production scheduling, the optimizing production scheduling could reduce freshwater consumption about 18.4-21%.