Development of Floating Wastewater Treatment System Using Expired Life Jacket Materials from Aviation Industry

Abstract

This research developed a floating wastewater treatment system utilizing expired life jacket materials from the aviation industry to address dual environmental challenges: aviation waste management and community wastewater treatment under the circular economy framework. The system comprises floating structures made from life jacket foam, solar-powered aeration systems, and biological components. Results demonstrated high treatment efficiency with BOD reduction of 85.3%, COD reduction of 80.0%, TSS reduction of 87.4%, and DO increase of 275%, meeting all Pollution Control Department standards. Construction costs were 50% lower than conventional systems with a 2.4-year payback period. The study found that expired life jackets from three major Thai airlines could produce 6,200-7,500 treatment units annually. Case studies at Rangsit Canal Community and Khlong Lat Mayom Floating Market demonstrated successful water quality improvement and community income generation. This innovation supports sustainable development goals and creates a scalable waste-to-value management model.