O 77. PNEUMATIC WASTE COLLECTION SYSTEMS

Abstract: The rapid increase in urbanization and technology is, leading to increas in wastes and required to find innovative solutions on the waste minimization/recycling, decreasing of greenhouse gas emissions, less traffic, and increasing of aesthetical and ecological quality of municipalities. The transfer of wastes by using underground and pneumatic system, which is used by some cities in the world, is getting increasing interest every day. The working principle of this system, which may has a high cost of installation, is to collect waste from living and working areas by vacuuming with underground pipelines and to store them in different fractions in determined terminals. This system has been proven to be feasible and enhance the quality of social life. It has been observed from experimental studies that the emission per capita is reduced at high points, the recycling rates are increased, traffic from collecting trucks is decreased and the application areas have a more aesthetic structure. Also, the annual cost per house is reduced to about 1/3 of the conventional collection system. The efficiency of the system in local areas depends on the size of the collection network established. In addition, saving of time and ease of operation are considered to be some other advantages of the system, which increase the qualityo of human life and environment.