Solid waste generation indexes in a port site

Abstract

The construction industry is one of the largest consumers of natural resources. As it is in a marine environment and due to its magnitude and the high production of Construction and Demolition Waste (CDW), port works have a polluting potential and the technical-scientific literature on the subject is incipient. The objective of this research was to critically evaluate waste generation indexes of CDW during the construction of a port. The monitoring of the solid waste management from the Dom Pedro II port site in Paranaguá, Paraná, was carried out for 20 months. Through the assessment applicable to waste management and field measurements, the solid waste management process was characterized in terms of the agents involved, origin, type, quantity, generation rate, reuse, and destination. The efficiency of the management process was evaluated, and waste generation and utilization of Key Performance Indicators, per capita and per area, were obtained. The composition, in mass, of the solid waste generated in the work was: metallic scrap (48%), wood scrap (29%), organic waste (10%), recyclable waste (8%), and hazardous waste (4%). Per capita monthly waste generation indicators were calculated as: organic waste (12.75 kg), outpatient waste (8.14g), hazardous waste (5.33kg), plastic cups (70.5 units), and PPE (3 .89 units). As for the built-up area, the average monthly generation of waste was calculated at 0.35 kg/m² (hazardous waste), 3.51 kg/m² (wood), 7.5 kg/m² (metallic scrap), and 0.97 kg /m² (organic). In addition to mapping opportunities for improvement, the calculated generation and utilization indexes can be used in the CDW management of similar works.

Keywords:
construction and demolition waste; ports and waterways; solid waste; waste management; reuse of waste