Cordoba, Rodrigo Eduardo (2014) Study of the influence of leachates from civil construction waste landfills on water resource quality. PhD thesis, Universidade de São Paulo, Brazil.
Abstract
In Brazil, the resolutions nº 307/2002 and nº 448/2012 of the National Environmental Council (CONAMA) define that the construction and demolition (C&D) class A – reusable or recyclable wastes as aggregates, such as ceramic components, grout and concrete –, if not reused or recycled as aggregates, should be going to C&D wastes landfill. These wastes must be disposed in the soil for the reservation of segregated materials for future use or future use of the area. However, these landfills receive small quantities of wastes from other sources and non-inert wastes. This fact can be aggravated because the C&D wastes are disposed in these unlined landfills and without drains of leachate. In this context, the C&D wastes leachate may migrate to water supplies causing risks to both human health and the environment. In an attempt to contribute to this area of knowledge, this project aims to investigate the leachate influence of C&D waste landfills on the quality of water resources. A survey will be conducted in three stages – analysis of the environmental history of the C&D wastes landfill of São Carlos-SP, simulation of leachate samples of C&D wastes lysimeters (saturated and unsaturated), and study of the C&D wastes landfill of the city through the collection of groundwater (4 points). Results of the research classified, for metals, the samples of aggregates of C&D wastes class A - such as ceramic components (bricks, blocks), grout and concrete – as non-hazardous and non-inert. Physical and chemical interactions of C&D wastes and groundwater were observed. The presence of these contaminants could affect the use of this water for human consumption. The parameters that exceeded the maximum value for human consumption were: sulfate (950 mg/L), hardness (11,280 mg/L), color (124 uH), Pb (0.36 mg/L), Cd (0.075 mg/L) , Ni (0.088 mg/L), Fe (0.658 mg/L), Ba (1,205 mg/L) Cr (0.125 mg/L) Mn (0,297 mg/L), and Al (3.44 mg/L ).The research identified requirements for improvement projects, execution and control of C&D wastes landfills to minimize future potential adverse impacts generated by these residues in water resources.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Thesis advisor: | Schalch, Valdir |
| Uncontrolled Keywords: | leachate; construction and demolition landfill; inert landfill; environmental management |
| Index terms: | Brazil, presence, history, resolution, landfill, survey, construction waste, water supply, environmental management, aggregate, consumption, metal, human health, groundwater, interaction, water resource, construction and demolition, improvement project |
| Subjects: | water management, waste management, behavioral psychology, sustainability assessment, Geography, materials science, public and environmental health, architectural and construction history, infrastructure and transport systems, production management, traditional and composite building materials, consumer economics, environmental science, conflict resolution, environmental engineering, data collection methods |
| Topics: | Project Management, Stakeholder Management, Sustainability, Research Practice, Health and Safety, Geographical Context, Construction Materials, Engineering Principles |
| Descriptive scope: | 4 PCTE |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here