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Integrated Water Resource Management in Brazil

Integrated Water Resource Management in Brazil

Carsten Lorz | Franz Makeschin | Holger Weiss

(2014)

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Book Details

Abstract

The complex interactions between water resources, land-use change and water technologies are a major issue in many emerging countries of Southern America. Usable water resources are affected by natural conditions, such as, strong seasonal contrasts and high climatic variability, and rapid changes of land use and land cover that is caused by the dramatic expansion of agricultural land and urbanization processes. 
So far, the effects of the changing climate have had minor effects on water resources. Although regional data is rather scarce, global climate models predict substantial changes of climatic conditions in the future. A further pressure is that demand for water supply and waste water, both in terms of amount and spatial expansion, is increasing rapidly due to higher population densities caused by natural population growth and migration as well as higher per capita consumption. 
Integrated Water Resource Management in Brazil aims to present the results of the joint project IWAS-AGUA DF which deals with problems, causes and solutions in water supply in scope of integrated water resource management in western Central Brazil. The basic idea of the IWRM approach to be presented is to show how natural conditions and human interference are interacting and how technologies as well as concepts might help to manage such water resource systems in a sustainable way. 
Authors: Carsten Lorz, Hochschule Weihenstephan-Triesdorf, University of Applied Sciences, Germany, Franz Makeschin,  Dresden University of Technology, Germany and Holger Weiss, Center for Environmental Research, Germany

Table of Contents

Section Title Page Action Price
Cover Cover
Contents v
Chapter 1: Introduction 1
1.1 Integrated Water Resource Management in Central Brazil 1
1.2 The Project IWAS-ÁGUA DF 1
1.3 The Study Region 2
1.3.1 Climate 2
1.3.2 Land use 3
1.3.3 Demographic development and water supply 6
1.4 References 7
Chapter 2: Climate change in Central Brazil 9
2.1 Introduction 9
2.2 Baseline Climate 10
2.2.1 Regional climate 10
2.2.2 Observations 11
2.2.2.1 Database (CLIMA-DF) 11
2.2.2.2 Climatology 1971–2000 and spatial distribution 12
2.2.2.3 Changes and trend analysis 13
2.3 Climate Change Scenarios 14
2.3.1 General Circulation Models 15
2.3.1.1 General Circulation Model output: multi-model ensemble and uncertainties 15
2.3.2 Regional climate models 15
2.3.2.1 Statistical downscaling (SDSM) 16
2.4 References 19
Chapter 3: Protection and exploitation of groundwater resources in Western Central Brazil 23
3.1 Introduction 23
3.2 Hydrogaphic Overview 24
3.3 Hydrogeological Overview 25
3.4 Case Studies 28
3.4.1 Numerical groundwater flow modelling for hydraulic system analysis in hydrological sensitive catchments – The Pipiripau River Basin 28
3.4.2 Geoelectrical resistivity tomography for groundwater quality characterization at the municipal waste disposal ‘Lixão do Jóquei’ 32
3.4.3 Characterization of groundwater recharge dynamics using stable isotope analyses 37
3.4.4 Artificial groundwater recharge for enhanced water supply management in the DF of Brazil 43
3.5 Concluding Remarks 45
3.6 References 46
Chapter 4: Land use management as part of Integrated Water Resource Management 49
4.1 Introduction 49
4.2 Analysis of Effects of Land Use History on Water Resources in the Pipiripau River Basin 50
4.3 Use of Simulation Models for Assessing Land Management Practices – Example Pipiripau River Basin 51
4.4 Letsmap Do Brasil – A Web-Based Planning Support Tool for Sediment Management in the Pipiripau River Basin 54
4.5 Sediment Sources and Sediment Management 58
4.6 References 59
Chapter 5: Urban structure types and their impact on water resources: A case study in the Distrito Federal of Brazil 61
5.1 Introduction 61
5.1.1 Background and objectives 61
5.2 State of the Art 62
5.2.1 General aspects of water-related issues in urban areas 62
5.2.2 The concept of Urban Structure Types 62
5.3 Methodology 63
5.4 Results for the Study Area Planaltina 67
5.5 Conclusion 70
5.6 References 70
Chapter 6: Water quality of tropical reservoirs in a changing world – the case of Lake Paranoá, Brasília, Brazil 73
6.1 Introduction 73
6.1.1 The IWAS approach 73
6.1.2 Lake Paranoá 73
6.1.2.1 General aspects 73
6.1.2.2 Water quality: previous studies 74
6.1.2.3 Sediment quality: previous studies 75
6.2 Metal(loid)s, Eutrophicators and Colloids 75
6.3 Characterization of DOC and TOC 78
6.4 The Occurence of Organic Micropollutants in Lake Paranoá 81
6.4.1 General aspects 81
6.4.2 Sampling and experimental details 82
6.4.3 Organic micropollutants in Lake Paranoá – analytical results 83
6.4.3.1 General results and tendencies 83
6.4.3.2 Risk matrix and key compounds 86
6.4.3.3 Stimulants and pharmaceuticals 87
6.4.3.4 Pesticides 88
6.4.3.5 Perfluorinated surfactants 88
6.4.3.6 Artificial sweeteners 89
6.4.3.7 X-ray contrast media 89
6.4.3.8 Other compounds 90
6.5 Conclusions 91
6.6 Acknowledgements 92
6.7 References 92
Chapter 7: Bridging the gap: Current and future drinking water treatment for a fast-growing megacity – Brasília, Distrito Federal 97
7.1 Introduction 97
7.2 Review of Existing Drinking Water Treatment 97
7.2.1 Water supply system in the DF 97
7.2.2 Water quality and influence of weather conditions 98
7.2.3 Removal of particulate matter 99
7.2.4 Removal of dissolved organic matter 100
7.3 Towards a Sustainable Water Supply in the Future 102
7.3.1 Possible upgrades for the better performance of conventional technologies 102
7.3.2 Expanding the water supply capacity 102
7.3.2.1 Lake Paranoá as a possible solution 102
7.3.2.2 Technological considerations for the treatment of Lake Paranoá water 103
7.3.3 Additional measures to bridge the gap between water demand and availability 104
7.4 Conclusions 105
7.5 Acknowledgements 105
7.6 References 105
Chapter 8: Developing the urban water system towards using the Paranoá Lake in Brasília as receptor and water resource 109
8.1 Introduction 109
8.1.1 Background and aims of urban water management 109
8.1.2 Situation in Brasília 110
8.2 Advanced Wastewater Treatment 112
8.2.1 Overview of advanced wastewater treatment technologies 112
8.2.1.1 Biodegradation and sorption in the activated sludge process 112
8.2.1.2 Membrane technology 113
8.2.1.3 Activated carbon adsorption 113
8.2.1.4 Advanced oxidation technologies 113
8.2.2 Conception, invitation of tenders and delivery of the pilot plant 113
8.2.3 Process design of the pilot plant 113
8.2.4 Flushing program 114
8.2.5 Testing phase WWTP Holzkirchen, Germany 114
8.2.6 Testing phase at WWTP ETE Nortè 116
8.3 Stormwater Management 118
8.3.1 Elements of stormwater management 118
8.3.2 Stormwater modeling at a small catchment of Brasília 121
8.4 Conclusions and Recommendations 123
8.5 References 124
Chapter 9: Capacity development as base element of Integrated Water Resource Management in Central Brazil 125
9.1 Introduction 125
9.2 Short Presentation of the Partners in Working Group Capacity Development 126
9.2.1 Companhia de Saneamento Ambiental do Distrito Federal (CAESB) 126
9.2.2 Sachsen Wasser (SaWa) and Kommunale Wasserwerke Leipzig (KWL) 126
9.3 Aproach 127
9.4 Sharing the Experience in Workshops (2010–11) 127
9.5 Specific Topics (2012–13) 128
9.5.1 Background of the second project phase 128
9.5.2 Implementation of a laboratory information management system 128
9.5.3 Implementation of a data management system 128
9.5.4 Energy efficiency measures 129
9.6 Results and Conclusions 129
9.7 Reference 129
Chapter 10: Lessons learned – conclusions 131
10.1 Processes in River Basins 131
10.2 Water Quality in Water Reservoirs 132
10.3 Technology 133
10.4 Capacity Development 133
10.5 Lessons Learned 133