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URBAN STREAM REHABILITATION
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INTRODUCTION, OBJECTIVES AND IMPACTS
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Development of the urban areas Cropland, Animals
Rural homes Suburban development Industrial development Urban 1. Introduction, objectives & impacts
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Phases in Unsustainable Urban Development
Early Civilisation - Living in Nature - Low Level of Pollution Living in caves Defecation in nature 1. Introduction, objectives & impacts
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Phases in Unsustainable Urban Development
Moving to Streams - Beginnings of Pollution Garbage Defecation in nature 1. Introduction, objectives & impacts
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Phases in Unsustainable Urban Development
Uncontrolled Urbanisation (Occupation) of Flood Plain Streams as Recipients of Solid & Liquid Wastes Problems with Flooding Defecation in nature Liquid & Solid waste 1. Introduction, objectives & impacts
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Phases in Unsustainable Urban Development
Channelisation of Urban Streams Recipients of Solid & Liquid Wastes - Wastes & Stormwater Problems with Flooding & Clogging Liquid & Solid waste 1. Introduction, objectives & impacts
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Sewers Connected to Channelised Streams
Phases in Unsustainable Urban Development Sewers Connected to Channelised Streams 1. Introduction, objectives & impacts
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Phases in Unsustainable Urban Development
Uncontrolled Urbanisation in the Upper Parts of a Stream Building of Separate Sewers - Problem of Inlet Clogging 1. Introduction, objectives & impacts
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Renaturalisation of Urban Streams
Phases in Unsustainable Urban Development Renaturalisation of Urban Streams Back to Nature 1. Introduction, objectives & impacts
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Renaturalisation of Urban Streams
Back to Nature…
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BALANCE Self-sustaining coping capacity Natural conditions
1. Introduction, objectives & impacts
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IMBALANCE ! Self-sustaining coping capacity Point source Pollution
Self purifying (coping capacity potential) Waste water treatment IMBALANCE ! Diffuse source Pollution Self purifying (coping capacity potential) 1. Introduction, objectives & impacts
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Degradation of ecology
Self-sustaining coping capacity IMBALANCE ! Degradation of aquatic environment Degradation of ecology 1. Introduction, objectives & impacts
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? REHABILITATION Improvement of the river state in:
Rehabilitation objectives REHABILITATION Improvement of the river state in: Physical characteristics ? Chemical quality Ecological diversity Aesthetical appearance 1. Introduction, objectives & impacts
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? REHABILITATION Improvement of the river state in:
Rehabilitation objectives REHABILITATION Improvement of the river state in: Creation of habitats for bio-diversity Aesthetics (Amenities) ? Social improvement Maintenance cost 1. Introduction, objectives & impacts
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Social benefits Aesthetic benefits Nature Safety
Rehabilitation impacts REHABILITATION The main benefits are: Social benefits Aesthetic benefits Nature Safety 1. Introduction, objectives & impacts
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