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URBAN STREAM REHABILITATION. INTRODUCTION, OBJECTIVES AND IMPACTS.

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Presentation on theme: "URBAN STREAM REHABILITATION. INTRODUCTION, OBJECTIVES AND IMPACTS."— Presentation transcript:

1 URBAN STREAM REHABILITATION

2 INTRODUCTION, OBJECTIVES AND IMPACTS

3 Cropland, Animals Rural homes Suburban development Industrial development Urban 1. Introduction, objectives & impacts Development of the urban areas

4 Early Civilisation - Living in Nature - Low Level of Pollution Phases in Unsustainable Urban Development Living in caves Defecation in nature 1. Introduction, objectives & impacts

5 Moving to Streams - Beginnings of Pollution Phases in Unsustainable Urban Development Defecation in nature Garbage 1. Introduction, objectives & impacts

6 Uncontrolled Urbanisation (Occupation) of Flood Plain Streams as Recipients of Solid & Liquid Wastes Problems with Flooding Phases in Unsustainable Urban Development Liquid & Solid waste Defecation in nature 1. Introduction, objectives & impacts

7 Liquid & Solid waste Channelisation of Urban Streams Recipients of Solid & Liquid Wastes - Wastes & Stormwater Problems with Flooding & Clogging Phases in Unsustainable Urban Development 1. Introduction, objectives & impacts

8 Sewers Connected to Channelised Streams Phases in Unsustainable Urban Development 1. Introduction, objectives & impacts

9 Uncontrolled Urbanisation in the Upper Parts of a Stream Building of Separate Sewers - Problem of Inlet Clogging Phases in Unsustainable Urban Development 1. Introduction, objectives & impacts

10 Renaturalisation of Urban Streams Back to Nature Phases in Unsustainable Urban Development 1. Introduction, objectives & impacts

11 Renaturalisation of Urban Streams Back to Nature…

12 1. Introduction, objectives & impacts Natural conditions BALANCE Self-sustaining coping capacity

13 1. Introduction, objectives & impacts Point source Pollution Pollution SELF-PURIFICATION Self-sustaining coping capacity

14 1. Introduction, objectives & impacts BALANCE Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential)

15 1. Introduction, objectives & impacts Point source Pollution Pollution Self-sustaining coping capacity Self purifying (coping capacity potential) WASTE WATER TREATMENT

16 1. Introduction, objectives & impacts Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment BALANCE

17 1. Introduction, objectives & impacts Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment Diffuse source Pollution Pollution SELF-PURIFICATION

18 1. Introduction, objectives & impacts BALANCE Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment Diffuse source Pollution Pollution Self purifying (coping capacity potential)

19 1. Introduction, objectives & impacts Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment Diffuse source Pollution Pollution Self purifying (coping capacity potential) ?

20 1. Introduction, objectives & impacts Self-sustaining coping capacity Point source Pollution Pollution Self purifying (coping capacity potential) Waste water treatment Diffuse source Pollution Pollution Self purifying (coping capacity potential) IMBALANCE !

21 1. Introduction, objectives & impacts IMBALANCE ! Degradation of aquatic environment Degradation of ecology Self-sustaining coping capacity

22 1. Introduction, objectives & impacts Rehabilitation objectives REHABILITATION Improvement of the river statein: Improvement of the river state in: Physical characteristics Chemical quality Ecological diversity Aesthetical appearance ?

23 1. Introduction, objectives & impacts REHABILITATION Improvement of the river statein: Improvement of the river state in: Creation of habitats for bio-diversity Aesthetics (Amenities) Social improvement Maintenance cost Rehabilitation objectives ?

24 1. Introduction, objectives & impacts Rehabilitation impacts REHABILITATION The main benefits are: Social benefits Aesthetic benefits Nature Safety

25 1. Introduction, objectives & impacts For more information follow this link For more information follow this link


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