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Constructed wetlands

Constructed wetlands

  • Wastewater irrigation of Salix Plantations - Hedemora Energy

    Type: 
    Product
    Objective:

    The largest and northern most full-scale system for wastewater irrigation of Salix plantations in Sweden.
    The local community in Hedemora has long experience in producing biofuel from Salix plantations. The cooperation between Hedemora Energi AB and local farmers has resulted in irrigation of 75 acres of Salix Plantations. The local farmers in the project are guaranteed to sell their biofuel to the local municipal heating plant. As a result the project is contributing to the local production and consumption.

  • Unjust waters: climate change, flooding and the urban poor in Africa

    Type: 
    Publication
    Publication date:
    Objective:

    Poor people living in hazardous and unhealthy environments in urban areas may find their difficulties compounded by the consequences of climate change. These include those who construct their shelters on steep, unstable hillsides, or along the foreshore on former mangrove swamps or tidal flats.

  • Climate change and the urban poor: risk and resilience in 15 of the world's most vulnerable cities

    Type: 
    Publication
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    Objective:

    This report outlines lessons learnt regarding the principal effects of climate change on 15 cities in low-income countries, and what makes them vulnerable to these effects. It notes that coastal cities are mostly located in tropical areas with hot and humid climates and low-lying land.

  • Contribution of Wetland Agriculture to Farmers' Livelihood in Rwanda

    Type: 
    Publication
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    Sectors:

    This article analyses factors that contribute to the livelihood of smallholder farmers living near the Cyabayaga and Rugeramigoziwetlands. Three tools were used: focus group discussion, formal surveys and Monitoring for Quality Improvement (MONQI). Farming systems in wetlands and on hillsides differ. Level of education, resource availability, land ownership and location have important impacts on the location and type of farming systems practised by households. The dependency of households on wetlands varies between sites.

  • The environment and climate change outlook of Pakistan

    Type: 
    Publication
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    Objective:

    A key cross sectoral challenge for Pakistan is to build a resilient interrelated socio economic and ecological system.

    Despite the generally arid nature of Pakistan's climate, 10 per cent (780,000 ha) of the total surface area of the country is covered by wetlands which are of global importance (GOP, IUCN and WWF, 2000). Due to growing population pressures and habitat loss exacerbated by climate change, the wetlands are facing increasing pressures.

  • Magnetic Colloid Petroleum Oil Clean-Up of Surface Depth and Shores

    Type: 
    Product
    Technology:

    Challenge: Oil spill contamination cannot be cleaned rapidly and completely from varied environments. Technology: Ferrofluids are colloidal dispersions of magnetic nanoparticles that can be manipulated with an external magnetic field. This invention proposes to apply ferrofluidic principles to the mitigation of oil contamination of solids (wetlands) water surfaces and water sub-surfaces. The particle size surfaces and dispersants can all be optimized for stabilizing oil removal collectability and water purification.

  • Waterharmonica: natural constructed wetlands to convert tretaed wastewater into a usable water

    Type: 
    Product
    Technology:

    Natural purification systems have already been used for years in The Netherlands to improve the quality of waste water before discharge or reuse. The first basic ideas design for the ‘Waterharmonica’ as the link between the Water Chain and the Water System were rewarded by the Foundation for Applied Water Research (STOWA) on its 25th anniversary in 1996. Since then Waterharmonicas have been constructed in various places in The Netherlands firstly on a small scale but now also on a large scale.

  • Diagnostic assessment of select environmental challenges valuation of biodiversity and ecosystem services in India

    Type: 
    Publication
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    Approach:

    This paper reports on a wide range of research that estimates the value of ecosystem services (ESS) in India, including those related to forests, grasslands, wetlands, mangroves, and coral reefs. Estimates for forest services are based on an extensive Indian Green Accounting study, from which the values of timber and non-timber (fodder, water recharge, prevention of soil erosion, etc.) have been taken. There is an added non-use value of forests as well as an update of the value for forest sequestration based on the latest estimates of trends in forest management.