Hull Green and Blue Infrastructure – Design Strategy

This post is the third in a series based on the MARJAN MASOUDI’s project, ‘HULL GREEN AND BLUE INFRASTRUCTURE’ researched and developed by  as part of a taught module on the MA LANDSCAPE + URBANISM here at Kingston University.

These proposals include new green open space, which will result in parts of Hull developing green infrastructure (GI). The green infrastructure sets targets for water pollutant and flood, green spaces to increase biodiversity and reduce flood risk in water surface flood. GI is an important element in delivering these targets, as well as helping to attract new residents, tourists and high-quality employment to the town.  Source: Landscape Institute Position Statement , 2013, p.38

The design provides  a new network of pathways and cycle routs, open space provides places for residents and tourists, while the riparian planting in wetland along the River Humber banks supports native insects, birds and animals.

The diagram below illustrates the storm-water treatment process for urban runoff. The system improves the quality of runoff discharged into the River Humber, while separating the existing sewage system from the storm-water system to reduce flood risk.  Firstly, water partly infiltrates in to the soil through the permeable paving , and partly moves to the green side canals . Water then moves from canals to the rain garden, here plants absorb dissolved pollutants and water is filtered and over flow is delivered to the outlet pipe to the retention basin.  The retention basin sits below the dry dock platform near the River Humber and collects water. Clean water slowly filtrates into the water table and is also released into the River Humber.

water use 1

Existing Site Hydrology Diagram

The most important hydrological issue in the city is water surface flooding.  Existing combined traditional sewage and storm-water system can not absorb heavy rain flow, as happened in 2007. This sustainable storm water system has multiple functions including storm-water treatment, wildlife habitat, wetland park, urban green space.  A multifunctional separated storm-water system is proposed to collect and make delay in storm-water movement. 

green belt1

Greenbelt Diagram

Ecological and green connections are designed to make a green pathway and cycle way along the Humber River side, those link the Hull international port in the east, the historic city and city centre in the west to the Hull and Humber rivers. Added wetland park, urban green space, green canals, help provide flood control, create habitat, and provide attraction for residents and tourists.

river humber

Sustainable Hydrological System Diagram

The ecological scheme divided the site into different categories including permeable paving, side green canals, rain gardens, water tank and wetlands.  Green Side canals and permeable paving as collectors absorb, transfer and at the same time filter storm-water.  Storm-water is filtered in rain gardens, water tank and wetlands before being released into the rivers.

SUDS diagram

Sustainable Urban Drainage System Diagram

watergarden

Perspective Section

The above diagram illustrates water gardens (Vegetated Drainage Canals) along the pathway as a part of the sustainable hydrological system collects residential runoff. Here plants absorb dissolved pollutant with cleaned water slowly infiltrating into the soil to be released back to the Humber River.

To read earlier posts on this project follow links.

 

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