emil-hartman urban watermangement eco city china

7/30/2019 Emil-hartman Urban Watermangement Eco City China

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Integrated Urban Water ManagementEco-city Caofeidian, China

ir. E.C. Hartman & ir. J.H. Alberts consultants urban water management at DHVB.V.

Tiffany Tsui, Team Leader Sustainability at DHV China

Dr. Zhai Jun, Associate Professor on Water Treatment and Management, Faculty of Urban

Construction and Environmental Engineering, Chongqing University


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Coastal Development China


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Sever water Stress

Water stress

Balance areas

Balance of water supply and water demand

More than 400 cities of 600 cities are short of water,and more than 100 cities are severely short of water.The owned water source by a person is 2200m3,that is a quarter of the world average level.


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Water is the guiding principle for

Coastal Urban Development

Coastal Urban Development requires

balancing between

value creationand cost-effectiveness


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Value Creation

New Land

Coastal Landscaping

Water Fronts

Leisure, Yachting


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Floating pavilion


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Key-issues

Coastal and Urban Flooding

Cost-effective reclamation

Prevent Salinization

Water Resource Management (Fresh water supply and

fresh water storage)

Ecological Development


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Bohai Sea region

Location:

250 kilometers south of

the capital Beijing along

the shore of the Bohai

Sea.


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Caofeidian

Tianjin

Cangzhou

Bohai Sea


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CAOFEIDIANINTERNATIONAL ECO-CITY


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Main goals of Planning Caofeidian Eco-city

Showcase of: Energy efficiency and minimization of CO2 emission

Close-Loop economy

water and land efficient development


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Masterplan


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Start-up area


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Water Challenges for Caofeidian Eco-City

Severe shortage of fresh water resources(limited rainfall, high evaporation, and

polluted rivers)

Brackish soil and groundwater

Pollution of fresh water resources

Over-extraction of the groundwater

Groundwater level subsidence

Severe intrusion of salt water Fragile ecological environment


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Focus on campus area as leading

example


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Land

scaping

Ground watermanagementWater system

Sustainable water management for

Caofeidian Eco-City

Optimalization and combination

of 3 disciplines leads to a set of

design principles

Minimize the use ofdrinking water

Storage of available rain and river water in short wet season

Rainwater will be used for landscape irrigation

Separate greywater and blackwater

Minimize the effect of wastewater by treating the wastewater to a

level required by the receiving water system

Re-use of treated waste water

Drip irrigation


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Re-use of grey water

Water balance study:

There is more than enough greywater to meet the irrigationdemands

Grey waste water is locallytreated and used as alternativefresh water source for irrigation ofparks year-round.

Biological Aerated Filter:

Small footprint

Limited moving parts

Can be automated easily

Experience with similar projects


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Rain water collection and storage


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Fresh water storage capacity

Canal buffers for temporary rain water storage

All collected rainwater discharges intocentral canal or

will be infiltrated into the ground


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Rainwater collection and infiltration

Green roof for Semi-basement Parking lots

Infiltration storm water ditches

Porous pavements
http://i.treehugger.com/files/th_images/turfstone.jpg


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Water harvesting in patios

Cobble ditch along footpaths Planting soil elevation is a little lower than pavement

Use permeable crates to develop local waterstorage

Cobble ditchCobble ditch


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Fresh water infiltration and recovery

Store fresh water in de ground (minimize evaporation)Dividing fresh water and brackish water


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0m = LAT

+2.0m

+4.5m

+1.0m

Fresh Water Lenses


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Follow-up

Construction of the urban water and landscape design

started in 2011.

The conceptual design is one of the corner stones of the

total masterplan for eco-city Caofeidian (6.4 km2) and is an

example for the development of other cities located in waterscarce regions worldwide.


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Blue-print for total Eco-city

Reservoir

Urban Area

Tidal

Gate

Urban Water System: Circulation scenario with Algae Pond

Algae Lagoon

Water Resource Management

Innovative Solutions

WWTP


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Thank You

emil-hartman urban watermangement eco city china

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