WATER - Managing water supply + case studies (Singapore & MBC)
- Created by: aliceoliviaaa
- Created on: 25-05-18 09:20
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- Managing water supply
- SINGAPORE
- Adopted a holistic approach to meet a 6 million demand.
- 1. Collect EVERY DROP of water (since 2003 per capita consumption fallen from 165L per day to 150L per day).
- 2. re-use water endlessly - has cutting-edge technology to reuse grey-water.
- 3. desalination - 2 plants meet 25% of water demand.
- However, they import water from MALAYSIA
- Adopted a holistic approach to meet a 6 million demand.
- MERSEY BASIN CAMPAIGN
- aim to bring environmental improvements to River Mersey, Manchester ship canal and neighbouring rivers.
- encourage water front regeneration and improve water quality since 1985.
- PLAYERS - United Utilities, Local Councils and RSPB.
- rebranding the river also rebrands Liverpool and Manchester as cities of art.
- COST - £2.5bn
- Land prices increased
- Gentrification leads to pollution
- uneven distribution of water whereby money = power.
- Increased demand
- Hard engineering schemes (require capital and technology).
- WATER TRANSFERS
- the diversion of water from one drainage basin to another
- either by diverting a river or constructing a canal to transfer the water.
- CHINA's South-North Transfer Project
- Source area- experiences 60% reduced flow.
- the diversion of water from one drainage basin to another
- MEGA-DAMS
- 60% of major rivers impeded by dams
- THE NILE, ASWAN HIGH DAM
- High Evaporation losses from the water surface
- disruption of downstream sediment transport leading to EROSION
- DE-SALINATION (requires advanced technology and energy).
- Dissolved particles in sea water are fully removed to make water suitable for human use.
- SAUDI ARABIA, UAE already started this.
- using reverse osmosis and carbon nanotube membranes.
- WATER TRANSFERS
- Sustainable water management
- aims to: minimise wastage, ensure safe water access, guarantee an equal distribution.
- SMART IRRIGATION
- high priority. sprinkler systems replaced by automated spray tech and drip systems.
- HYDRO-PONICS
- growing crops in CO2 and temperature controlled green houses - plants are drip-fed nutrients without soil.
- RECYCLING OF GREY WATER
- produces water for agricultural use but not human consumption
- RAINWATER HARVESTING
- where people collect rainwater and store it in butts.
- FILTRATION TECH-NOLOGY
- there is little water which cannot be purified - it is effective.
- RESTORATION
- restoring damaged rivers, lakes and wetlands so they can play their role in the H cycle.
- Integrated drainage basin management (IWRM)
- ensure environmental quality
- water is used with maximum efficiency
- an even distribution
- Works well at community level, but not so well at larger river basins (Nile).
- SINGAPORE
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