The desalination core process is based on Reverse Osmosis Membrane technology, but stand alone, it doesn't provide safe drinking water. Pre and Post-treatment steps are required to condition the water before and after the reverse osmosis membrane process to make it suitable to your application.
I think it is a good idea as Singapore's water supply is very limited. It is also for us to prepare for future as we may not be allowed to buy water in another country. BUT, is desalinating salt water cost-effective? -.-
sea water goes through a pre-treatment process where suspended particles are removed. In the second stage, the water undergoes reverse osmosis (RO). This is the same technology used in the production of NEWater. The water produced is very pure and is remineralised in the third stage. After treatment, desalinated water is blended with treated water before it is supplied to homes and industries in the western part of Singapore.
Advantages: 1) Abundant water supply (as long as you have enough energy). 2) Water is 'soft'. Hard water comes from aquifers in chalky or limestone rock (eg. most of southern England). The lime scale builds up in pipes and can wreck appliances like washing machines in a few years.
Disadvantages: 1) Odd tasting water. 2) Uses huge amounts of energy so production of green-house gases is a side effect. 3) Discharges concentrated brine solution back to see - possibly destroying coastal flora and fauna. May make beaches unsuitable for bathing - destroying tourism. May destroy local fishing industry due to affects on environment. 4) Eye-saw. Takes up a lot of coastal area with large industrial plant. 5) Expensive water due to infrastructure and energy use. 6) Water delivery must be pumped up-hill to point of use, where as water normally is delivered down-hill from elevated dams. ie. Even more energy required.
I think desalinating water must be very expensive if not the whole world's water supply would be desalinated, and it might also require alot of manpower.
It is very useful
ReplyDeletewhat to do ar???
ReplyDeleteThe desalination core process is based on Reverse Osmosis Membrane technology, but stand alone, it doesn't provide safe drinking water.
ReplyDeletePre and Post-treatment steps are required to condition the water before and after the reverse osmosis membrane process to make it suitable to your application.
I think it is a good idea as Singapore's water supply is very limited. It is also for us to prepare for future as we may not be allowed to buy water in another country.
ReplyDeleteBUT, is desalinating salt water cost-effective? -.-
sea water goes through a pre-treatment process where suspended particles are removed. In the second stage, the water undergoes reverse osmosis (RO). This is the same technology used in the production of NEWater. The water produced is very pure and is remineralised in the third stage. After treatment, desalinated water is blended with treated water before it is supplied to homes and industries in the western part of Singapore.
ReplyDeletesource:
http://www.pub.gov.sg/water/Pages/DesalinatedWater.aspx
Advantages:
ReplyDelete1) Abundant water supply (as long as you have enough energy).
2) Water is 'soft'. Hard water comes from aquifers in chalky or limestone rock (eg. most of southern England). The lime scale builds up in pipes and can wreck appliances like washing machines in a few years.
Disadvantages:
1) Odd tasting water.
2) Uses huge amounts of energy so production of green-house gases is a side effect.
3) Discharges concentrated brine solution back to see - possibly destroying coastal flora and fauna. May make beaches unsuitable for bathing - destroying tourism. May destroy local fishing industry due to affects on environment.
4) Eye-saw. Takes up a lot of coastal area with large industrial plant.
5) Expensive water due to infrastructure and energy use.
6) Water delivery must be pumped up-hill to point of use, where as water normally is delivered down-hill from elevated dams. ie. Even more energy required.
:D
I think it a good idea as our water supply is very limited as we may not buy water from malaysia next time.but it may be too expensive
ReplyDeleteDesalination of sea water is effective.
ReplyDeleteadvantages:supply up to 10% of the nation's demand for water,it uses the reverse osmosis method to desalinate water.
ReplyDeletedisadvantages:high capital is required to build and operate the desalination plants
I think desalinating water must be very expensive if not the whole world's water supply would be desalinated, and it might also require alot of manpower.
ReplyDeleteUsing this method, Singapore will increase their water supply. But building desalination plant is quite expensive.
ReplyDeleteNEWater tastes and smell weird... I don't know why. Is there any way to remove the taste and smell? But at least is clean, I believe? xD
ReplyDelete:DDD water is precious, so do your best to save water! Singapore is lucky to hv enough supply of water.
seawater is treated so that we can drink fresh water
ReplyDeleteNEWater too sexy for us to drink so we turn to desalinated water
ReplyDelete