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Latest Questions - Desalination
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Narsi posted a question Energy Efficient Desalination 1 year ago
Are there any emerging, highly energy efficient technologies / concepts that are commercial or nearly commercial for desalination of water, other than reverse osmosis (or which is a variant of reverse osmosis)?
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Even this mechanism appears to be an active transport of solutes and hence demanding for energy to operate against the gradient.
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Take the Desalination Challenge
- Reducing Energy Intensity of Desalination
- Reducing Sensitivity to Temperature Variations in Desalination Plants
- Reducing Costs of Energy Recovery Systems in Desalination Plants
- Improving Efficiency of Reverse Osmosis Membranes for Desalination
- Biofouling Management in Desalination Systems
- Perfecting Forward Osmosis Desalination Techniques
Latest Discussions - Desalination
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Kyzyl wants to discuss Water stress in China: Desalination takes centre stage, according to Frost & Sullivan on Environmental Expert 6 months ago
LONDON -- With China's tremendous growth, the migration of people from rural places into urban areas is becoming more significant. The expansion and the ... - http://www.environmental-expert.com/news/water-stress-in-china-desalination-takes-centre-stage-according-to-frost-sullivan-269139
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Arunpillai shared a video Solar 'Cucumber' 7 months ago
The "Solar Cucumber" - a smaller and more sustainable methods of desalination that could be based locally right in the communities that would most need them designed by UK-based conceptual designer Phil Pauley
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"The ‘Solar Cucumber‘ is an innovative desalination plant design with the potential to help water-starved communities in coastal environments. The solar-powered desalination unit turns seawater to drinkable freshwater at source, rather than miles away from the scene of a shortage. The mini bus unit uses multiple-effect humidification to evaporate and condense seawater while removing its salt content. Multiple-effect humidification replicates the normal environmental water cycle. In the case of the Solar Cucumber, it uses solar power and reverse osmosis to separate water from other substances, including salt. The system uses advanced non-stick-style materials to reduce maintenance and create an effectively self-cleaning system that produces fresh water and sea salt at source while reducing the need for costly and impractical transportation of water. In permanent off-shore installations, the Solar Cucumber’s anchor system would form part of an artificial reef encouraging the growth of local marine habitats and biodiversity" It is from http://inhabitat.com/solar-cucumber-harvests-fresh-drinking-water-from-the-ocean/ As the animated cartoon looks attractively, as though it to tell more softly, it is a lot of thoughtlessness from a technical position.
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Narsi says 9 months ago
New Paper Examines Future of Seawater Desalinization
A paper co-authored by William Phillip of the University of Notre Dame's Department of Chemical and Biomolecular Engineering and Menachem Elimelech, Robert Goizueta Professor of Environmental and Chemical Engineering at Yale University, appearing in this week's edition of the journal Science offers a critical review of the state of seawater desalination technology.
Elimelech and Phillip and examine how seawater desalination technology has advanced over the past 30 years, in what ways the state-of-the-art technology can be improved, and if seawater desalination is a sustainable technological solution to global water shortages.
http://www.sciencedaily.com/releases/2011/08/110804141757.htmin Desalination
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Narsi says 11 months ago
Desalination is big business - Desalination is a massive and growing industry worldwide -
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Narsi says 11 months ago
Desalination is big business - Desalination is a massive and growing industry worldwide -
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Narsi says 11 months ago
Water woes prompt California to rethink desalination - Threats of a drought later this year in California are prompting 20 water agencies to look at desalination for a routine source of water instead of as an emergency measure in California. The water agencies are faced with a four-fold threat this year: worsening drought, dwindling species of freshwater fish, crumbling plumbing systems and unyielding demand, according to the San Francisco Chronicle. - http://www.cleantech.com/news/4173/water-woes-prompt-california-rethin
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Narsi says 11 months ago
Water woes prompt California to rethink desalination - Threats of a drought later this year in California are prompting 20 water agencies to look at desalination for a routine source of water instead of as an emergency measure in California. The water agencies are faced with a four-fold threat this year: worsening drought, dwindling species of freshwater fish, crumbling plumbing systems and unyielding demand, according to the San Francisco Chronicle. - http://www.cleantech.com/news/4173/water-woes-prompt-california-rethin
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Narsi says 11 months ago
US Lags in Desalination Plants - But water agencies across the U.S. have typically shied away from desalination because of complaints about its energy use and environmental impacts. Although the U.S. is the source of much of today's membrane technology, the country has lagged in the number of facilities actually converting saltwater into drinking water. At the end of 2007, there were more than 13,080 desalination plants worldwide, but just 119 in the U.S., according to the International Desalination Association. - http://www.cleantech.com/news/4173/water-woes-prompt-california-rethin
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Narsi says 11 months ago
US Lags in Desalination Plants - But water agencies across the U.S. have typically shied away from desalination because of complaints about its energy use and environmental impacts. Although the U.S. is the source of much of today's membrane technology, the country has lagged in the number of facilities actually converting saltwater into drinking water. At the end of 2007, there were more than 13,080 desalination plants worldwide, but just 119 in the U.S., according to the International Desalination Association. - http://www.cleantech.com/news/4173/water-woes-prompt-california-rethin
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Narsi says 11 months ago
Desalination costs 5 times as much as water conservation - Water conservation costs $210 a year per acre-foot, while desalination costs more than $1,000 per acre-foot, according to a study last year by the Los Angeles Economic Development Council. - http://www.cleantech.com/news/4173/water-woes-prompt-california-rethin
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Narsi says 11 months ago
Desalination costs 5 times as much as water conservation - Water conservation costs $210 a year per acre-foot, while desalination costs more than $1,000 per acre-foot, according to a study last year by the Los Angeles Economic Development Council. - http://www.cleantech.com/news/4173/water-woes-prompt-california-rethin
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Narsi says 11 months ago
Saudi Arabia world's largest producer of desalinated water - Saudi Arabia is the world's largest producer of desalinated water, which makes up half the country's drinking supply - http://www.cleantech.com/news/4173/water-woes-prompt-california-rethin
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Narsi says 11 months ago
Saudi Arabia world's largest producer of desalinated water - Saudi Arabia is the world's largest producer of desalinated water, which makes up half the country's drinking supply - http://www.cleantech.com/news/4173/water-woes-prompt-california-rethin
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Narsi says 1 year ago
Israel recycles 70% of its wastewater. which is thrice the quantity of its nearest competitor Spain. Desalination plants supplying 500 million cu meter of water per year will be catering to 35% of the freshwater needs of the country by 2013.
Some of the Israeli water technology companies in India are:
1. IDE Technologies - thermal desalination for use in nuclear power generation, oil refineries and industrial plants.
2. Amiad Filtration Systems - ecofriendly filtration systems for industrial, municipal and agricultural.
3. Arrow Ecology - into biological treatment of municial solid waste, currently talking to potential partners in Delhi and Gujarat
4. Ayala Water and Ecology - using phytotechnology concept called Natural Biological System to treat water, soil and air pollution (involved in projects in and around Hyderabad)
5. Netafim - smart drip irrigation company; has manufacturing plants in Vadodara (Baroda) and Chennai, besides ongoing micro-irrigation projects in Gujarat, AP, Taminadu and Maharastra.in Desalination
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Narsi says 1 year ago
A Cambridge, Massachusetts-based desalination start-up has closed on a $10 million round of funding to develop its proprietary technology to produce clean, potable water from salt water using one tenth the amount of energy used in traditional desalination plants. http://bit.ly/5w5Un5
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Narsi says 1 year ago
One of the biggest problems of large-scale water desalination plants is that they require tremendous amounts of electricity to operate.
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Narsi says 1 year ago
THE dream of Adelaide-based Windesal to build a $1bn network of wind-powered desalination plants through South Australia has moved a step closer after German industrial giant Siemens signed a memorandum of understanding with the company.
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Narsi says 1 year ago
Wave-powered desalination pump permitted in Gulf - The waters of the Gulf of Mexico will see a novel offshore platform later this year, one that will use wave power to desalinate water - http://bit.ly/dbSeWN
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Narsi says 2 years ago
IBM, Saudis to open solar desalination plant - http://bit.ly/cKXMOh
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Kyzyl 8
months ago
Answer this question / Share a link@venusk, Some things in this method are stopping me to say yes. 1. The brines effluent that are directed into the sea. According Everest description it is highly concentrated brine. Initial water has 35,000ppm, received fresh water ~500 ppm of salts. Due to stated productivity it means 55,000 ppm in brine. 2. Stated productivity of fresh water is 12,460 kg/h means ~12cbm/h. Stated power consumption is 220kW means 18kWh/cbm. Is it energy effective? 3. Warming + 7CC usually colder level means changing of usually environmental surrounding. 4. The presented method has been patented in many variations, but not by authors of Everest.