InstagramLinkedInE-MailXingFacebookX

Desalination News international

Scientists are looking for new ways to desalinate water using energy resources that reduce dependence on dwindling fossil fuels

Harnessing solar and geothermal energy for desalination.

The Middle East relies heavily on fossil fuels to drive modern desalination technologies that are used to grow food. Currently only 1 percent of desalinated water comes from renewable resources. Intermittent or low energy supplies are a problem for agricultural settings, where grid networks may not always stretch. Better ways to capture and store renewable energy resources could increase the sustainability of using desalinated water, making it cheaper and easier to use. “This is a moment of innovation. You can see that in Saudi Arabia, in Oman, in the Emirates and […]

Scientists are looking for new ways to desalinate water using energy resources that reduce dependence on dwindling fossil fuels2017-12-21T09:10:24+01:00

Enhancing thermal desalination with Antiscalants and Dispersants

Dow has introduced a series of water treatment polymers, aiming to prevent scaling or fouling on reverse osmosis (RO) membrane surfaces and hard water scale in industrial, commercial, institutional and public water systems.

The figure demonstrates the compatibility of inhibitor to brine containing high levels of calcium. The x-axis indicates concentration of Ca2+ in ppm while the y-axis indicates transmittance generated when an inhibitor precipitates to create a turbid solution. Somil Mehta, technical service and development manager at Dow Energy and Water Solutions, explained, “As filtered water is separated, the impurities from source water gets concentrated in remaining […]

Enhancing thermal desalination with Antiscalants and Dispersants2017-12-20T08:28:47+01:00

Caribbean Development Bank (CDB) approved US$29 million for Government of Antigua and Barbuda for recovery after Hurricane Irma

The Caribbean Development Bank (CDB) has approved US$29 million in funding to the Government of Antigua and Barbuda, to assist with recovery efforts after the passage of Hurricane Irma in September. The funds will be used to rehabilitate and reconstruct critical infrastructure in the transportation, education, water and sanitation, and agriculture sectors.

…

The project has several components. Planned infrastructure works include: reconstruction of 11km of road, and repair of a bridge, along with associated drainage works; reconstruction and rehabilitation of education institutions in both Antigua and Barbuda and construction of teacher accommodation in Barbuda; rehabilitation of the […]

Caribbean Development Bank (CDB) approved US$29 million for Government of Antigua and Barbuda for recovery after Hurricane Irma2017-12-20T07:51:37+01:00

Ion concentration polarization (ICP) – Low-Cost and Pump-Free Water Desalination

Low-cost small-scale water desalination could be very useful to ensure the supply of drinking water in developing and remote areas. Ion concentration polarization (ICP) is a desalination technique that requires little energy, which could make it suitable for such applications. The method works by applying a voltage to an ion-selective membrane, which causes a depletion of ions around the membrane. This zone repels charged species. However, the technique is usually performed using expensive microfluidic devices. Hong Liu and colleagues, Southeast University, Nanjing, China, have developed a low-cost, fabric-based desalination setup that uses ICP. The team used polyester fabric, cut […]

Ion concentration polarization (ICP) – Low-Cost and Pump-Free Water Desalination2017-12-18T16:27:04+01:00

Coming soon: DME e.V. Desalination Technology Map – Moers – Germany

Coming soon: DME e.V. Desalination Technology Map
Dienstag, Dezember 19, 2017

Comprehensive overview on 17 desalination technologies (part 1)

(in alphabetical order):

CDI – Cpacitive Deionization

ED/EDR – Electrodialysis (Reverse)

EDI – Electrodeionization

FD – Freeze-Thaw Desalination

FO – Forward Osmosis

GH – Gas Hydrates

HD – Humidification-Dehumidification

IX – Ion Exchange

MED – Multi-Effect-Distillation

MD – Membrane Distillation

MDC – Microbial Desalination Cells

MSF – Multistage Flash Evaporation

MVC – Mechanical VApor Compression

OTED – Ocean Thermal Energy Desalination

RO – Reverse Osmosis

RSE – Rapid Spray Evaporation

TVC – Thermal Vapor Compression

Introduction to the fundamentals of desalination (part 2)

Posted by Peter Tillack

(LINK!)

Coming soon: DME e.V. Desalination Technology Map – Moers – Germany2017-12-21T11:23:07+01:00

Monwabisi desalination plant starting side preparation – Cape Town – South Africa

The Monwabisi desalination plant is one of seven projects earmarked as part of the first phase of the City of Cape Town’s Additional Water Supply Programme. Site preparation is currently under way. „It is anticipated that the Monwabisi plant will produce a total of seven million litres of drinking water per day which will be fed into the water reticulation system to supplement current supply from the dams and other water sources. „A nine-week construction period is planned for the completion of the first phase comprising two million litres. The first drinking water generated by the desalination plant is […]

Monwabisi desalination plant starting side preparation – Cape Town – South Africa2017-12-18T16:11:51+01:00

China plans to add 600.000 m³/d Capacity of sea water desalination capacity

China plans to increase its sea water desalination capacity more than fivefold during the next three to five years to ease a water shortage on its inhabited islands. Around 100 sea water desalination projects will be built or upgraded in 16 coastal provinces and cities, adding 600,000 tonnes of daily desalination capacity to the existing capacity of 135,700 tonnes, according to a plan issued by the National Development and Reform Commission and the State Oceanic Administration. By 2020, desalinated sea water is expected to become the main source of water for islands suffering a severe water shortage, according to […]

China plans to add 600.000 m³/d Capacity of sea water desalination capacity2017-12-15T14:24:38+01:00

FEWA launches new project to establish desalination plant – UAE

The Director General of the Federal Electricity and Water Authority (FEWA) Mohammed Mohammed Saleh, unveiled the implementation of a project to establish a new desalination plant in UAQ, with a production capacity of 45m gallons per day, at a cost of Dhs900m. According to Saleh, the project is expected to take two years to be implemented, in partnership with the independent producer. Saleh added that the implementation of the project is part of the strategic plans of the FEWA which is keen to provide services at distinct levels contributing to the development of infrastructure of facilities to meet the […]

FEWA launches new project to establish desalination plant – UAE2017-12-15T14:20:00+01:00

Scalable and Continuous Water Deionization by Shock Electrodialysis – Entsalzen durch Elektroschock – MIT- USA

…

Die Physik hinter dem System der so genannten Schock-Elektrolyse ist teilweise noch unverstanden und beruht auf mikrofluiden Effekten. Dabei wird das zu entsalzende Wasser durch eine Fritte geleitet – also eine Art Glaskügelchenpulver –, die als mittlere Schicht zwischen Elektroden liegt. Wird Strom angelegt, entstehen im Wasserkörper lokal ionenreiche und -arme Bereiche. Erhöht sich die Stromstärke, schlägt ab einem bestimmten Punkt eine Schockwelle zwischen den ionenreichen und -armen Wasserlinsen durch und treibt diese durch eine starke Strömungswirkung in verschiedene Richtungen auseinander. Eine feste Trennmembran in einer vorausberechneten Position inmitten der induzierten Strömung hält salziges und Süßwasser dann getrennt, beschreiben die Wissenschaftler […]

Scalable and Continuous Water Deionization by Shock Electrodialysis – Entsalzen durch Elektroschock – MIT- USA2017-12-15T14:07:59+01:00

Synthetic, light-driven proton pump has the added potential capability to desalinate with direct solar power

By binding photosensitive dyes to common plastic membranes and adding water, chemists at the University of California, Irvine have made a new type of solar power generator. The device is similar to familiar silicon photovoltaic cells but differs in a fundamental way: Instead of being produced via electrons, its electricity comes from the motion of ions. Dubbed the “synthetic, light-driven proton pump” by its creators, the innovation – because of its ionic basis – has the added potential capability of taking the salt out of seawater. “The materials used to make such a device can be dirt-cheap,” said Shane […]

Synthetic, light-driven proton pump has the added potential capability to desalinate with direct solar power2017-12-15T13:51:19+01:00
Nach oben