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Mahesh

25/07/22 07:28 AM IST

Low Temperature Thermal Desalination (LTTD) technology

In News 
  • A Desalination Plant has been developed by National Institute of Ocean Technology (NIOT), that will convert the saline or saltish seawater into drinking water. This technology has been successfully demonstrated in Lakshadweep islands.
Features of the plant 
  • The Desalination Plant is based on Low Temperature Thermal Desalination (LTTD) technology.
  • The LTTD technology converts the salt or saline water into potable drinking water.
  • LTTD technology was suitable for Lakshadweep islands, because there is a temperature difference of 15 degree Celsius between sea surface water and deep-sea water, as required by the technology.
LTTD Technology 
  • Low-temperature thermal desalination (LTTD) is a technique for desalination.
  • It works on the notion that; water evaporates at lower temperatures, at low pressures.
  • It utilizes vacuum pumps for creating a low pressure and low-temperature environment, resulting into evaporation of water at a temperature gradient of 8 °C.
  • Cooling water is supplied from deep sea depths, which is pumped up to condense evaporated water vapor.
  • We get purified water from the resulting condensate.
Source- The Hindu 

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