What is Desalination?

Desalination is a process through which salt water is transformed into fresh water, thereby making is suitable for human consumption, irrigation or industrial purposes. Desalination is particularly important in areas where fresh water supplies are limited and drought prevails.

Today, worldwide, Desalination is considered as an extremely important Hydro process due to its usefulness in terms of water conservation, and the part it plays in progress and industrial growth. Large-scale Desalination typically involves the utilisation of energy, as well as specialised infrastructure. Our endeavour is to focus on improving this process and develop more cost-effective ways of carrying it out.

How It Helps

Every 20 years, the rate of the world’s water consumption doubles. It is projected that by the year 2025, the demand for water will exceed supply by 56%. With the supply of fresh water fast depleting, there is a clear and highly critical need for better ways in which to manage this precious natural resource on a global scale. Desalination has been proving extremely helpful as it:

Increases Water Supply

Increases water SupplyThe most important benefit of Desalination is that it increases the supply of usable water for industries and individuals located in areas where fresh water is in short supply.

Improves Quality of Water

Improves The Overall Quality Of WaterSometimes, even though the supply of fresh water is available, the water itself is dangerous for use due to bacterial contamination, ground water toxins, etc. Desalination can reduce these dangers and provide higher quality water.

Lowers Energy Costs

Lowers Energy CostsIt takes a great deal of energy to move fresh water from where it is abundant to where it is scarce. On-site Desalination plants can reduce energy usage by reducing the amount of water that must be moved by truck and other transportation methods to plants or factories located in water scarce areas.

Salient Features

  • Plant capacity available from 50 TPH to 1,000 TPH
  • Unit based multi-effect process for a good thermal efficiency and thus a high water output for the available heat
  • Adaptation to any waste heat source in the form of hot water or low-pressure vapour
  • In absence of waste heat, unit can operate on steam between 0.5 bar to 40.0 bar pressure available at site
  • Very low product water salinity independent of raw sea or brick water salinity

How It Works


M/s TATA Chemicals Ltd., Mithapur, Gujarat

Plant Capacity: 6276 M3 per day
Product Water Quality: TDS less than 25 ppm
Year of Commissioning: March 1997

Saurashtra Chemicals Limited, Porbandhar, Gujarat

Plant Capacity: 2160 M3 per day
Product Water Quality: TDS less than 25 ppm
Year of Commissioning: July 2003

To know more, send an e-mail to sales@kehems.com .