A small scale Multi-effect Distillation (MED) unit for rural micro enterprises: part I-design and fabrication

P.K. Sen, Padma Vasudevan Sen, Anurag Mudgal, S.N. Singh, S.K. Vyas, Philip Davies

Research output: Contribution to journalArticlepeer-review

Abstract

Removal of dissolved salts and toxic chemicals in water, especially at a few parts per million (ppm) levels is one of the most difficult problems. There are several methods used for water purification. The choice of the method depends mainly on the level of feed water salinity, source of energy and type of contaminants present. Distillation is an age old method which can remove all types of dissolved impurities from contaminated water. In multiple effect distillation (MED) latent heat of steam is recycled several times to produce many units of distilled water with one unit of primary steam input. This is already being used in large capacity plants for treating sea water. But the challenge lies in designing a system for small scale operations that can treat a few cubic meters of water per day, especially suitable for rural communities where the available water is brackish. A small scale MED unit with an extendable number of effects has been designed and analyzed for optimum yield in terms of total distillate produced.

Original languageEnglish
Pages (from-to)15-26
Number of pages12
JournalDesalination
Volume279
Issue number1-3
Early online date7 Dec 2010
DOIs
Publication statusPublished - 15 Sep 2011

Keywords

  • dissolved impurities
  • multiple effect distillation
  • total dissolved solids

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