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Sewage Water Treatment Using Solar Thermal Energy: A Review

Research Area: Volume 6 Issue 2 Year: 2018
Type of Publication: Article Keywords: Solar energy,Sewage water, Filtration,solar stills
Authors:
  • Shrikant Gupta
  • Namish Mehta
  • Nilesh Diwakar
  • Rajeev Arya
Journal: IJNIST Volume: 6
Number: 2 Pages: 15-18
Month: July-Dec
ISSN: 2321-0468
Abstract:
Most of the sewage filtration systems are energy & chemical intensive, which consume high grade energy and many costly chemicals . These processes lead to increase in carbon footprints and various harmfull chemicals in treated water, which causes health hazards on mankind and environment. It is also lead to global warming and its very high load on sewage water treatment plant cause insufficient treated water for use and becomes threat to life sustainability. The potential of harnessing solar energy is most efficient and cost effective . In this paper, various solar thermal desalination methods such as direct and indirect methods have been discussed. The indirect methods are preferable for medium and large scale desalination systems, whereas the direct methods employing the solar stills are more suitable for small scale systems. The performance of the low cost solar stills can be improved with simple modification by using various locally available materials. These low cost stills can be easily and economically fabricated for meeting daily need of the fresh drinking water. These low cost solar stills are sufficient for the small households and communities living in islands, coastal areas. It can also be uses for distillation of brackish water for the population residing near river banks. Such a system also suitable for the fluoride affected area to remove fluoride from the water. The low cost solar stills are sufficient for removal of arsenic, mercury, cadmium, coliform, virus and bacteria.
Full text: IJNIST 6202.pdf

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