Abstract
Some low-cost alternatives for water purification by solar energy are analyzed, mainly those feasible in rural communities. These alternatives were divided into thermal and photochemical processes and the advantages and limitations of each method are presented. Results of the efficiency of the purification processes using a flat solar collector, as well as polyethylene bags and containers and glass flasks directly exposed to the sun, are presented. The evaluation of a prototype showed that the process is useful even on cloudy days since it depends more on the quantity of total radiation than on direct radiation only. Experimental results show that the water from kitchen and bathroom can be treated by solar energy and its chemical oxygen demand reduces up to considerable limit that it can be recycled for gardening or for toilet flushing purpose. By employing catalyst recovery and reuse, the operation and maintenance cost reduces considerably.
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© 2011 Springer Science+Business Media B.V.
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Udovyk, O., Udovyk, O. (2011). Solar Water Purification at Household Level. In: Hlavinek, P., Winkler, I., Marsalek, J., Mahrikova, I. (eds) Advanced Water Supply and Wastewater Treatment: A Road to Safer Society and Environment. NATO Science for Peace and Security Series C: Environmental Security. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0280-6_9
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DOI: https://doi.org/10.1007/978-94-007-0280-6_9
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