Volume No. 3 Issue No.: 3 Page No.: 744-751 Jan-Mar 2009




Janhavi Inamdar*1 and S.K. Singh2

1. Sinhgad Institute of Technology, Lonavala, Pune-410401, Maharashtra (INDIA)
2. Delhi College of Engineering, New Delhi (INDIA)


Received on : December 26, 2008




Due to increase in population and industries, water scarcity is a major concern in cities and in rural areas also. This paper aims at recycling of household waste water by using solar energy which is in abundance in India. So ultimately it deals with water scarcity and energy scarcity together. Zero Effluent Discharge concept is mainly used for industries but here it is applied for household level. The broad objective of this paper is to evolve an energy efficient method for treatment of waste water, to explore the possibility of using solar detoxification for recycling of waste water and to develop the experimental set-up of the solar photo chemical reaction and investigate the effects of various operational parameters of the effluent treatment system, such as retention time, optimum catalyst concentration, intensity of light and its seasonal variation etc. In this paper we present an outline of these technologies with special reference to the recent work being carried out at Sinhgad Institute of Technology, Pune. Experimental results show that the water from kitchen and bathroom can be treated by solar detoxification and its Chemical oxygen Demand reduces up to considerable limit that it can be recycled for gardening or for toilet flushing purpose. Experimentation done in summer and winter season show that this method can be used in winter season also.


Keywords : Zero Effluent Discharge, Solar Detoxification, Photo catalyst TiO2, Water recycling, Retention time, Reactor design.