Decentralized Low Cost Wastewater Treatment Plant Based on Phytoremediation and Bagasse Fly Ash as Natural Filtering Media

The decentralized waste water treatment technique provides check to the over exploitation of available fresh water by providing a sustainable and eco-friendly method of treatment of the wastewater with zero energy inputs and lesser complex machineries. The DEWATS can be implemented at location where the centralized treatment facility is not feasible, also it can be implemented at commercial, industrial and residential areas where the sewage and sullage can be treated and reused for various purposes. Natural filtering materials such as Bagasse and Jatropha seeds are used and compared against BOD and COD removal. This paper illustrates the basic design criteria of DEWATS, its functioning and application in various areas.