Reuse Options of Reclaimed Waste Water in Chennai City

In the present research work Sholinganallur taluk which comes under the zone of Chennai city expansion area was taken for management of wastewater effectively. Overlay operation in GIS tool was performed by selected decentralized wastewater treatment site map on reclassified landuse map. A 1000 m buffer map was created around each decentralized wastewater treatment sites to suggest various reuse options. The landuse map within the buffer zone comprises of detailed classification of ward number and its boundary. The settlement area which falls in the buffer zones includes number of households and population density, educational institutions like schools, colleges, industrial buildings like IT buildings, manufacturing buildings, government offices, shopping complex, hospitals, hotels, restaurants, etc., public areas like parks, pavement area etc. and crop land, forest area, salt pan, sand bar etc. Reuse of treated wastewater is broadly categorized into two purposes namely potable and non potable purposes. Treated waste water for potable purpose such as for drinking and recharge of ground water require higher standard of water quality. Whereas the non potable reuse such as domestic purpose like gardening, toilet flushing, car washing, industrial reuse, recreational, agriculture, landscape irrigation, wetland applications etc requires low standard of treated waste water quality. The reuse options considered in the present study are the urban, Industrial, recreational, groundwater respectively.