ANNOUNCEMENTS
Urban water bodies are facing huge crisis because of depleting water storages. This has threatened detention time and sustainability of water supplies in urban areas. Since revival through rain water has limited scope due to changes in rainfall pattern and land use pattern. Alternative hope is usage of domestic sewage water that can be treated naturally through bioremediation. This involves use of plants like Phragmites, Typha, Eichhornia, Canna, Myriophyllum etc which have the capability to treat water naturally by retaining nutrients in their body and by decreasing parameters like biochemical oxygen demand, chemical oxygen demand, and suspended solids. These plants also serve as sites for microbial growth as attached to their root surface which helps in lowering the BOD of the water. Through this study, we are trying to come up with best possible combination of species under various pollution control conditions that can serves as treatment methods for contaminated urban water bodies of Delhi. Through this, we will also try to select plants which are suitable for growth in climatic conditions of Delhi in various seasons. Usage of Gambusia fish has been proven effective for controlling breeding grounds of mosquitoes by feeding on its larvae. The oxygen released by the plants during photosynthesis helps in aeration and reduction in BOD level with the help of microbes. This helps in reducing the foul smell in the water body.
Keywords: domestic sewage, bioremediation, Typha, urban water bodies, pollution.
