Phytorid TechnologyA huge quantity of sewage which is generated in rural and urban areas remains untreated and disposed off in water bodies as is due to the limited capacities of centralised treatment. In order to rejuvenate the rivers and lakes it is extremely necessary to stop the flow of untreated waste from river basin to rivers. In order to make this feasible, selection of technology should consider working of the plant without electricity, requiring minimum maintenance and most importantly capacity to becoming self sustainable. This necessitates the use of natural methods, which are highly efficient and structured. National Environmental Engineering Research Institute (NEERI) has developed a novel technology based on natural method of treatment of sewage using constructed wetlands named Phytorid and is well patented nationally and internationally.