Human Overpopulation and Water Pollution

Abstract

The increased human population is threatening the natural water resources by reducing flows and deteriorating quality. High levels contamination of fecal microbes in Indian water resources is one of the worst impact on natural environment. The incomplete sewage treatment in existing STPs is the root cause it, along with disposal of untreated sewage. Fecal microbes even after the secondary treatment demands the further reduction, hence, an alternative method of vertical flow constructed wetland was adopted to examine the efficiency of the system. The study was aimed to primarily to suggest the suitability and comparative performance of wetland species, P. australis and C. indica. Study revealed the importance of fibrous rooting system of C. indica which helps to enhance aerobicity within the system and cause the reduced number of microbes. The additive enhancement of physical mechanism as well as competition among microflora within the wetland system and excretions from roots of C. indica plant might have been the reason of the significant highest removal of microbial indicators.