Althaea officianali EFFICIENCY IN WASTEWATER TURBIDITY REMOVAL

Wastewater management in Kathmandu is a challenge to the government of Nepal. The current trend of wastewater disposal is to drain the effluents directly into the water recipients like Bagmati and other rivers and streams without any treatment, which cause serious environmental and public health problems besides destroying the aesthetic beauty of the city. This paper deals with the evaluation of wastewater management practices, challenges and possible solutions in Nepal based on published materials. The data shows that wastewater generation in Kathmandu valley has increased from 81x106 l/day in year 2000 to about 145x106 l/day in year 2014, which is 79 percent increase in 15 years. Wastewater must be treated before discharge in order to comply with wastewater legislations and guidelines. This can be achieved through decentralized treatment. There is a need of careful planning, adequate and suitable treatment and regular monitoring to achieve unpolluted wastewater discharge into receiving water bodies.