Aqueous-phase conservation and management

Abstract This chapter explains how the quality and quantity of water resources are under threaten condition due to pressure from continuing population growth and urbanisation. There are many causes driving this crisis, but it is clear that freshwater and coastal ecosystem across the globe, upon which humanity has depended for millennia, are increasingly threatened. It is equally clear that future demand for water cannot be met unless wastewater management is revolutionized. Keeping the aforesaid facts in view the author has systematically explain the present status of various water bodies like river, natural lake and marine system and their sustainability for a healthy inhabitable world. World’s water resource will not change but the amount of wastewater produced is increasing, and the infrastructure and management systems are not adequate for this increasing volume. Globally, two million tons of sewage, industrial and agricultural waste is discharged into the world’s waterways. Keeping the urgency of this problem various short term and long term water treatment methods have been well reviewed. Additionally, latest technology to produce electricity and simultaneously cleaning the contaminated water bodies have been explained with commercialized examples.