Abstract

WATER POLLUTION AND TREATMENT TECHNOLOGIES - PAST AND PRESENT

Dr. Ranjeet Kaur*

Abstract

Wastewater is any water that has been adversely contaminated by different sources such as organic pollutants, bacteria and microorganisms, industrial effluent or any compound that has deterioted its initial quality. Current water and wastewater treatment technologies and infrastructure are reaching their limit for providing adequate water quality to meet human and environmental needs. The OECD Environmental Outlook to 2030[2] highlights i) water scarcity, ii) poor groundwater quality and iii) agricultural use of water and pollution of water as three environmental issues which are either not well managed, or are in a bad or worsening state requiring urgent attention. Presently Nanotechnology is gaining greater use in water control systems. It is envisaged as being particularly efficient for three key purposes: treatment and remediation, sensing and detection, and pollution prevention.

Keywords: sources, water pollution, water treatment, nanotechnology.