Pollution

4/17/2016
Group 1
Water Pollution
Water pollution is the contamination of water bodies(e.g. lakes, rivers,  oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.

Introduction
Water pollution is a major global problem which requires ongoing evaluation and revision of water resource policy at all levels.

Water pollution is the leading worldwide cause of deaths and diseases: it accounts for the deaths of more than 14,000 people daily. An estimated 580 people in India die of water pollution related illness every day.
About 90 percent of the water in the cities of China is polluted. As of 2007, half a billion Chinese had no access to safe drinking water.
in the most recent national report on water quality in the United States, 45 percent of assessed stream miles, 47% of assessed lake acres, and 32 percent of assessed bays and estuarine square miles were classified as polluted.

Current Situation
Causes
Effects
Sewage and domestic wastes effect human health resulting diseases such as cholera, typhoid, dysentery.

Industrial discharges contain Lead, arsenic, Mercury, Cadmium etc., which pose deleterious impacts in life systems
Lead – damages liver and kidney
Arsenic – lung cancer, ulcers in gastro intestinal tract
Cadmium – diarrhea, kidney cysts, bone deformation etc
Mercury – Neurological disorders

Agricultural discharges include fertilizers, pesticides which are toxic to both aquatic and human life.
4/17/2016
4/17/2016
4/17/2016
Prevention and Control
Sewage treatment plants

Integrated approach and organic farming

Ideal maintenance of plant upkeep in Industries

Management and legislation – CPCB

Water treatment
Primary treatment involves coagulation and flocculation
Secondary treatment involves disinfection process

Information dissemination through sensitization programs.




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