Prevention and control of water pollution, Biology

Various ways/techniques suggested for control of water pollution are as follows:

1. Pollutants (radio active, chemical, biological) present in water bodies can be removed by appropriate methods such as adsorption, electro dialysis, ion exchanged, reverse osmosis etc.

2. By using coagulants such as alum, sodium aluminate fine suspended particles, proteins and other materials can be removed.

3. In sewage treatment plants, water pollutants are removed by physical, biological & chemical methods.

                 In the first step the larger and suspended particles are removed by sedimentation and filtration.

                 In the second step bacterial decomposition of organic matter is done by supplying air in oxidation bonds.

                 In the third step chemical oxidation of waste is done by strong oxidizing agents such as chlorine gas, perchlrate  salts, ozone gas  and U.V. radiation.

4. Excessive use of fertilizers and pesticide should be avoided and as far as possible less stable pesticides should be used.

5. Oil spills in water can be cleaned with the help of bregoli a byproduct of paper industry resembling saw dust.

6. Education and awareness programme must be launched.

7. The laws of pollution must be implemented strictly.

 

 

Posted Date: 7/11/2012 4:36:26 AM | Location : United States







Related Discussions:- Prevention and control of water pollution, Assignment Help, Ask Question on Prevention and control of water pollution, Get Answer, Expert's Help, Prevention and control of water pollution Discussions

Write discussion on Prevention and control of water pollution
Your posts are moderated
Related Questions
Digestion of Nucleic Acids Several nucleases present  in  the  pancreatic juice  like RNAase and  DNAase  digest various nucleic acids- These enzymes  are endonucleases which h

Explain the Solid-Liquid Equilibria? A freezing-point curve (freezing point as a function of liquid composition) and a solubility curve (composition of a solution in equilibriu

Medical Research - Conservation of Wildlife  Many animal species are used to test drugs and vaccines and to increase our understanding of human health and disease. The nine-b

EVIDENCES OF EVOLUTION - The evidences of organic evolution derived from many lines of study indicate that present day forms have arisen by gradual changes from pre existing fo

Senescence - Effects of Plant Growth Regulators on Development All five major growth regulator groups: auxins, gibberellins cytokinins, abscisic acid and ethylene can influenc

Q. Are nematodes triploblastic or diploblastic animals? Just like platyhelminthes, nematodes are triploblastics that is they present three germ layers (ectoderm, endoderm and m

What is polygenic inheritance? How does it work?  The Polygenic inheritance, also called as quantitative inheritance, is the gene interaction in which a given trait is conditio

How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates? The neurula stage is divi

Q. What do you understand by Cyanogenic glycosides? Cyanogenic glycosides are present in a number of food plants and seeds. Cassava is a staple dietary item in tropical Afri

Explain the Severe Burns - Clinical Therapeutic Nutrition? Severe, life-threatening bums require immediate care. Dehydration is treated with large amounts of fluids given intra