Eutrophication, Science

Eutrophication:

Materials such as sewage or organic wastes from milk plants, canneries, slaughter houses, paper mills, starch factories and fish processing plants, and runoff from agricultural lands greatly increase the productivity of waters and cause algae to grow in abundance, so that sometimes water surface gets entirely covered by  algae. This is called 'algal bloom'.  In general, the entire water body becomes a green nourishing soup. Eventually, the death of this algae promotes the growth of a very large  'decomposer'  population.

The decomposers break down the dead algae using a lot of oxygen present  in  the water.  In addition, the living algae also consume oxygen from water at night for  their respiration. The decomposers, and the algae cause decreased amounts of oxygen available to fishes, ultimately causing them to die. The problem of eutrophication or excessive nourishment leading to loss of life in water bodies mainly occurs in ponds and lakes and not in flowing water. Now the question arises what is the solution to  this problem? One solution  is to process the sewage thoroughly, to remove nutrients to prevent 'algal bloom'.  Since such a treatment is expensive, further  ways are being explored. One suggestion is to use this water to  irrigate crops and/ or to grow algae and aquatic plants  in a man made shallow pond which can be used for making biogas.  

Posted Date: 9/28/2012 6:09:20 AM | Location : United States







Related Discussions:- Eutrophication, Assignment Help, Ask Question on Eutrophication, Get Answer, Expert's Help, Eutrophication Discussions

Write discussion on Eutrophication
Your posts are moderated
Related Questions
what are conventional plant breeding and non-conventional plant breeding methods . what are their impacts in the future crop/plant production

what do you mean by diffraction of light

Which is NOT true about the concentration of methane gas in the atmosphere: It is generated as a byproduct of refrigerants and aerosols


TO SHOW THAT AIR HAS WEIGHT Drive a thin nail by the exact centre of a long rod such as a metre stick or a yard stick. Balance the stick by resting the nail on the rims of two

Explain Increased Cardiac Output i)  An increase in blood volume increases the venous return and leads to an increased stroke volume. The increase in the blood volume may be d

Temperature affects the _____ of sound waves !?

The active ingredient in Antabuse, a drug used for the treatment of chronic alcoholism, is tetraethylthiuram disulfide, C10H20N2S4 (fw = 296.54). The sulfur in a 0.4329 g. sample o


CHEMICAL HAZARDS : Chemicals are present in all laboratories. It is good to consider all chemicals toxic and flammable unless one has definite information regarding its nature. Ou