Best wastewater Treatment ideas 2012

Best wastewater Treatment ideas 2012  Filtration Types The most common type of filtration in water treatment is ''normal/dead end''filtration where all In fluent passes through a filter medium that removes contaminants to produce higher quality water Rough screens, sand filters multimedia filters and cartridge filters are examples of filtration products that operate this way to remove 0.1 micron particles or larger. Once the medium becomes The method of obtaining clean filtration medium is based on economic and disposal concerns minimizing contammant buildup leaving it free to reject incoming material and to allow free flow of purified water. 

Although membrane cleaning is melodically required, the self-clean mg nature of crossflow filtration lengthens membrane life enough to make it economically attractive.

Examples of ecological succession

Ecological succession is the gradual process by which ecosystems change and develop over a peperiod  of time. In the process of succession, the species present in an area will gradually change. Succession takes place because of the changes in the environmental conditions in a particular place over a period of time Each species is adapted to thrive and compete best against other species under a very specific set of environmental conditions If these conditions change, then the existing species will be replaced by a new set of species which are better adapted to the new condemns.

Ecological succession may also occur when the conditions of an environment suddenly and drastically change. A forest fare. Wind storm and human activities like agriculture all greatly alter the conditions of an Environment.  dominance among the species still present Observed changes in the structure and function of communities in the intermediate stages of ecological succession generally result from natural selection of individuals within their current environment. Three mechanisms by which species may replace each other have been proposed the relative Importance of each depends on the nature of the community and stage of development The following are the three proposed hypothesis pertaining to the mechanism of replacement.

Global warming Effect on Human Society

Effects of Global warming Effects on Human Society: The Global Warming produces the intense heat during summer. 

This excess heat is fatal for human beings. In Western Europe the record breaking heat wave combined with drought is responsible for death of 14800 people in France,4200 in Italy, 1400 in Netherlands, 1300 in Portugal, 900 in U. K. 100 in Spain during July-August 2003.The Global warming melts the polar ice caps. The big cities near to ocean shore may be engulfed by oceans. The lakes streams and aquifers could shrinks or dry up due to temperature increase and cause the severe water scarcity in urban centers.

How to build a small greenhouse and Small greenhouse Plan

Energy from the sun drives the earth's weather and climate and heats the earth surface while after some amount of energy radiates back into space. The atmospheric gases like water vapour carbon dioxide etc. trap some outgoing heat, this works as like glass panels of a green house. That's why this atmospheric phenomena known for Greenhouse Effects and the heat absorption gases called as Greenhouse gases.

Since the beginning of the industrial revolution atmospheric concentration of carbon dioxide have increased nearly 30%, methane concentration doubled while nitro us oxide concentration risen about 11 trio tones of organic carbon have been 15%. Nearly 1.5 x 10 me mined and consumed in the form of coal, oil and natural gas. The carbon-dioxide is a largest single waste proud of modem society.

The four tones of carbon dioxide is released each year by average Person Fossil fuels burned to run cars and trucks, heat homes and businesses and power factories responsible for about 98% of U. S. carbon-dioxide emissions, 24,% methane emissions and 18% nitrous oxide emissions In 1997 the United States emits about one-fifth of total global green house gases.

The Green House effect :