General Our project includes the followings: The aim of the project The aim of the project A map of the study area A map of the study area An introduction.

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Presentation transcript:

General Our project includes the followings: The aim of the project The aim of the project A map of the study area A map of the study area An introduction to the Saronikos Bay area An introduction to the Saronikos Bay area We will talk about the parameters that we took to analyze the sea water samples We will talk about the parameters that we took to analyze the sea water samples The methods that we followed The methods that we followed A table with the results A table with the results A discussion & comparison A discussion & comparison Suggestions to find solutions for the pollution in Saronikos bay and Elefsina Suggestions to find solutions for the pollution in Saronikos bay and Elefsina References References

SEA WATER POLLUTION Poorer water quality means water pollution.

The map of Saronikos bay The map of Saronikos bay

What is water pollution? Water pollution can be defined in many ways: One or more substances that cause problems for animals or people. One or more substances that cause problems for animals or people. Aquatic areas can naturally remove a certain amount of pollution by dispersing it harmlessly. Aquatic areas can naturally remove a certain amount of pollution by dispersing it harmlessly.

How do we know when water is polluted? The main way is to take samples of water and measure the concentrations of different chemicals that it contains. If the chemicals are dangerous or the concentrations are too great, we can regard the water as polluted. Measurements like this are known as chemical indicators of water quality.

Saronikos Bay & Elefsina Saronikos Bay & Elefsina The marine pollution in both Saronikos Bay and Elefsina has been reduced since biological treatment of industrial waste has taken place (Psitalia Sewage Plant). The marine pollution in both Saronikos Bay and Elefsina has been reduced since biological treatment of industrial waste has taken place (Psitalia Sewage Plant). However, measurements showed that there are still some chemical substances which disrupt the normal life of sea creatures. However, measurements showed that there are still some chemical substances which disrupt the normal life of sea creatures.

Some important elements for this area Surface:2600 km Surface:2600 km Maximum depth:450 m Maximum depth:450 m Water circulation: Anticyclonal Water circulation: Anticyclonal Reasons of pollution: Reasons of pollution: Turning-point: Turning-point:

Our activity We collected samples of sea water from two areas in Attica, one residential (Loutropyrgos) and one industrial (Aspropyrgos ) and we analyzed them to see their content in inorganic salts, chlorophyll, suspended matter, nitrites (NO - ) and dissolved oxygen. We collected samples of sea water from two areas in Attica, one residential (Loutropyrgos) and one industrial (Aspropyrgos ) and we analyzed them to see their content in inorganic salts, chlorophyll, suspended matter, nitrites (NO 2 - ) and dissolved oxygen.

Methodology 1)Nitrites (NO - ) spectrophoter method 1)Nitrites (NO 2 - ) spectrophoter method a) Addition of substance A b) Addition of substance B 2)Suspended matter sample of 1L a) Drying b) Remove of the water c) Retention of the suspended matter 3)Chlorophyll spectrophoter method ( sample of 2L) a) Addition of acetone 4)Dissolved oxygen

Results: Station name Particulate matter (mg/l) Dissolved oxygen (mg/l) Nitrites (μg/l) Chlorophyll a (μg/l) Loutropirgos Aspropirgos

Pollution effects Pollution effects Pollution that is caused by sewage and agricultural outflow could lead to eutrophication, which is the exponential increase of phytoplankton. In certain areas this phenomenon leads to the development of “dead zones” where the oxygen which originates from the sea falls to such low levels that it can not support life. Pollution that is caused by sewage and agricultural outflow could lead to eutrophication, which is the exponential increase of phytoplankton. In certain areas this phenomenon leads to the development of “dead zones” where the oxygen which originates from the sea falls to such low levels that it can not support life.

Suggestions There are a few possible ways of improving this alarming situation, such as: There are a few possible ways of improving this alarming situation, such as: Biological treatment of sewage Biological treatment of sewage Biological treatment of industrial waste Biological treatment of industrial waste Use of biological fertilizers Use of biological fertilizers Implementation of safety measures for sea transports Implementation of safety measures for sea transports

References