L'EUROPE SE JETTE Á L'EAUL'EUROPE SE JETTE Á L'EAU

ANDREA GARCÍA MATOSANDREA GARCÍA MATOSSELENA HÉRNANDEZ ARAÑASELENA HÉRNANDEZ ARAÑA

3ºA3ºA

· · WATER POLLUTIONWATER POLLUTION

· · NATURAL SOURCES OF POLLUTIONNATURAL SOURCES OF POLLUTION

· · SOURCES OF HUMAN POLLUTIONSOURCES OF HUMAN POLLUTION

· · KINDS OF POLLUTINGKINDS OF POLLUTING

· · EFFECTS OF WATER POLLUTIONEFFECTS OF WATER POLLUTION

· · HEALTH DAMAGEHEALTH DAMAGE

· · ALTERNATIVES FOR THE PREVENTIONALTERNATIVES FOR THE PREVENTIONAND CONTROLAND CONTROL

● It's a modification of the water, generally caused by humans, whoIt's a modification of the water, generally caused by humans, whomakes it unsuitable or dangerous for human consumption,makes it unsuitable or dangerous for human consumption,industry, agriculture, fisheries, recreation, animals, nature andindustry, agriculture, fisheries, recreation, animals, nature andeveryday life. everyday life.

● This contamination can comes from natural sources such asThis contamination can comes from natural sources such asvolcanic ash, but the biggest part comes from human activities.volcanic ash, but the biggest part comes from human activities.

● Some sources of water pollution are natural. For example,mercury in the Earth's crust and the oceans produce pollution ofnatural way of these.

● The sources are very dispersed and don't cause highconcentrations of pollution, except in some very specific places.The man-made pollution is more dangerous than the natural.

● Natural factors can't be easily controlled and can have asignificant impact on the quality of a water source. The factorsare, for example, the weather, fires, geology and microbiologyand nutrient growth.

They are divided into isolated and not isolated. They are divided into isolated and not isolated.

·IsolatedIsolated: Those pollution sources are characterized by single or: Those pollution sources are characterized by single ordiscrete unloading, in which contaminants are flushed from a onlydiscrete unloading, in which contaminants are flushed from a onlyor confined geographical area. Are for example the unloading ofor confined geographical area. Are for example the unloading ofdomestic effluents, industrial effluents, spillages, etc.domestic effluents, industrial effluents, spillages, etc.

··Not isolated:Not isolated: Include diffuse sources of pollution and activities Include diffuse sources of pollution and activitiesthat cover a larger area, causing widespread groundwaterthat cover a larger area, causing widespread groundwatercontamination, that's why are harder to control than the isolated.contamination, that's why are harder to control than the isolated.They are the originated from agriculture, urban drainage, etc.They are the originated from agriculture, urban drainage, etc.

● Organic wastesOrganic wastes:: Set of organic waste created by humans, Set of organic waste created by humans,livestock, etc. When these wastes are in excess, the bacteriallivestock, etc. When these wastes are in excess, the bacterialproliferation depletes oxygen and makes it can't live living beingsproliferation depletes oxygen and makes it can't live living beingsthat need oxygen.that need oxygen.

● Inorganic Chemicals:Inorganic Chemicals: They're salts and toxic metals such as They're salts and toxic metals such asmercury, lead and acids. They cause serious damages to livingmercury, lead and acids. They cause serious damages to livingbeings, reducing the agricultural yields and corroding thebeings, reducing the agricultural yields and corroding theequipment used to operate the water.equipment used to operate the water.

● Organic compounds:Organic compounds: Organic molecules, like oil and Organic molecules, like oil anddetergents end up in the water and are, in many cases, longdetergents end up in the water and are, in many cases, longperiods because they're products made by man with molecularperiods because they're products made by man with molecularstructures difficult to degraded by microorganisms.structures difficult to degraded by microorganisms.

● Sediments and suspended materials:Sediments and suspended materials: Particles pulled outs Particles pulled outsfrom the ground and dragged into the water, along with materialsfrom the ground and dragged into the water, along with materialsin suspension, are the major source of water pollution. Thein suspension, are the major source of water pollution. Theturbidity that produce them, makes the life difficult of organisms,turbidity that produce them, makes the life difficult of organisms,and the accumulated sediment destroy spawning sites, filled lakesand the accumulated sediment destroy spawning sites, filled lakesor swamps, etc.or swamps, etc.

● Radioactive substancesRadioactive substances:: Soluble radioactive isotopes can be Soluble radioactive isotopes can bein the water and sometimes they accumulate along food chains,in the water and sometimes they accumulate along food chains,reaching higher concentrations in some living tissues than theyreaching higher concentrations in some living tissues than theyhad in the water. had in the water.

● PathogensPathogens:: Kinds of bacteria, viruses and protozoa transmitted Kinds of bacteria, viruses and protozoa transmitteddiseases like cholera and typhoid. In LDC's the diseasesdiseases like cholera and typhoid. In LDC's the diseasesproducing by these are one of the reasons of death. Theseproducing by these are one of the reasons of death. Thesemicrobes entering the water in the feces and other organic debrismicrobes entering the water in the feces and other organic debrisproduced by infected people.produced by infected people.

● Effects caused by suspended solidsEffects caused by suspended solids: These absorb solar: These absorb solarradiation and reduce the photosynthetic activity of aquaticradiation and reduce the photosynthetic activity of aquaticvegetation, obstruct the channels, etc.vegetation, obstruct the channels, etc.

● Phenols induced effectsPhenols induced effects: T: The fish, especially fatty fish like thehe fish, especially fatty fish like thetrout, accumulated them. Chlorination plants also give rise totrout, accumulated them. Chlorination plants also give rise tophenols chlorine, which gives the water an unpleasant taste.phenols chlorine, which gives the water an unpleasant taste.

● Heat-induced effects:Heat-induced effects: The main effect is the reduction of The main effect is the reduction ofdissolved oxygen. And it can affect directly on aquatic animals. Ifdissolved oxygen. And it can affect directly on aquatic animals. Ifthe temperature increase, also increase the speed of biologicalthe temperature increase, also increase the speed of biologicalreaction and the solubility of some compounds.reaction and the solubility of some compounds.

● Effects caused by organic matter:Effects caused by organic matter: Its effects are different Its effects are differentdepending on whether is biodegradable organic matterdepending on whether is biodegradable organic matter(decreased dissolved oxygen) or is non-biodegradable (reduces(decreased dissolved oxygen) or is non-biodegradable (reducesself-purification capacity of a river).self-purification capacity of a river).

● It is known that water pollution is a main source of illness;It is known that water pollution is a main source of illness;caused by bacteria transmitted by drinking water, used forcaused by bacteria transmitted by drinking water, used forvarious activities in the home. According to the Worldvarious activities in the home. According to the WorldHealth Organization, 80% of infectious diseases are due toHealth Organization, 80% of infectious diseases are due tocontaminated water.contaminated water.

• Development and adaptation of methods of analysis for theDevelopment and adaptation of methods of analysis for thedetermination of diseases that cannot be isolated by conventionaldetermination of diseases that cannot be isolated by conventionalmethods.methods.

• • Monitoring quality of water supply sources in poor communities.Monitoring quality of water supply sources in poor communities.

• • Use of solar energy for water disinfection in small communities.Use of solar energy for water disinfection in small communities.

• • Design and evaluation of a treatment system to abate arsenicDesign and evaluation of a treatment system to abate arsenicexposure in economically disadvantaged colonies.exposure in economically disadvantaged colonies.

LINKS TO VIDEOS ABOUT WATER LINKS TO VIDEOS ABOUT WATER POLLUTION IN ENGLISH, FRENCH AND POLLUTION IN ENGLISH, FRENCH AND

SPANISHSPANISH

● https://www.youtube.com/watch?v=L06GU2R-84U● https://www.youtube.com/watch?v=GDKcd1e5uWs● https://www.youtube.com/watch?v=QU5gZKeMSKE● https://www.youtube.com/watch?v=IG3thzNUIdY● https://www.youtube.com/watch?v=Hn60WB4BZEs