Colombia is a country located in northwestern South America with a population of over 48 million. Its capital and largest city is Bogota. Medellin is Colombia's second largest city, located in the Aburra Valley bisected by the Medellin River. The Medellin River flows through Medellin and its metropolitan area, draining the Aburra Valley. In the 1960s, the river became severely polluted due to untreated sewage and industrial waste being dumped directly into it. Projects are now underway to build new wastewater treatment plants, including expanding the existing San Fernando plant, to treat sewage and reduce pollution in the river. The goal is to clean the river so it can support

1. International
project
Sebastián Arboleda
Camilo Jaramillo

2. Colombia
Colombia, officially the Republic of Colombia, is
an American country located in the northwestern
part of South America, organized as a unitary
republic constitutionally descentralizada8 with its
capital in Bogotá. Its area is 2,129,748 km ² of
which 1,141,748 km ² correspond to the mainland
and the remaining 988 000 km ² to its maritime
extension, 9 which maintains a border dispute with
Venezuela. Its GDP PPP also ranked fourth in Latin
America and number 28 worldwide. Colombian
Nominal GDP is the fourth largest in Latin America
and is ranked 30 worldwide

3. Medellìn
Medellin is a Colombian city, capital of the
department of Antioquia. It is located in the
center of the Aburrá Valley, which is
bisected by the Medellín River, one of the
many valleys of the Andes where also
located eight municipalities, forming the
Metropolitan Area. With a population of
2,393,011 inhabitants in 2012 is the second
most populous city in Colombia, after
Bogotá.

4. Medellín

5. The Medellín River
The Medellín River or river Aburrá is a Colombian River
which flows through the city of Medellín and its
metropolitan area. Born to 3100 meters above sea
level (altitude) at the high of San Miguel, in the
municipality of Caldas, South of the Aburrá
Valley, and 100 kilometers later, already with the
name of Rio Porce, pours its waters into the river
Nechi.
Drains the Aburrá Valley in the Central Cordillera of
the Andes and bathes ten municipalities: Caldas, La
Estrella, Itagüí, Sabaneta, Envigado, Medellin, Bello, C
opacabana, Girardota and Barbosa, which make up
the Metropolitan Area of the Aburrá Valley.

6. Pollution of the river.
The first manifestations of the contamination
of the Aburrá Valley were initially at 60 that
are located in the more densely populated
of Medellin and creeks that flow into the
river without treatment. The presence of
these ravines made for the community
always it easy to dispose of their waste
liquid and solid often.
It is produced by the San Fernando
plant of the public companies from
organic chemist.

7. Processes to purify it
all the sewage from homes and industries
are carried by interceptors, large pipes
placed along the Medellin River, arriving to
San Fernando, where they are treated by
different processes until you have 80% less
pollution. This is what is called a plant for
secondary treatment that remove the SST
and reduce the BOD.

8. San Fernando plant
San Fernando Plant is located in the
Municipality of Itaguí in Medellin
limits, being a neighbor of the Central
Wholesale Food. Receives wastewater from
residences, industry and trade
Itaguí, Envigado, Sabaneta, La Estrella, part
of the municipality of San Antonio de
Prado, later also receive Caldas Township.

9. San Fernando plant

10. Projects to stop river pollution
EPM, continuing the "Sanitation Program Medellin
River and its tributaries" plans to build a new plant for
wastewater treatment for municipalities Bello and
Medellín.
The plant will be three times greater than San
Fernando, but will have the same secondary
treatment process. It is planned to start construction
in 2010 and has a budget of 336 million dollars.
San Fernando, and the other three plants to be
built, one in Bello, another in Barbosa and another in
Girardota, contribute to the dream that we all see
the River Antioquia Medellin
transparent, clean, odor-free and even aquatic life.

12. Thanks
Of Manuel Mejía Vallejo
For Britihs Cousin
Teacher
Walter Agudelo
Camilo Jaramillo