The Bogotá River is one of the largest in Cundinamarca, a region in the centre of Colombia which surrounds the country’s sprawling capital city. It spans 380 kilometres in length, beginning in the Guacheneque páramo and flowing into the Magdalena River. Around nine million people live in its basin.
However, a lack of sewage infrastructure beginning upstream has meant the river has become more and more polluted, a situation which has recently been made worse by the growth in population, agriculture and industry. That is why, for some time, the city of Bogotá has been searching for a solution to this environmental issue, considered to be one of the most important in recent years.
As an engineering company, Ayesa is involved in the project to clean the river. As such, last year it was awarded the supervision contract for the Canoas Lift Station, a megastructure for pumping water and a key part of the clean-up of the river. This solution will raise residential wastewater to ground level, allowing it to be conveyed by means of gravity.
The contract involves supervising, monitoring, reviewing, validating, verifying and approving the execution of the studies and designs, the construction of the Canoas Wastewater Lift Station and additional construction work, including commissioning and assisting with operations.
The station will be located in Soacha, on the same section as the new WWTP, and will pump 36.200 litres of water per second, enough to fill an Olympic-size swimming pool every minute. The lift station will receive 70% of the city’s wastewater. The new structure will pump water from the 70-metre-deep well to the WWTP, where it will be treated before running into the Muña reservoir and Bogotá River.
This project will bring major environmental benefits, due to the fact that the station will mean less wastewater running into the Tunjuelo, Fucha and Soacha rivers, thus improving the quality of water and air, as well as the conditions for fauna, in the entire area surrounding the Bogotá River. It will also ensure the necessary flow rate is achieved to generate energy.
Specifically, once the extension to the Salitre WWTP in the north is completed and the Canoas WWTP in the south is built, 800 tonnes of pollutant waste will cease to run into the river each day.
The Canoas Wastewater Lift Station will receive wastewater from the Tunjuelo Canoas Interceptor (TCI) and will be made up of two adjacent circular wells, joined in a tangential manner.