Pumping Mexico City’s wastewater out of the city

03.07.2002

At the end of July this year, 20 Flygt heavy duty submersible propeller pumps will go into operation in the Grand Canal and the Rio Hondo River as part of Mexico City’s improved wastewater pumping system. The total value for the order, which consists of pumps, discharge columns, spare parts and onsite verification tests, is over USD 3.5 million.

Since Mexico City’s wastewater canals were built, the water table has dropped, and they have sunk in parts of the city. As a part of the project to improve the system, Dirección General de Construcción y Operation Hydráulica, DGCOH, have constructed two new pump stations that will lift the water up to a level where the water can flow freely downstream. Twenty high voltage Flygt submersible pumps will be used to pump the water.

Fourteen 300 kW pumps, with a total capacity of 40m³/sec, will operate at the largest station, which is located on the Grand Canal that runs north east through the city. As well as much of the Mexico City’s wastewater, most of the storm water, 95 percent of which falls between April and October, flows down the Canal. Six 480 kW pumps, with a combined capacity of 20 m3/sec, will be in operation at a smaller station on the Rio Hondo River, which flows north west through the city.

The order worth a total of over USD 3.5 million also includes discharge columns, spare parts and special tools, training of service engineers, installation, and comprehensive verification onsite testing.

The pump stations should be fully operational by the end of July.

Source: Xylem Inc.

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