Hof/Ho Chi Minh. They are about 14 metres tall, weigh 20,000 kilograms each and pump 1,850 litres of water per second. 1,000 kilowatts motors provide the necessary power and ensure that the pressure remains constant at 4 bar. The giant vertical turbine machines are among the largest pumps ever produced by the Dortmund-based Wilo Group in Europe. They constitute the heart of the Hoa Puh pumping station which ensures the water supply of the country’s economic centre right from the centre of metropolitan Ho Chi Minh City.
The conurbation currently counts some ten million inhabitants, a number which is projected to increase to more than 13 million by 2025. In times of increasing urbanisation and diminishing resources, water purification plays an increasingly important role. The Hoa Phu pumping station in the middle of Ho Chi Minh City pumps raw water to a water purification plant where it undergoes clean water treatment for drinking water supply. In order to meet the increasing demand for water, a significant increase in the current capacity of the pumping station of 300,000 m³ of water per day is required. In addition, the existing pump technology at the Hoa Puh pumping station is obsolete and inefficient. The consequence: high operating costs and increased CO2 emissions.
Going forward, the two Wilo vertical turbine pumps will ensure efficiency and sustainability in the city’s water supply. The two giants have now been tested on Wilo’s own test bench in Hof. Considering the high performance of the pumps, this was a great challenge. The operation of such machines requires 1,000 kilowatts of power, which is why the pumps had to be tested on a Saturday and with special permission – and under the scrutiny of a top-level Vietnamese delegation. The testing was done on the weekend in order to prevent the power grid in the neighbourhood from collapsing under the increased power consumption.