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Canal de Isabel II allocates 12.2 million to the treatment of 70,000 tons of sludge at the Loeches plant - Canal de Isabel II allocates 12.2 million to the treatment of 70,000 tons of sludge at the Loeches plant

null Canal de Isabel II allocates 12.2 million to the treatment of 70,000 tons of sludge at the Loeches plant

Canal de Isabel II allocates 12.2 million to the treatment of 70,000 tons of sludge at the Loeches plant

2019-09-22

The contract will run for the next three years, with an option for an additional year’s extension


  • Of these, 55,000 are being treated in thermal drying facilities and 15,000 are turned into compost for agriculture and gardens.
  • This is part of the priority for environmental quality and energy efficiency in its Strategic Plan.

Canal de Isabel II will allocate a total of €12.2 million for indirect management of the operation and maintenance of the Loeches composting and thermal drying plant with cogeneration. The operation will run over three years with the option for an additional year’s extension.

These facilities treat an annual average of 70,000 tons of sludge from Canal’s wastewater treatment plants. Of these, 55,000 are treated in thermal drying, and 15,000 are mixed with tree prunings and composted to finally produce 13,000 tons of dry granules and 5,000 tons of compost respectively, products used in agriculture, gardening and landscape recovery.

The thermal drying process uses heat from electrical cogeneration to reduce the sludge volume from an initial dryness of around 21% to a final dryness of 90 %. This produces a sanitised final product in the form of dry sludge granules which can be used as fertilizer for agriculture or as fuel in some industrial processes.

As well as thermal energy for drying, the cogeneration plants have the capacity to produce up to 158,400 MWh/year of electricity for self-supply, and the excess energy generated can be sold back to the national grid.

ENVIRONMENTAL QUALITY AND ENERGY EFFICIENCY
The activity at the Loeches plant is part of the environmental quality and energy efficiency priority in Canal de Isabel II’s Strategic Plan. The actions planned for this priority include the Clean Generation-Zero Kilowatts Plan, which aims to achieve 100 % self-consumption with renewable energies.

Canal de Isabel II was founded almost 170 years ago to supply water to the city of Madrid and today it employs over 2800 people who work every day to serve more than 6 million people in the region. It is an innovative publicly owned company, a leader in its sector and recognised worldwide for its management of the integrated water cycle.

It operates 13 reservoirs; 78 groundwater catchments; 17,601 km of water supply and distribution network; 131 drinking water and 133 wastewater pumping stations; 15,083 km of sewage networks; 65 storm tanks; 157 wastewater treatment plants; and 615 km of reclaimed water network.

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