Canal allocates 6.86 million to sludge management at its purification and treatment facilities

null Canal allocates 6.86 million to sludge management at its purification and treatment facilities

Canal allocates 6.86 million to sludge management at its purification and treatment facilities


The state-owned company aims to recover 100 % of the by-products of its integrated water cycle management processes

  • The company will be responsible for transporting and recovering one million tonnes of sludge in the next 4 years

  • These products are used in agriculture, thermal drying facilities or for composting 

The Governing Council of the Region of Madrid was informed today about Canal de Isabel II’s proposal to award tranches I, II, IV and V of the contract for the management of sludge from sewage treatment plants and water treatment plants in Canal de Isabel II. The contract has an initial term of four years, may be extended for a further year, and has been awarded for the sum of 6,856,667.67 euros. Said proposal must be approved by the Board of Directors of the state-owned company.

Sludge is waste from the wastewater purification and drinking water treatment processes, and consists of organic matter and water. 

This contract covers the management of about 200,000 tonnes of sewage sludge per year from 77 facilities and about 30,000 tonnes of sludge from 13 drinking water treatment stations. Managing this product involves collecting it and transporting it for use in agriculture, or for thermal drying or composting.

Specifically, sewage sludge is waste generated in great volumes in the integrated water cycle. The wastewater treatment process generates sludge with high organic matter and nutrient content. Canal applies advanced sanitation and drying treatments to them to obtain products that are valuable in agriculture, thus contributing to the circular economy.

Thus, these actions must be seen in the context of promoting environmental quality and energy efficiency as per the state-owned company’s Strategic Plan. Thus, as part of its plan to promote the circular economy, Canal is seeking to manage and exploit the all by-products from the processes, and to implement mass sanitation of WWTP sludge for agricultural use.

Canal de Isabel II was founded almost 170 years ago to supply water to the city of Madrid and today it employs more than 2,800 employees work every day to serve more than 6 million people in the region. It is an innovative company, a leader in its sector and recognized 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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