We are specialists in the design, construction, operation & maintenance of all types of water and wastewater treatment plants. Cadagua S.A. was founded in 1971 and accounts for 40 years of experience. Cadagua is a pioneer and a leader in the national market of engineering and construction of water and wastewater treatment facilities. We are also a highly reputed company in the world market of Seawater Reverse Osmosis Desalination Plants.
With 440 employees and a turnover in 2009 of 150 million Euros, Cadagua is a clear reference in the development of water treatment and desalination plants. We have designed and built more than 200 water treatment installations (sewage, drinking and desalination), and we have reached a total treatment capacity of over 14,500,000 m3/d. With regards to Operation & Maintenance contracts the number of population equivalent is beyond 17,000,000.
These figures place Cadagua at the head of the Spanish companies in this field. Since 1985, Cadagua belongs to Ferrovial - one of the world's leading infrastructure companies, with operations in 15 countries, 70,000 employees and 48,200 millon Euros in assets.
Sludge Digestion and Energy Recovery
One concern modern society has is protection of the environment. Reduction in energy consumption, preservation of the sources of raw materials and the waste reduction are main factors to ensure this.Waste produced must be stabilised and made inert and, if possible, must be turned into the object of clean technology development by reuse or recycling.The stabilisation methods now used vary according to the technical and economic conditioning factors, ...
Desalination is a process that separates most of the salts dissolved in a saline solution. There are several different techniques used to this aim, however the most extended one is Reverse Osmosis desalination. High pressure water is pumped through semi-permeable membranes that separate water and salts. The energetic efficiency in the desalination process has developed significantly in the last years rendering Reverser Osmosis the best ...