logo cadagua
Projects That Add Value to Society
Learn about our key projects in highways, airports and construction, all which aim to deliver sustainable and innovative solutions.
International Experience
Drinking water treatment plant in Wieliszew (Filters)
- Estación de tratamiento de aguas potables
Same description as C3U and C4T. Unify
Wastewater treatment plant in Villapérez
- Estación de depuración de aguas residuales
The Villaperez WWTP is part of the sanitation system for the Nora River Basin in the Central Area of Asturias, and it treats discharges from Oviedo, Siero, Noreña, and Llanera. Some of the construction carried out by Cadagua in 1998 was pioneering in Spain, as the plant design incorporated a design for an advanced, versatile, biological removal process for nitrogen and phosphorus, along with energy recovery and thermal drying of digested sludge.
Industrial wastewater treatment plant at Smurfit-Kappa Mengibar
- Industrial wastewater purification station
Smurfit-Kappa entrusted Cadagua to expand treatment capacity, changing out an old UASB anaerobic reaction for a modern IC, including an associated line of biogas (gasometer and torch).
Wastewater treatment plant in Tamaraceite and Tenoya
- Estación de depuración de aguas residuales
Thanks to this new infrastructure with MBR technology, the city council of las Palmas de Gran Canaria intends to improve management of the complete cycle of water in the municipality, mitigate bad odors from the current WWTP and, and meet the objective of zero discharge of pretreated waters into the sea. At the same time, this will mean significant savings in water for irrigation in the city.
Wastewater treatment plant in Sant Feliu de Llobregat
- Estación de depuración de aguas residuales
This significant expansion gave the WWTP a nutrient elimination system that reduces the risk of eutrophication for the Llobregat River and the waterfront. Likewise, tertiary treatment by means of ultraviolet and filtration technology was installed in order to reuse part of the water and thereby increase efficiency in managing the zone’s water cycle.
Wastewater treatment plant in Butarque
- Estación de depuración de aguas residuales
- Secado Térmico
It treats 110,000 T/year of wet sludge (20%MS) generated by the WWTPs in the metropolitan region of Madrid through a process of thermal drying until reaching dryness of 90% MS. The dried sludge is used as fertilizer for agricultural purposes. The plant generates 18 MW of electricity that is exported to the grid.
Wastewater treatment plant in Ronda
- Estación de depuración de aguas residuales
Since it was inaugurated in 2008, the Ronda WWTP has been a turning point in the conservation of the Guadalevín River’s natural habitat. One especially notable feature is the recovery from the stretch between the city of Ronda and the village of La Indiana. Otters and several species of fish have returned to live in parts of the river that were previously uninhabited because of contamination.
Industrial wastewater treatment plant at SAICA – 1
- Industrial wastewater purification station
Since its first intervention in 1992, SAICA has continually relied on Cadagua to carry out 9 capacity expansions at its plants, providing the same as 7 Biopaq IC reactors, with a total capacity of 315,000 Kg DQO each day and biogas washing for 600 Kg of sulfur daily.
Wastewater treatment plant in Rincón de León
- Estación de depuración de aguas residuales
Since 2006, the Rincón de Leon treatment plant has had an advanced, complete tertiary treatment system that enables up to 30 cubic hectometers of treated wastewater to be reused per year. The water is used to supply the irrigation network for farms in l’Alcanti and Medio Vinalopó. The treatment combines physical-chemical systems, continuous sand filtration, ultrafiltration by means of submerged hollow fiber membranes, reverse osmosis, and ultraviolet light. It is undoubtedly one of the most important highlights in reuse designed, built, and operated by Cadagua.
Industrial wastewater treatment plant at Anaerobic Reactor – Saica 2-3-4
- Industrial wastewater purification station
Since its first intervention in 1992, SAICA has continually relied on Cadagua to carry out 9 capacity expansions at its plants, providing the same as 7 Biopaq IC reactors, with a total capacity of 315,000 Kg DQO each day and biogas washing for 600 Kg of sulfur daily.
Wastewater treatment plant in Ribadesella
- Estación de depuración de aguas residuales
The Ribadesella WWTP is designed to treat an average flow of 7,560 m³/day in peak seasons, and 3,960 m³/d in low seasons. It has a prolonged biological oxidation process aerated by turbines with a maximum treatment capacity of 11,520 m³/day. The treated water goes through an ultraviolet disinfection system before being discharged into the river.
Industrial wastewater treatment plant in Nufri
- Industrial wastewater purification station
Expansions to the existing treatment capacity (SBR) including 2 Biopaq IC anaerobic reactors in later projects.
Drinking water treatment plant at the Bolueta Pilot Plant
- Estación de tratamiento de aguas potables
The Bolueta Pilot Plant is an ambitious research project led by the Consorcio de Aguas for Bilbao Bizkaia. Cadagua is designing, building, and will operate this infrastructure under BIM (Building Information Modeling) philosophy. Among its technological goals, the plant will analyze the future behavior of Venta Alta’s WTC in the purification of Emerging Contaminants.
Drinking water treatment plant in Pilones
- Estación de tratamiento de aguas potables
This treatment plant is located in Arroyo de los Pilones, in the Santa Rosalía area, behind the Andalusia Technology Park, along with the dam of the same name. The water stored in the dam is a guaranteed raw water supply for the city since, from there, we could maintain the supply to the municipality of Málaga for 12 days. A unique feature of this WTC is the radial layout of its 20 pressure sand filters that ensure production of 2,000 L/s.
Drinking water treatment plant at On Stevens
- Estación de tratamiento de aguas potables
This involves remodeling and new construction of a pump room for the potable water supply for the residents of Corpus Christi. The work involves remodeling the existing pumps as well as their drawing. In addition to the pumps, a new well pump is being built and installed.
Wastewater treatment plant in Monte Orgegia
- Estación de depuración de aguas residuales
The Monte Orgegia WWTP, with a flow of 60,000 m3/day, has been treating wastewater from Alicante, El Campello, Mutxamel, and Sant Joan d’Alacant for over a decade. This major facility was designed and built by Cadagua and has all the usual purification processes, including nutrient removal, tertiary treatment by filtration, and ultraviolet disinfection and anaerobic stabilization of sludge.
Seawater desalination plant in Jorf Lasfar
- Instalación desaladora de agua de mar
Design and Construction of a seawater desalination plant for the OCP (Office Cherifien des Phosphates), a world leader in the market for phosphates and their derivatives. To combat the difficult conditions of seawater, the desalinization plant incorporates advanced pretreatment including Dissolved Air Flotation and Ultrafiltration. Cadagua took on this ambitious contract as a sole contractor under the turnkey ready mode.
Wastewater treatment plant in Melilla
- Estación de depuración de aguas residuales
- Secado Térmico
Cadagua has over 13 notable projects related to Thermal Sludge Drying purification systems. The thermal drying of the treatment plant in Ciudad Autónoma de Melilla has technology with a low-temperature range and an evaporation capacity of 565 kg of water an hour. The objective of this facility is complementary drying of slurry generated at the treatment plant in order to reach an average drying level greater than the necessary minimum of 50% so that it can be used for energy at the city’s Incineration Plant.
Wastewater treatment plant in Jelenia Gora – Miejska Oczyszczalnia Scieków
- Estación de depuración de aguas residuales
Design and expansion of the WWTP at Jelenia Góra, located in the south of Poland next to the Karkonosze National Park. This construction expanded the plant’s treatment capacity to 25,000 m3/d, gave it greater flexibility, and improved the guarantees for the water treated and deodorizing of the facility by means of building the second biological treatment line.
Drinking water treatment plant in Jelenia Gora
- Estación de tratamiento de aguas potables
The Jelenia Góra WTC is Cadagua’s first construction project in Poland, located in the south of the country, near the Karkonosze National Park. What makes this plant unique is the high quality of the raw water coming into the facility, which, though it has physical-chemical processes, operates without adding any reagents.
Seawater desalination plant in Melilla
- Instalación desaladora de agua de mar
The Seawater Desalinization Plant in Melilla was designed and built by Cadagua under a concessional contract that included 12 years of Operation and Maintenance. The water production capacity of the desalinization plant is 7,100,000 m3 per year, and it is used for the potable water supply for Ciudad Autónoma. It is the main supply resource for the city, making up over 60% of the entire water supply. It has open intake through an underwater outfall, pretreatment based on a two-phase sand filtration stage, and cartridge filtration prior to the osmosis stretchers with energy recovery by means of Pelton turbines.
Wastewater treatment plant in Marismas del Odiel
- Estación de depuración de aguas residuales
The Punta Umbría WWTP in Huelva serves the approximately 142,000 residents of the municipalities of Punta Umbría, Aljaraque, and El Rompido. It represents an environmental improvement in an area of great ecological value, as are the Marismas del Odiel. It incorporates tertiary treatment, which enables reusing the water in public gardening, agricultural irrigation, and golf courses in the area.
Wastewater treatment plant in Janowek – Wroclaw
- Estación de depuración de aguas residuales
Expansion and remodeling of the Wrocław WWTP, a noteworthy construction project in 2 significant ways: ENVIRONMENTAL IMPROVEMENT: this has largely contributed to halting the environmental wear of the Odra River, and thus the Baltic Sea, by obtaining treated water of a higher quality with more restrictive guarantees. In addition, the plant has considerably increased its efficiency by means of co-generation installed based on the plant’s biogas, which covers up to 70% of the demand for electrical energy for its operation. A WORK OF GREAT IMPORTANCE: the magnitude of the construction is translated into figures and results. Figures: Six (6) digesters that are 25 m tall with a unit volume of 6,500 m3 or 48.7 million m3 of concrete used during the construction work. Results: The Wrocław Sewage Treatment Plant won the 10th annual “Lower Silesia Construction of the Year” in the category of “Engineering Construction” in 2013, as well as the “2012 Building of the Year” award in the category for “wastewater treatment.”
ETAP International Paper
- Industrial wastewater purification station
Expansion of the capacity of the aerobic purification system with MBBR technology and clarification with DAF flotation by using anaerobic Biopaq IC technology, and transformation of the MBBR into conventional activated sludge with secondary decantation. The biogas created is cleaned and conditioned to be burned in boilers.
Industrial wastewater treatment plant at Mahou-San Miguel Alovera
- Industrial wastewater purification station
Modernization of existing anaerobic treatment systems, adding a Biopaq IC, dismantling two old UASBs to turn them into a backup tank.
Seawater desalination plant in Madinat Yanbu Al-Sinaiyah
- Instalación desaladora de agua de mar
Cadagua’s first project in the Middle East (the Red Sea) for an industrial Client in a petrochemical complex with high technical and operational requirements.
Wastewater treatment plant at the Lyna (Olsztyn) Sludge Drying and Incineration Plant
- Estación de depuración de aguas residuales
- Secado Térmico
Design and execution of the Sludge Drying and Incineration Plant at the Olsztyn WWTP. The Plant, which was designed and built to treat 12,000 T/year, is one of the first facilities in Poland that strictly incinerates sludge coming from a purification system. The thermal processes applied reduce the sludge by up to ten times its original weight.
Wastewater treatment plant in Lloret
- Estación de depuración de aguas residuales
Wastewater treatment plant in Lledoner
- Estación de depuración de aguas residuales
Wastewater treatment plant in La Poveda
- Estación de depuración de aguas residuales
This important work on the Isabel II Canal will enable doubling the capacity of the plant’s daily treatment. Operations originally began in 1991 with a capacity of 13,000 m3/day. Once completed, the WWTP has come to purify 21,500 m3 per day.
Wastewater treatment plant in Hostalric
- Estación de depuración de aguas residuales
Drinking water treatment plant at Hogenakkal
- Estación de tratamiento de aguas potables
Located in a remote and environmental sensitive place in Tamil Nadu, south India. The project provides drinking water to almost 3 million inhabitants in a rural area. It incorporates flat bottom clarifiers to deal with variable raw water quality depending on the monsoon season. The project includes the river water abstraction, 11 km pipeline, 3 pumping stations and 3 water reservoirs.
Industrial wastewater treatment plant at Heineken – Madrid
- Industrial wastewater purification station
After various interventions carried out by Cadagua, the plant consists of anaerobic treatment by means of Biopaq IC and aerobic biological treatment with biological elimination of nitrogen and phosphorus, discharging the water into waterways.
Industrial wastewater treatment plant at Cobega (Coca Cola) Montornes-Martorel
- Estación de depuración de aguas residuales industriales
Purification system for discharge into waterways consisting of anaerobic treatment by means of Biopaq IC and aerobic treatment by means of activated sludge.
Industrial wastewater treatment plant at Cobega – Tacoronte
- Estación de depuración de aguas residuales industriales
After the successful completion of a project at their plant in Barcelona, Cobega entrusted Cadagua with the design, construction, start-up, and subsequent operation of this plant on the island of Tenerife.
Industrial wastewater treatment plant at Font Salem S.A. – El Puig
- Estación de depuración de aguas residuales
Biological biogas washing generated in a Biopaq IC reactor to be used in factory boilers.
Wastewater treatment plant in Galindo
- Estación de depuración de aguas residuales
The Galindo wastewater treatment plant located in Sestao is undoubtedly the Consorcio de Aguas de Bilbao-Bizkaia outstanding example of work in sanitation. Cadagua played a vital role in some of the most important phases of its growth and evolution. Highlights include the design and completion of the complex, versatile secondary treatment system, including the rectangular secondary clarifiers, as well as the execution of one of its sludge incinerators. This WWTP now treats 350,000 m3 of wastewater daily, and it is an essential infrastructure in the process of regeneration of the Estuary of Bilbao.
Industrial wastewater treatment plant in García Carrión Daimiel
- Industrial wastewater purification station
Transformation of an aerobic purification system by means of SBR for an anaerobic one by means of Biopaq IC, reducing operation costs. The biogas generated represents a saving of approximately 30% of the natural gas used up and manufacturing.
Industrial wastewater treatment plant at García Carrión S.A.(citrus fruits from Andévalo)
- Estación de depuración de aguas residuales industriales
Transformation of an MBR aerobic purification system into an anaerobic one using Biopaq IC, reducing operation costs. The biogas generated represents a savings of approximately 30% of the natural gas used up in manufacturing.
Wastewater treatment plant in Guadalajara
- Estación de depuración de aguas residuales
The Guadalajara WWTP was designed and built by Cadagua, and it not only complies with European Directive requirements on municipal wastewater treatment, but it also allows for improved performance in removing nutrients with biological methods in accordance with the Hydrological Program Tajo Basin requirements, which is even more restrictive in this regard than European legislation. Since the plant was inaugurated, the environmental quality of the Henares River has notably improved, thereby helping social and economic development with respect to the environment.
Seawater desalination plant in Granadilla
- Instalación desaladora de agua de mar
The new seawater desalinization plant in Granadilla de Abona serves a population of 56,000 people and will increase irrigation resources for agriculture in the region. In its first phase, it is generating 14,000 m³ per day, which can expand up to 21,000. This desalinization plant includes seawater collection be means of 6 wells near the coast 63 meters deep, a deposit of product water, a pumping station, piping, and drawing and transporting the product water to the 10,000-cubic-meter hub warehouse.
Wastewater treatment plant for Thermal Sludge Drying and Biogas Management at Cos
- Estación de depuración de aguas residuales
The Thermal Drying and Biogas Management facility at the COŚ WWTP was one of Cadagua’s first projects in Poland. The thermal drying system consists of three independent drying lines (2+1R), with an evaporation capacity of 3,050 kg/h of water. The end product, granules with a high energetic value that are hygienically safe, are for reuse at the plant in different capacities, such as fuel.
Industrial wastewater treatment plant in Estrella de Galicia
- Estación de depuración de aguas residuales industriales
Compact purification system for discharge into sewer pipes, treating 3,000 m3/day on a plot of just under 600 m2. As it is integrated in the urban hub, it includes complete treatment for odors to eliminate any sort of environmental impact. It includes biological biogas washing, Thiopaq.
Drinking water treatment plant in El Andévalo Occidental
- Estación de tratamiento de aguas potables
The Andévalo Occidental WTC has substantial improvement in the quality and quantity of hydraulic resources from the Andévalo region. Located in the areas around la Puebla de Guzman, it enables treating 750 m3 of water per hour from the Andévalo reservoir.
Industrial wastewater treatment plant in Font Salem (Salem)
- Estación de depuración de aguas residuales industriales
Changing the anaerobic UASB reactor our for a Biopaq IC. In a later intervention, biological biogas washing, Thiopaq, was incorporated.
Wastewater treatment plant in Crispijana
- Estación de depuración de aguas residuales
The Crispijana WWTP treats wastewater from Vitoria-Gasteiz. Since its inauguration in 1984, it has been continually updated and expanded. In 1998, Cadagua took over designing and building the secondary treatment system with nutrient removal.
Wastewater treatment plant at Copero II
- Estación de depuración de aguas residuales
The Copera Treatment Plant has a current capacity of 255,000 m3/day and purifies wastewater from the southern basin of Seville, the town of Dos Hermanas, and the La Isla industrial complex. The primary treatment dates back to 1987 and 1993. Cadagua took over the design and construction of biological treatment and the secondary clarifier in the year 2000.
Seawater desalination plant at Dhekelia I & II
- Estación de depuración de aguas residuales
The first large Ocean Water Desalinization Facility on the island of Cyprus, built in two phases in the record time of 18 months (Phase I) under a BOT scheme. Over time, it was remodeled to introduce new technologies, reducing operation costs, and expanded in capacity to 60 MLDs.
Industrial wastewater treatment plant in Cervezas Estrella de Levante – Espinardo
- Estación de depuración de aguas residuales industriales
Compact purification system for discharge into sewer pipes, treating 2,400 m3/day. It has biological biogas washing generated for use in microturbines by means of Thiopaq technology.
Wastewater treatment plant in Arroyo Culebro
- Estación de depuración de aguas residuales
Given its size and the sorts of processes it uses, the Arroyo Culebro Cuenca Media Alta WWTP is one of Cadagua’s most significant projects. Located in the Manzanares river basin in the municipality of Pinto, it treats wastewater from Parla and Fuenlabrada. It can treat up to 129,600 m3/d and produce 30,240 m3/d of regenerated water for use in irrigating parks and gardens. Its outstanding two-stage biological treatment with biological removal of nitrogen and phosphorus, its 4 secondary clarifiers 50 meters in diameter, and energy recovery of biogas produced by anaerobic digestion to supply a good part of the energy needed at the WWTP.
Wastewater treatment plant in Antofagasta
- Estación de depuración de aguas residuales
It provides services to some 130,000 residents of the city of Antofagasta. One of the first WWTPs in LATAM with biological treatment of activated sludge.
Wastewater treatment plant in Albufera Sur
- Estación de depuración de aguas residuales
The Albufera WWTP in the La Ribera Baixa Region serves the municipalities of Alginet, Almussafes, Benifaió, and Sollana. This major treatment plant is a vital part of maintaining the Albufera’s good ecological conditions, and it has been in operation for over 10 years, treating wastewater by using a complete process that includes the removal of N and P nutrients, final water disinfection, and anaerobic stabilization of the sludge and energy recovery of biogas to minimize the plant’s energy consumption.
Seawater desalination plant in Lanzarote
- Instalación desaladora de agua de mar
Industrial wastewater treatment plant in Cobega
- Estación de depuración de aguas residuales industriales
Drinking water treatment plant in Yalde
- Estación de tratamiento de aguas potables
Wastewater treatment plant in Vila-seca and Salou
- Estación de depuración de aguas residuales
Wastewater treatment plant in Mancomunada
- Estación de depuración de aguas residuales
Wastewater treatment plant in Sant Joan
- Estación de depuración de aguas residuales
Wastewater treatment plant in Sant Pau de Segúries
- Estación de depuración de aguas residuales
Wastewater treatment plant in Can Fornaca
- Estación de depuración de aguas residuales
Wastewater treatment plant in Valle la Orotava
- Estación de depuración de aguas residuales
Wastewater treatment plant in Castellví de Rosanes
- Estación de depuración de aguas residuales
Wastewater treatment plant in Riells
- Estación de depuración de aguas residuales
Wastewater treatment plant in Rubí
- Estación de depuración de aguas residuales
Wastewater treatment plant in Can Bossa
- Estación de depuración de aguas residuales
Wastewater treatment plant in Vilaller
- Estación de depuración de aguas residuales
Wastewater treatment plant in El Pont de Suert
- Estación de depuración de aguas residuales
Wastewater treatment plant in Cala Tarida
- Estación de depuración de aguas residuales
Wastewater treatment plant in Sant Joan de Labritja
- Estación de depuración de aguas residuales
Wastewater treatment plant in Viseu Sul
- Estación de depuración de aguas residuales
Wastewater treatment plant in Utebo
- Estación de depuración de aguas residuales
