Ever since its inception, the R+D+i department of Cadagua has carried out a large number of R+D+i project of many different sizes, from major investments in mid and long term R+D+i projects to small innovative activities in conjunction with the production line. Financing has been both internal and external, regardless of the aim of the projects.

Some of the most representative projects of Cadagua that have been completed or are still underway can be seen below:

Management of the information from the water plants is carried out independently and manually, and is supplied by plant managers to the company departments that ask for it. Cadagua has developed a platform that centralises and groups data from different sources and at the same time incorporates, unifies and compares data from different plants. This project, called Ferroaqua, enables gains to be made in efficiency, cost savings and market differentiation.

The main aim is to provide the most efficient management of the plants, that respects the environment and has a major capacity to respond to different situations, as well as making a system available that not only reinforces the position of leadership occupied by Cadagua in the sector but that also consolidates it as a leading edge technology provider.

The Ferroaqua platform is currently running at three water treatment plants: Desalination Plant of Valdelentisco, WWTP of San Pedro del Pinatar and WWTP of San Javier, the first of which is owned by acuaMed and the other two by ESAMUR.


Waste Water sludge solar DRYing FOR energy recovery through gasification GAS

Waste Water sludge solar DRYing FOR energy recovery through gasification GAS

DRY4GAS proposes the study of a environmentally sustainable technological solution solution for treating and managing sludge generated in a WWTP. The solution shall include a solar drying system, gasification treatment and an Organic Rankine Cycle (ORC), as an energy harnessing process (production of electricity and heat). It shall provide an alternative to traditional agricultural valorization of sewage, by assessing the quality and effect on the soil of the pre-treated sludge, dried and amended with gasification ashes.


System of UF membranes for eliminating bacteria resistant to antibiotics and emerging contaminants

This project is part of the strategic line of increasing the technological offer available for the treatment of water intended for human consumption. And in particular to the development of processes focused on the elimination of emerging contaminants and bacteria resistant to antibiotics. This action is part of the priority objectives of Cadagua’s Strategic Plan, with reference to R&D&I activities.

The MEMBACE project uses Ultrafiltration membranes associated with advanced oxidation processes and adsorption in Active Carbon as an effective system for the elimination of biological contamination, organic matter and suspended matter present in water. Its objective is to ensure supply from unconventional sources and the treatability of contaminants for which conventional drinking water treatment plants are not designed or adapted.

This project has been the object of aid co-financed by the Basque Government and the European Union through the European Regional Development Fund 2014-2020 (FEDER)


Research project in collaboration with the Massachusetts Institute of Technology MIT to apply HTC Hydrothermal Carbonation processes in sewage sludge. The objective of the project is to use HTC technology to upgrade the different sludges generated in a municipal WWTP. Generate products with high added value as additives for asphalt or activated carbon. The project includes the development of a computational atomistic model as a process simulation tool.


Research project to determine the treatability of the Nervión river water through the combination of conventional and advanced processes. The objectives of the project are to obtain drinking water according to the legislation RD 140/2003, to determine the most appropriate process line to meet this objective, and to confront the pilot plant with different scenarios of raw water quality. Likewise, the presence and treatability of emerging contaminants and the presence of antibiotics resistant microorganisms are being studied. The pilot plant consists of a wide range of possible processes among which we highlight; dosages of chlorine dioxide, chlorine gas, potassium permanganate, coagulation / flocculation, ozonation with or without peroxide, UV lamps and active carbon, both powder and granular.

Main Line Deamonification Process

In this project we are developing the partial nitritation-anamox technology for nitrogen removal in the main line of a municipal WWTP following an AnMBR. This technology is more developed and implemented for the treatment of anaerobic digestion returns, highly loaded and of warmer temperatures, however it is a challenge still unresolved in the main line and would entail significant energy savings. Different options of retention of the biomasses, both nitrifying bacteria and ammonia oxidizing bacteria will be tested and the process control will be deeply study