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w&e technologies

Aqualogy Water & Energy Technologies is a multidisciplinary department consisting of more than 250 professionals, with references in over 15 countries around the world. Its activity is focussed on the design and development of projects and the implementation of advanced solutions for the optimisation of complete water cycle processes. Its main lines of action are:

  • Wastewater treatment (urban and industrial)
  • Sludge and biomass
  • Distribution and drainage networks
  • Basin management
  • Hydrogeology
  • Energy
  • Control and automation system

Aqualogy W&E Technologies offers a global service that covers everything from the study and design of the solution to its implementation, commissioning and maintenance. Its portfolio consists of over 80 services and solutions that adapt to the customer’s needs in both the urban and industrial field, and always with innovation as our benchmark.

Of particular note are patented technologies such as electrochemistry for water treatment, low-temperature sludge drying and cleaning and maintenance of CO2 wells, as well as sophisticated decision support systems for asset management or optimised, real-time management of drinking water supply networks. Projects related to energy efficiency are also a benchmark, as they propose solutions that not only permit precise monitoring of energy costs, but also savings in consumption and controlled demand. And all this without forgetting the more traditional engineering projects, such as master plans or the design of water infrastructures, where a wide variety of references are a guarantee of our work.

Aqualogy W&E Technologies offers a global, professional and technologically innovative service.

SLUDGE AND BIOMASS: Continuous thermal sludge hydrolysis (Aqualysis)

One of the current challenges in wastewater treatment is to increase sustainability through energy self-sufficiency: having a treatment plant that is capable of producing, on site, all the energy necessary for its operation.

Aqualysis continuous thermal hydrolysis technology generates more energy because it produces more methane in the anaerobic digestion process. It also generates less end waste, thanks to better degradation in the anaerobic digestion and dewatering phase. Aqualysis is notable for its fully continuous operation, the direct heat transfers and the exclusively designed flash system, for greater compactness and efficiency. A higher degree of reliability is also achieved, as bigger loads can be digested, freeing space in the digester and accelerating the process. It is a firm commitment to zero waste.

SLUDGE AND BIOMASS: Drying of sludge and biomass

Aqualogy develops high-quality technological drying solutions, combined with energy-efficient measures and respect for the environment, thanks to in-house technology based on the application of solutions for the use of residual energy and heat pumps.

Its low-temperature dryer reduces the volume of sludge, both industrial and urban, from wastewater treatment plants and various industrial processes, as well as various types of biomass, facilitating the use of various types of residual energy. The end product can be used for agricultural purposes or as an alternative fuel.


Aqualogy has the capacity to carry out detailed analyses and studies of sites, draft and execute projects and operate and maintain facilities in the field of renewable energies. This solution includes photovoltaic solar energy, mini-hydraulic and pico-turbine projects by means of apt systems®, developed by Aqualogy.


Monitoring variables and obtaining characteristic and efficiency ratios for wells (taking into account the aquifer, hydraulic performance of the drilling and electromechanical performance of the propulsion equipment) permit the optimisation of water extraction costs and improved guarantees of supply.

Drilling audits are a means of establishing the condition and efficiency of each of the catchment elements and options for improvement by adjusting the flow, development/descaling of the well and/or modifying propulsion equipment and facilities. AQUA GARD™ is a system preventing efficiency and quality loss, which uses liquid CO2 and does not require the electric pump to be uninstalled.

HYDROGEOLOGY: Hydrogeological consultancy

Hydrogeological studies are the tool that enables groundwater resources to be characterised and quantified. Techniques applied include hydrogeological cartography, geophysics, hydrogeochemistry, drill diagraphy, control network monitoring, demand assessment and flow and pollutant transport modelling.

Their results are directly applicable to defining borehole and beach well sites, assessing renewable resources and reserves, decontaminating groundwater, carrying out artificial recharge and the drainage of excavations and mines, among others.


Aqualogy undertakes the complete works for wells and boreholes for water catchment. The drilling is carried out using the most appropriate system for each type of rock, diameter and depth of the works.

Developments, cleaning and pumping gauging/tests are also performed using high-power equipment, and the pumping equipment, power supply and surface civil engineering work are designed, supplied and installed. The Aqua Freed® system is used for the development and descaling of wells using liquid CO2, which is appropriate for drinking water facilities, is environmentally compatible (no acid water generated) and has a greater radius of action than conventional systems.


Planning studies and operation diagnoses of drinking water networks. Raising and modelling of supply networks. Stock-taking of assets and hydraulic infrastructure and their implementation in GIS.

The Water Master Plan is a consulting service that facilitates:

• Acquiring thorough, accurate knowledge of the water distribution network.

• Conducting a diagnosis of current and future operations.

• Performing a comprehensive service diagnosis (including hydraulic operation, water quality, resource availability, physical condition of facilities and networks, and so forth).

• Optimising actions to be carried out on the network to guarantee their correct operation, based on a comprehensive diagnosis.

• Establishing the principles for improving network efficiency.



The purpose of water planning is to plan all the actions required to guarantee that the entire demand for water is met and ensure the good condition and protection of bodies of water, thereby guaranteeing balanced and harmonious regional development. These solutions include drawing up hydrological plans for basins, demand studies, water resource studies, planning of surface water bodies, water resource inventories and alternative water resource use plans.


Studies and projects aimed at improving performance of drinking water networks through adaptation of optimum network pressures and sectorisation design to improve leak detection and permit the control of minimum night-time flows. The purpose of these projects is to reduce non-revenue water (NRW) and thus improve the drinking water distribution service and optimise investment to improve the economic performance.


Consultancy and engineering work for the management, maintenance and updating of information on water infrastructures. It permits the assessment and diagnosis of the state of drinking water supply networks. Management systems for decision making on network renewal and rehabilitation, thus enabling prioritisation of network renewal requirements, including investment cost analysis and subsequent optimisation.


Services ranging from consultancy to the operation, remote control and maintenance of reservoirs and dams:

  • Pre-feasibility, feasibility, building and operation of reservoirs and dams
  • Studies and projects for the preparation of reservoirs and their facilities, implementation of emergency plans, etc.
  • Maintenance and conservation
  • Safety studies and initial revision
  • Classification proposals
  • Operating regulations and emergency plans
  • Annual auscultation reports
  • Commissioning and water release plans


The area of water treatment offers a wide range of different technologies to provide solutions to our customers’ problems.

These technologies can be divided into two groups: those aimed at maximum treatment efficiency and those focusing on cost optimisation.

High-efficiency technologies:

  • Electrocoagulation, electrooxidation, electroperoxicoagulation and electro-Fenton
  • Anaerobic wastewater treatment (UASB and AnMBR)
  • Advanced treatment process for the elimination of emerging pollutants (Sempac)
  • Advanced process for the treatment of urban wastewater (anaerobic technology, MBR)
  • Electrolysis technology, Greensafer biocide

Low-cost technologies:

  • Biodisc-based biological systems for water that can be assimilated to urban water
  • Green filter-based secondary and tertiary treatments
  • THM desorption in drinking water
  • Nitrate removal from water using electrochemical techniques
  • Low-impact eutrophication prevention systems


This solution offers technical assistance and consultancy for the optimisation and control of water treatment processes, such as:

  • Technical assistance in ultrafiltration membrane and reverse osmosis systems, with the use of specific software and dedicated lab equipment.
  • Pilot plants for different technologies, such as electrochemical, biological or membrane.


Automation and remote control systems are a key tool for improving the operating efficiency of all processes related to the complete water cycle and the environment.

We help our complete water cycle and environment customers to optimize the operational, economic and environmental management of their facilities through automation and remote control.

We cover all phases of the project, from initial consultancy and advice to supply, installation and commissioning, including after-sales services.



We help our customers to implement instrumentation equipment in order to monitor and control their complete water cycle processes. We provide solutions at both an individual level (instrumentation equipment) and as part of a system (quality or remote control stations to monitor and control complete water cycle facilities).

We are present in all the phases of the process, from initial consultancy and advice to design and final rollout.
We implement a wide variety of equipment, and among those for the complete water cycle, the following stand out:

  • Measurement of quantity
    • Flow, volume, level, pressure, energy consumption
  • Measurement of quality
    • Chlorine, dosing systems
    • Turbidity, conductivity, pH, temperature, nitrates, ammonium, etc., with multi-parametric analysis
  • Other