Water recycling: methods for effective water reuse

31 January 2024

Importance of water recycling

Water recycling has become a critical practice in water management and environmental protection. With the urgent need to adopt more sustainable approaches to water use, recycling is becoming a key process in ensuring the resilience of our water resources.

The process of water recycling requires the adoption of a variety of coordinated measures and the joint efforts of public authorities, industries and communities. Despite the inclusion of this issue in several directives and policies at the European level, such as the Urban Waste Water Directive (Directive 98/15/EC), significant challenges remain. Among them, the lack of standardization and recognition at the national level is a major obstacle to the effective implementation of these directives.

Water Reuse: benefits and applications

Although water reuse and recycling systems require an initial investment of time to design and installation, they prove their effectiveness over the long term, often more than 25 years, and contribute significantly to water conservation. Wastewater treatment and reuse are essential to ensuring an adequate supply of clean water for all, and offer numerous benefits, including:


  • Conservation of water resources: reuse maximizes the efficiency of water use by reducing the dependence on fresh water sources. This helps conserve our planet's limited water resources.
  • Reduced operating costs: the use of treated water within businesses and communities can significantly reduce the costs associated with water supply over the long term. This is particularly beneficial for industries where water is essential to the production process.


Water reuse applications are diverse and include:

  • Irrigation: by using rainwater harvesting or phytoremediation systems, water can be reused to irrigate parks, gardens and farmland. This approach helps meet agricultural needs without depleting freshwater resources.
  • Industrial cooling: many industries require large amounts of water to cool machinery and processes. Reusing treated water reduces the environmental impact of such operations.
  • Non-potable domestic use: greywater recovery allows this resource to be reused for non-potable domestic uses such as washing cars, watering gardens, cleaning surfaces and flushing toilets. This contributes significantly to the reduction of potable water consumption for less essential uses.
  • Aquifer recharge: in some regions, treated water can be injected into aquifers to recharge groundwater resources. This practice helps maintain hydrogeological balance.

IDRO Group's innovations in water recycling

In the search for increasingly efficient water recycling solutions, IDRO Group has developed a number of advanced technologies. These include reverse osmosis systems, advanced membrane treatment and biological reactors. In addition, IDRO Group has developed increasingly sophisticated and efficient plants.


A notable example is the compact Idro Reuse plants, specifically designed for industrial water reuse. These tertiary treatment modules, manufactured in containers that can be easily transported both by land and by sea, are easy to install. They are the ideal solution for the industrial sector, especially for industries with high water consumption, such as the textile industry.


Another recent innovation in the field of water treatment is Elektroplan, an experimental plant for the purification of civil water. This system uses state-of-the-art technologies such as induction electroflotation and electrochemical oxidation. Elektroplan is an innovative and highly efficient chemical-physical method specifically designed to remove pollutants from wastewater by non-biological processes.



IDRO Group stands out in the industry for its commitment to designing and implementing sustainable solutions for energy production and environmental protection. For more information on water recovery and recycling systems, please contact IDRO Group!

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