Collection and treatment of waste-water (sanitation)

In recent years, many local authorities have significantly modernised their water treatment tools, principally with the aim of reducing the ecological footprint of their sanitation service.

On the one hand, urban zones are confronted with rampant soil sealing and with increasingly intense pollution of the water to be treated (both in terms of the nature of the pollution and its levels). In contrast, zones of lower density suffer from limited access to an effective and reasonably priced sanitation service (on-site sanitation solutions are not always more effective and purification initiatives involving purification stations which use activated sludge are prohibitively expensive beneath a certain population threshold).

A modern sanitation service must have the capacity to:

  • Treat emerging micro-pollutants (in particular medical residues) in order to prevent harmful impacts on aquatic fauna (antimicrobial resistance, change of sex, etc.) and further consider the secondary uses of treated water, such as the re-use of treated water for watering public spaces or for certain industrial uses
  • Control the flows of rainwater by encouraging private individuals to opt for infiltration into the plot of land through the use of rainwater collection systems and/or fiscal tools such as a tax on urban rainwater
  • Permanently guarantee the quality of sensitive collection environments, such as coastline or river areas, through real-time management of hydraulic flows based on the capacities of the collection and treatment facilities
  • Accord on-site sanitation the importance it deservesby investing in modern facilities and treatment systems whose effectiveness will be guaranteed both by monitoring and by overarching renovation operations

Offer Espelia

In this sector, Espelia deploys its full operational expertise. More specifically, the firm supports local authorities in:

  • analysing the functioning of existing services;

  • improving the efficiency of services: contracting, creating public or public/private operators, monitoring and optimisation of the running of facilities, introducing a rainwater tax.

    Directeur Pôle Eau et Milieux Aquatiques
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