Water is a vital resource for humans, not only for its consumption, but also for all kinds of industrial processes and production of goods. Our activity changes its natural state and contaminates it, causing serious environmental damage to rivers and seas and excludes its use for activities such as agriculture. This is why we must ensure the correct treatment of the water so that it can be reused and returned to the environment.

    This is the Water Treatment Process
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    Wastewater treatment consists of a series of physical, chemical and biological processes that eliminate pollutants from water so that humans can make use of it.

    The purification of waste water from towns and cities or industries is undertaken in a Waste Water Treatment Plant (WWTP).

    In the WWTP, purification processes are performed (like those that occur naturally in the river basin) in a concentrated and automated way.




    Wastewater treatment stages:

    Below you will find an explanation for each of the different water treatment processes. Each process has a specific objective according to the purification stage. It is important to note that the composition of the water, circumstances and end use or destination may require variations on conventional water treatments.

    PRE-TREATMENT

    PRE-TREATMENT

    Pre-treatment is common to all water treatments, whether it is wastewater treatment, drinking water purification or desalination, and its aim is to avoid large fragments such as branches causing breakdowns in the water treatment plant.

    PRIMARY TREATMENT

    PRIMARY TREATMENT

    Primary treatment serves to eliminate floating and suspended solids, sand, fats and oils.

    SECONDARY TREATMENT

    SECONDARY TREATMENT

    Secondary treatment generally comprises different types of biological treatment of water, the general aim of which, as we have seen, is to eliminate organic material.

    TERTIARY TREATMENT

    TERTIARY TREATMENT

    Tertiary treatment focuses on eliminating pathogens, although it also succeeds in reducing suspended solids and waste organic material. This type of wastewater treatment is highly recommended where water needs to be reused for watering public gardens or farming, without causing any risk to human health.


    WHAT DOES ACCIONA DO IN THE AREA OF WATER TREATMENT?

    ACCIONA works to guarantee people’s access to water, from capture to purification or desalination, clean-up and return to the environment.

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    ACCIONA undertakes the management of end-to-end services which involve all the stages involved in water treatment: readying it for human consumption, supplying it to the population, then cleaning up urban and industrial waste water. The company also takes care of invoicing end users.

    Find out more about what ACCIONA does in the area of water treatment

       


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