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Water softening

Updated on 04/12/2018
Définition
Sens commun
It is a technique to remove minerals that cause water hardness, especially calcium and magnesium.
Source
according to IOWater
Sens technique
A technique consisting in exchanging the calcium and magnesium ions, which are not very soluble and which react with the carbonates of water to form limestone, with the sodium ions which are perfectly soluble in water. This operation is named "ion exchange".
Source
According to UAE

Water aeration

Updated on 06/09/2018
Définition
Sens commun
Bringing water and air in close contact to remove all dissolved gases (especially those responsible for bad odours) from water and introducing oxygen to oxidise certain compounds such as iron and manganese to prevent corrosion).
Source
according to WHO

Water corrosivity

Updated on 06/09/2018
Définition
Sens commun
Qualifies water which can dissolve scale and limestone. Corrosive water contributes to the corrosion of metallic pipes and equipment. It can cause the dissolution of metals (nickel, iron, copper, lead, cadmium...) and in this case induce health risks.
Source
according to the Alsace Regional Health Agency (ARS)

Bactericide

Updated on 06/09/2018
Définition
Sens commun
Substance, or property of a substance, that destroys bacteria. Some disinfectants and antibiotics are bactericidal.
Source
according to Wikipedia

Nitrogen cycle

Updated on 25/02/2019
Définition
Sens commun

All of the processes and conversions of nitrogen, into different forms, in the atmosphere, the lithosphere, the hydrosphere and the biosphere (nitrous oxide, nitrate, nitrite, ammonia, organic nitrogen).

Source
according to the Ministry of Environment

Carbon cycle

Updated on 04/12/2018
Définition
Sens commun
Movement of carbon, in its various forms, between the natural reservoirs of the planet.
Source
according to AFB
Sens technique
Circulation and storage of carbon, in its various forms, between the Earth surface and interior, the atmosphere and biosphere. The main mechanisms of carbon exchange are photosynthesis, respiration and oxidation. A transfer takes place between living organisms, the atmosphere, the earth and water.
Source
according to FAO and IOWater

Phosphorus cycle

Updated on 06/09/2018
Définition
Sens commun
All exchanges and transformations of phosphorus in the different components of the environment. Unlike many other biogeochemical cycles, the phosphorus cycle has no impact on the atmosphere.
Source
According to Wikipedia and Lenntech

Sulphur cycle

Updated on 06/09/2018
Définition
Sens commun
All exchanges and transformations of sulphur in the different components of the environment.
Source
According to Wikipedia

Decarbonatation

Updated on 06/09/2018
Définition
Sens technique
Removal of some calcium and magnesium from water to achieve a compromise between the proper mineral balance of water and the optimum level of hardness.
Source
according to IFREMER and the General Council of Seine-et-Marn

Aquifer decontamination

Updated on 06/09/2018
Définition
Sens commun
Action to remove pollution from groundwater. Water decontamination can use different approaches (physical, chemical or biological), in situ (directly underground) or ex situ (water pumping, treatment and reinjection).
Source
according to the University of Picardy

Iron removal

Updated on 06/09/2018
Définition
Sens technique
Action to remove iron or its derivatives from a liquid.
Source
according to Wikipedia

Defluorination

Updated on 06/09/2018
Définition
Sens commun
Removal of the surplus of fluorine from water, to reach a concentration that does not expose anyone to dental or bone health risks.
Source
according to the Belgian Development Agency

Demineralisation

Updated on 06/09/2018
Définition
Sens commun
Action to remove minerals and salts from water to produce demineralised water.
Source
according to Lenntech

Nitrate removal

Updated on 06/09/2018
Définition
Sens technique
Action to remove nitrates by filtration through an ion exchange resin.
Source
according to the General Council of Seine-et-Marne

Water desalination

Updated on 06/09/2018
Définition
Sens commun
Process used to obtain freshwater from brackish or salt water.
Source
according to Wikipedia

Brackish water

Updated on 06/09/2018
Définition
Sens commun
Water that has less salts than seawater.
Source
according to UNESCO

Fungicide

Updated on 06/09/2018
Définition
Sens commun
Pesticide used to control, repel or destroy fungi.
Source
according to Lenntech

Herbicide / weed killer

Updated on 06/09/2018
Définition
Sens commun
Pesticide used to control, repel or destroy unwanted plants.
Source
according to Wikipedia

Approved laboratory

Updated on 06/09/2018
Définition
Sens commun
Laboratory authorised by the Ministry in charge of the field in which it is competent. For example, the Ministry of Health approves laboratories carrying out analyses on the quality of water intended for human consumption (excluding natural mineral waters), swimming and bathing water (bathing with full amenities and other bathing). Another example is the Ministry of the Environment, which approves laboratories carrying out analyses in the field of water and aquatic environments under the Environment Code.
Source
according to the Ministry of Health and the Ministry of the Environment

Mineral matter

Updated on 06/09/2018
Définition
Sens commun
Non-organic matter made of solid components.
Source
according to Wikipedia

Organic matter

Updated on 06/09/2018
Définition
Sens commun
Matter generated by living beings (plants, animals, mushrooms and other decomposers including micro-organisms).
Source
according to Wikipedia

Metrology

Updated on 06/09/2018
Définition
Sens commun
Science that measures parameters with sensors. Metrology measures, for example, the speed of marine currents or the chemistry of water.
Source
according to IFREMER

Water neutralisation

Updated on 06/09/2018
Définition
Sens commun
Process to reduce the pH of water (by acidification or alkalisation) to a value determined according to the needs.
Source
according to ADEME

Sampling point

Updated on 06/09/2018
Définition
Sens commun
Place of collection of water samples for analysis.
Source
according to AFB

Water salinity

Updated on 06/09/2018
Définition
Sens commun
Amount of salts dissolved in water.
Source
according to Wikipedia