Degrémont is a company specializing in the production of
drinking water
Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as drinking water. The amount of drinking water required to maintain good health varies, and depends on physical activity level, a ...
, and in the treatment of sewage and sludge. After starting as a family business in France in 1939, it has since become a subsidiary of
Suez Environment
Suez SA (formerly Suez Environnement) is a French-based utility company which operates largely in the water and waste management sectors. The company has its head office in La Défense, Paris.Gilbert Degrémont in 1939 on the outskirts of Paris, as a follow-up of his father Emille Degrémont's water treatment company established 1904 at
Le Cateau-Cambrésis
Le Cateau-Cambrésis (, before 1977: ''Le Cateau'') is a commune in the Nord department in northern France. The term Cambrésis indicates that it lies in the county of that name which fell to the Prince-Bishop of Cambrai. Le Cateau station has ...
, the Degrémont company soon entered the international market, with contracts in countries such as Egypt, Iran, Indonesia and Peru. In 1972, the company merged with SGEA to become Lyonnaise des Eaux, which later became part of the Suez Group. Today, it is a subsidiary of Suez Environment and has operations worldwide.
Gilbert Degrémont’s grandfather, Adalbert, had already set up a mechanical engineering plant in the North of France in 1870, which was converted by his son, Emile, into a water treatment business. After completing an engineering degree in agronomics, Gilbert launched the Degrémont company that is still in existence today.
Drinking water
Degrémont is involved in the production of drinking water from groundwater or surface water in industrialized countries and the developing world. Its activities also include the
desalination
Desalination is a process that takes away mineral components from saline water. More generally, desalination refers to the removal of salts and minerals from a target substance, as in Soil salinity control, soil desalination, which is an issue f ...
of seawater or
brackish water
Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estua ...
for use as either drinking water or in irrigation. In all cases the water it produces is expected to meet the regulatory standards in operation in the relevant country.
Degrémont has built 3,000 plants drinking water treatment plants around the world, and 250 desalination plants.
To produce drinking water, it uses a range of different technologies such as settling, flottation, media filters, membrane
ultrafiltration
Ultrafiltration (UF) is a variety of membrane filtration in which forces such as pressure or concentration gradients lead to a separation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained in the s ...
, ozone purification or ultraviolet disinfection systems. Its desalination plants use the reverse osmosis technology.
Sewage and sludge treatment
The company is also involved in the treatment of sewage and sludge, which is a growing problem for urban areas in particular. It relies on a range of different technologies including physical, chemical or biological treatments, ozonization, membrane
bioreactors
A bioreactor refers to any manufactured device or system that supports a biologically active environment. In one case, a bioreactor is a vessel in which a chemical reaction, chemical process is carried out which involves organisms or biochemistry, ...
, sand filters etc. Most wastewater is treated for use in irrigation or for use in industrial cooling systems.
Degrémont has built 2,500 sewage treatment plants with the capacity to recycle 2.4 million cubic meters per day.
Sludge treatment is focused, first, on reducing the volumes of sludge produced and, second, processing it for reuse, mainly in agriculture. This is done through digestion, incineration, thickening, dewatering or drying, all of which can also lead to
biogas
Biogas is a mixture of gases, primarily consisting of methane, carbon dioxide and hydrogen sulphide, produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste and food waste. It is a ...
recovery for use in energy production.
Activities
Degrémont estimates that 1 billion people are served by its 10,000 facilities around the world. These include 3,000 drinking water plants and 2,500 water treatment stations for urban wastewater.
It carries out its activities using a number of different business models.
* It designs, finances and builds facilities for the production of drinking water and for the treatment and recycling of sewage and sludge. This includes desalination plants that notably use reverse osmosis technology to create drinking water from seawater.
* It can also operate those facilities for its customers in the public or private sector when contracted to do so.
* Under its Build-Operate-Transfer contracts, Degrémont is responsible for financing and running facilities during the contract period (up to 25 years). Ownership is then transferred to the customer.
* It sells equipment to facilities owned or run by third parties.
Company culture
Since 1951, Degrémont has published ''The Water Treatment Handbook'', a book containing the company’s combined knowledge of water chemistry and water treatment. There have been 10 French editions and 7 English editions Lavoisier ), and it has been published in 10 languages in total. The company encourages its managers to participate in numerous international conferences and congresses, where they share Degrémont technologies.
Degrémont has obtaine GoodCorporation certification a responsible business practice assessment system looking at the way an organisation is managed in relation to its employees, its customers, its suppliers, its shareholders, the environment and even its contribution to the community.
R&D
Degrémont spent €13.5 million on R&D i 2010 , and has filed over 500 patents since its creation. Recent investments have focused on improving the energy performance of plants and ultrafiltration membranes.