Reuse of appropriately treated industrial or municipal wastewater can reduce your manufacturing costs through...
Water Treatment Chemicals are an essential part of the Water Solutions offer because they guarantee the reliability of the equipment ...
The ultraviolet rays technique - whose anti-bacterial properties have been known for many years ...
The choice of an end use for the sludge is usually made by taking into account the local, regional and economic context ...
Multi-process solutions help to achieve an optimum cost/safety ratio for each municipal authority...
The high water hardness levels found in some water pose practical problems for both domestic and industrial customers.
The company was founded morethan 150 years ago under the name "Compagnie Générale des Eaux". In 1889 Veolia Water set up an eminent research centre, based at rue d'Anjou in Paris, the company's historic headquarters.
These two terms refer to the same function - that is of water passing through small bars or small holes in order to retain any matter whose size is greater than the area the water is passing through ...
Greasy residues are a major problem when dealing with urban effluent ...
Liming entails obtaining and maintaining a pH greater than 12 for several months. The lime dosage in the form of slaked lime varies from 20 to 50% depending on sludge type ...
Ozone, whose chemical formula is O3, is a gas which is naturally found in the upper most layers of the atmosphere, where it is created from oxygen due to the effect of ultraviolet rays ...
Granular media is contained within a pressure vessel, typically GRP or coated steel. Water enters the top of the vessel and flows downwards through the bed of media, exiting through a collector system at the base. Contaminants are removed by straining and/or adsorption depending on the chosen media.
The growing importance of membranes in the water treatment process is due to various factors ...
Industry has often favoured sites close to rivers for three reasons: transportation of raw materials, water supply for use in cooling systems, disposal of effluents...
The main goal of a disinfection treatment is to destroy - or at the very least inactivate - pathogenic micro-organisms likely to adversely affect the health of water consumers.
Desalination is the process of removing dissolved salts from a liquid...
Deionisation is based on ion exchange technology and removes dissolved minerals and salts from water, as well as some dissolved organics...
Continuous Electro-Deionisation (CEDi) is the latest generation of ion exchange technology. This continuous process produces high purity water without the need for regenerant chemicals.
Clarification is a process whereby liquid is separated from solid matter. Solids settle due to the pull of gravity. The clarification stage is usually preceded by coagulation and flocculation ...
Chlorine is mainly used in the disinfection process in the following forms : chlorine gas Cl2 stored under pressure in liquid phase (bottles and tanks), (liquid) sodium hypochlorite NaOCI, (solid) calcium hypochlorite Ca (CIO)2, 2H20.