Omya is a leading global producer of industrial minerals – mainly fillers and pigments derived from calcium carbonate and dolomite – and a worldwide distributor of specialty chemicals.
Founded in 1884 in Switzerland, Omya has a global presence extending to more than 175 locations in over 50 countries with 8,000 employees. The company provides a wealth of product solutions that contribute to its customers' competitiveness and productivity in multiple industries such as Construction, Printing & Writing, Technical Polymers, Packaging, Food, Personal & Home Care, Pharmaceuticals, Agriculture, Forestry, Water and Energy.
For the remineralization of desalinated water Omya produces and offers Omyaqua calcium carbonate chips and Omyaqua powdered calcium carbonate. Omya develops new technology such as a new advanced remineralization process based on micronized calcium carbonate and environmental friendly inorganic Omyafloc flocculants to remove suspended solids from surface, seawater or industrial effluents.
In selected countries Omya s offering include efficient RO Antiscalants & Membrane cleaning & antifouling agents.
The quality of natural water continues to decline due to a number of factors, among them denitrification, increased carbon dioxide in the soil and increased nitrogen and sulfur oxides in rain water. In order to raise the quality of natural water to a potable level, i.e. to a level acceptable for human consumption, we use limestone grades to adjust the pH value, to remineralize the water, or to reduce the water's hardness as defined by the TH value (total hardness).
The grade and types of calcium carbonate used in the treatment of potable water are defined by the European Standard EN 1018 or by local standards.
Acid rain is the result of air pollution caused by gases such as sulfur dioxide and nitrous oxides from industrial activities. It causes open waters to become acidic and develop a low pH. This environmental problem can be solved by spreading our calcium carbonate products on the water to increase the pH of the water.
We can also use our calcium carbonates to limit the eutrophisation of water. The products decrease excess nutrients (phosphate, nitrate) in water by adding Ca ions, which subsequently increases the clarity of the water.
Eutrophication darkens the water and causes algal bloom, odor and the disappearance of fish from the area.
N.B. The information contained in this entry is provided by the above supplier, and does
not necessarily reflect the views and opinions of the publisher