Water treatment industries

Omya works closely with water treatment plants in a range of industries to optimize their processes, improve sustainability and reduce costs.

Paper industry

Omya is a market leader in mineral fillers and coatings for the paper industry. We also provide water treatment products and technical support for the full water cycle in the papermaking process.


Our products offer safe, cost-effective alternatives to caustic soda or magnesium hydroxide for pulp bleaching, pH adjustment and wastewater treatment.

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Food and beverage industry

The wastewater produced by the food and beverage industry is rich in starch and high in organic load.


Our portfolio of solutions is widely used for pH control and performance optimization in the flocculation process, anaerobic digestion and the activated sludge process.  

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Galvanic, printed circuit board and metal finishing industries

These industries all produce wastewater streams that are low in pH and contain dissolved heavy metals.


Omya provides products that neutralize acid and remove various compounds and heavy metals through precipitation. We also enable high purity gypsum recovery.

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Municipal wastewater

Omya’s natural mineral solutions are used for pH stabilization and buffering, providing a suitable environment for biological activity during the activated sludge process and enabling the efficient biodegradation of organics in anaerobic digestion.


For improved safety in sludge handling, raising pH above 12 effectively sterilizes the sludge. 

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Municipal drinking water

Omya provides mineral solutions for the mineralization or remineralization of soft or desalinated water.


Our products are also used for pH adjustment, alkalinity addition and decarbonization, as well as buffering during the treatment process to ensure optimal conditions. 

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Chemical industry

Omya’s mineral solutions deliver efficient neutralization of acidic waste generated by using strong acids in organic or inorganic synthesis. 


The benefits of our products include lower operating costs, improved safety and a reduction in carbon dioxide emissions.

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Mining, ferrous and non-ferrous metal processing

Omya’s technologies are effective for overburden buffering, acidic waste neutralization, and better valorization of by-products such as gypsum.


Our products are used in mining operations, production of concentrates and in metal refining and processing. This includes remediation activities linked to lake and river liming impacted by pollution from old mining activities. 

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Talk to an expert

For more information or advice, please contact us now.

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