Linde supports the conservation of natural water supplies. Gases can improve the quality of crude and drinking water and sanitise waste water.
Waste water treatment
Direct injection of pure oxygen can solve a host of problems associated with the treatment of waste water in municipal and industrial purification plants. These range from low oxygen levels and ineffective purification processes to highly unpleasant odours resulting from anaerobic decomposition.
Conditioning drinking water
Using food-grade oxygen and carbon dioxide to treat drinking water is another important example of the environmental gains of industrial gases. It delivers high-quality results and is also extremely cost-efficient.
Improving the quality of untreated water
Pure oxygen from Linde is used to improve the quality of untreated water in potable water reservoirs, lakes used by the public for swimming and other bodies of water.
Linde’s patented “floating diffuser mats,” for example, allow oxygen to be transferred to water far below the surface where it is needed, whenever it is needed. This replaces the oxygen consumed in oxidation processes and maintains oxygen levels to the benefit of fish and the surrounding area, and also prevents certain unpleasant odours.
Water purification
High levels of sulphate and acid in acidic lakes and pit water pose an increasing threat to ground water. Carbon dioxide is used to neutralise and treat these bodies of water, helping to maintain a clean water cycle. Base substances combined with CO2 conditioning help create large hydrocarbonate buffers in open-cast mining lakes. These buffers then combat acidification and prevent water quality from deteriorating.
Process water treatment
Industrial gases make wastewater treatment processes more efficient and cost-effective.
Linde has developed a process for treating boiler feed water that uses hydrogen to bind oxygen dissolved in the water. This method reliably protects plant components against corrosion caused by oxygen in the super-heated steam. Further examples include using carbon dioxide to adjust pH values of base water and using oxygen for conditioning, corrosion protection and speeding up oxidation processes.
| At a glance |
| Name: | Water treatment |
| Country: | Germany, eastern Saxony and Brandenburg |
| Segment: | Chemistry & energy |
| More information: | Water treatment |
