Linde helps protect the environment by supporting the earth’s natural water cycles.
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 through 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 not only delivers high-quality results, but is also extremely cost-efficient.
Improving the quality of raw water
Pure oxygen from Linde is used to improve the quality of raw water in drink 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 when and where it is needed. This replaces the oxygen consumed through oxidation processes and maintains an aerobic milieu, to the benefit of fish and the surrounding area as unpleasant odours are avoided.
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 waste water 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.
Further information on water treatment is available here mit technischen Gasen finden Sie auf der Web-Seite von Linde Gas.