Scientists propose to purify water with bubbles of carbon dioxide (3 photos)

The problem of wastewater treatment from pathogensbacteria found the original solution using a technique developed at the University of New South Wales in the Australian city of Canberra. Malicious microbes are destroyed by hot carbon dioxide passing through polluted runoff. The technique has shown high efficiency at low cost.

The technique is quite simple, for this purpose in a tank withpolluted water from the bottom serves hot carbon dioxide. Hot bubbles rush to the surface, destroying all harmful microbes along the way. To ensure the destruction of harmful fauna, the temperature of carbon dioxide should be in the range from 100 to 205 degrees Celsius. Savings are achieved due to the fact that it is much easier to heat up a small amount of gas than boil the whole tank with dirty water.

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When testing the method, variousgases, including air, but carbon dioxide showed the highest efficiency. In addition, the gas itself is a process waste discharged into the environment. In the process of cleaning the polluted water is heated to only 55 ° C and no chemical reactions occur with the release of harmful substances.

Carbon dioxide after cleaning passes outon the surface and can be collected for reuse. There is no need to install compressors to create additional pressure - the gas simply heats up. The first testing of the technique took place during the treatment of wastewater from a pig farm.

Source: UNSW Canberra