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Deutsche Welle

DW-TV: That's a worrying development. Here to talk about it and the progress that science is making with water treatment is Ludwig Pawlowski, from the Water Competence Center here in Berlin. Now, we know about rising temperatures of the water here in Berlin, we know about dropping oxygen levels, will the microorganisms be able to react quickly enough to this development?"

Ludwig Pawlowski: So think about climate change. It will be a slowly process the progress is not so fast. We believe and we expect that the biologic reactor you see in the short description will be, will have time enough to react via the way of normal biologic adaptation.

Ludwig Pawlowski: So, normally all the things happen in the nature are not so expensive as you make it by technical way as we do it with oxygen and filtration and for that it is easy to do and cheaper than other ways.

Ludwig Pawlowski: So, for the future we are looking for industrialized chemical structures, are going like Teflon in the kitchen, via the way of water in surface waters. And for that we want to know what happens in the surface water, at least what happens via the bank filtration in our drinking water. It is not the case of the organic substances, what are useful for treatment by biologic reactors.

Ludwig Pawlowski: Yes, we believe that. In a lot of places of the world it is in use. Normally, they shall also look to the real progress of this processes in the underground. In other countries, it can be useful, and help to make a first barrier before the treatment took place to deliver the people the good drinking water.

Ludwig Pawlowski: Yes and no, because you can put this bank filtration idea in artificial recharge system, just with the same conditions, if you have the condition in the area where you are delivering the drinking water.