Our waterways are becoming more and more polluted due to PFAS, plastics, medicines, drugs, and new chemicals made by companies that just hand over the responsibility of cleaning to plants paid for by public moneys. Detecting the different chemicals and filtering them out if getting harder and harder. Could the simple solution of heating up past a point where even PFAS/forever chemicals decomposes (400C for PFAS, 500C to be more sure about other stuff) be alright?
That sounds expensive.
And the chemicals decompose into what? How do you get whatever they decompose into out of the water?
At 500C there’s not much water to speak of… And if they decompose enough it would be a bunch of carbon a hydrogen mainly, so a bit of CO2 and more water.