| Abstract: | The relatively poorly water-soluble herbicide Symasin can be oxidized biochemically to a low degree and chemically with potassium dichromate to 73%. With potassium permanganate, on the other hand, only about 5% of the theoretical chemical oxygen demand are consumed. As investigations with municipal wastewaters have shown, by the aerobic wastewater treatment Symasin is not decomposed also with extended treatment times and very intensive aeration. Only at very high dosages Symasin has a toxic effect on warm-blooded animals; various algae species, on the other hand, and also nitrifying bacteria react very sensitively. |
