During snow melting, road salts get into the sludge in wastewater treatment. Chemical composition of solids in the activation tank changes depending on microorganism metabolisms and chemical composition of inflow wastewater. The electric conductivity in activation tanks as well as intracellular pressure in microorganisms increase. The amount of ammonia nitrogen in the settling tank also increases. The sedimentation of sludge decreases and the outflow water remains turbid. In the activated tank, the content of mixed road salts is 0.5 g l-1.

• MeSH
• chlorid hořečnatý škodlivé účinky   MeSH
• chlorid sodný škodlivé účinky   MeSH
• financování organizované MeSH
• látky znečišťující vodu MeSH
• Nitrosomonadaceae růst a vývoj   MeSH
• odpadní vody mikrobiologie   MeSH