Abstract:
In this paper, the authors aim to present some aspects about the history of treatment plants. If the importance of providing drinking water for a community has been paramount since the beginning of mankind, sewage and wastewater treatment have become widespread only in the modern era. Water consumption increased with the industrialization. The populated centers developed and the population density increased also. At first, after the sewerage networks were built, the sewage, regardless of its nature, was discharged directly into the river. Subsequently, the purification of these waters became a necessity. The first treatment plants offered only a mechanical treatment. It is interesting to see how they were made 100 years ago.
