The history of wastewater treatment can be traced back to the Roman period. Excavations have revealed perfect sewer systems, wells, and the recycling of waste products as fertiliser. The knowledge of how to dispose of wastewater was lost in medieval times. Sanitation only became a topic of interest again with the spreading of devastating diseases, e.g. typhus or cholera. In the course of the sewer reforms of the 19th century, physicians, urban planners and architects demanded the controlled removal of wastewater. Life expectancy basically doubled from 40 to 80 years due to such sanitation measures.
In the 1960s, the wastewater problem shifted from domestic sewage to the industry. The concentrated discharge of primarily wastewater containing phosphate resulted in overfertilisation and the serious pollution of the waters. The 1970s were a period of progress in terms of building and operating central wastewater treatment plants (sewage plants), which ultimately led to today’s usual state of the art of 90 per cent connection rate.
Keeping our waters clean is of utmost priority
Water is extremely important to humanity and its both social and economic development.
Wastewater treatment plants play a fundamental role in water protection. Nevertheless, they can only serve their intended purpose, if they are properly maintained and operated. That is why it is determined by law that wastewater treatment plants shall only be operated by trained personnel.
One of the tasks of Abfallverwertung NÖ GmbH is to sustainably secure water as a resource for future generations through measures of wastewater treatment and water pollution control.