New Methods in Wastewater Management

In Hamburg, conventional wastewater is passed through a 5,000 km long sewerage system connected to the final destination of the Köhlbrandhöft/Dradenau wastewater treatment plant. The domestic sewage from bathrooms and kitchens in Hamburg is mixed together with rainwater during its transport. The combination of rainwater with the sewage has a diluting effect which makes the elimination of micro pollutants and the recovery of nitrogen and phosphorus more difficult. The diluted wastewater can only be cleaned by incurring high energy costs. HAMBURG WASSER has set a goal to close the material and energy cycles with energy-saving technologies and sustainable concepts.

The significant global changes which have taken place over the past years and decades make it even more important to close energy and material cycles. Resources such as phosphorus and water are becoming increasingly scarce due to an increasing global population.

In Germany however, the drinking water demand is decreasing, which lessens the flow in the sewer line, and thus makes the transport of sewage to the sewage treatment plant more difficult. In addition, demographic changes have brought about an increase of pharmaceutical residues in wastewater. These pharmaceutical residues are very difficult to eliminate.

To respond to these challenges now and in the future, new ways must be found to handle wastewater. HAMBURG WASSER has taken on this task.

Conventional Wastewater Treatment

Background information on conventional wastewater treatment in Hamburg can be found here

A Change in Outlook

More details on the change in outlook can be found here