Bad Homburg / Ober-Eschbach wastewater treatment plant

We treat a lot of wastewater and rainwater every day. The water comes from the town of Bad Homburg and the Oberursel Oberstedten district.

The wastewater does not flow to the sewage treatment plant by itself. We monitor and manage 7 stormwater overflow basins. We also look after 5 pumping stations. We treat the wastewater at the treatment plant. We treat the wastewater from many people. The treatment is mechanical, biological and chemical. Our goal is a high purification performance. We want to keep the water clean. We pay attention to the costs.

Bad Homburg is getting a new wastewater treatment plant! The current sewage treatment plant can no longer fulfill the tasks of the future. The number of inhabitants is also becoming too much. A modern and advanced wastewater treatment plant will replace the old one. The project will take many years.

Simply explained: How a wastewater treatment plant works

A lot of water is cleaned every year at the Bad Homburg wastewater treatment plant. We turn on the tap or flush the toilet. We do this every day. But what happens afterwards?

• The wastewater first flows into the treatment plant. It goes through a sieve. The sieve removes large waste such as food scraps. Then comes the sand and grease trap. Small residues such as peas, corn, sand and grease are removed here.
• Then comes the pre-treatment. The water flows through a basin. Organic particles settle out. These particles are placed in large containers. The mechanical cleaning is then complete. The water is now free of the largest pieces of dirt.
• Now comes the biological purification. Small organisms absorb parts of the wastewater. They purify the water naturally. A lot of oxygen is added. Ammonium is converted into nitrogen.
• The third stage is chemical purification. Residues that the organisms were unable to absorb are removed with an agent. The water then flows through the underground secondary clarifier. Finally, it is discharged clean into the Eschbach.