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Passavant® Aqualogic® 

Seonam, Seoul, South Korea

Wastewater Treatment Plant in Seonam, Seoul, South Korea (5.6 Mio PE) Aqualogic® - Process optimization made in Germany


The Seonam wastewater treatment plant treats the wastewater of a large part of Seoul, the capital of South Korea. It is designed for a population of 5.6 million and will be modernized in several steps. The project has a total volume of approx. 1.3 billion dollars and, in addition to the underground sewage treatment plant, includes the park above with an information and leisure center. The most modern and high-performance components are used for the conversion work.


In the first modernization step, two times six sewage lines will be renewed. The lines operate with upstream denitrification. By evaluating several ammonium/nitrate and oxygen measurements, the aeration, recirculation, and return sludge are controlled by Aqualogic® .


Technical Data

Passavant® Aqualogic®

Control system for load-based control of the oxygen input with the   input variables oxygen, ammonium and nitrate
Control of recirculation
Control of return sludge

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