Efficiency by Design and Commitment by Heart

Since 1986

Energy saving diffuser systems

Do you want to save energy and reduce operating costs? We’ll get the job done!

Introduced to the market in 1998, our HE® Aeration Systems (HE = High Efficiency) have been in great demand ever since. Working together with your plant’s staff and design consultants, we develop optimization approaches that sustainably reduce energy costs and upgrade plant performance. As documented by numerous studies and tests by independent institutions, the OTT HE® system reduces energy costs by up to 50%.

Each HE® system is designed in exact accordance with your WWTPs needs to ensure consistently high performance and reliability. OTT HE® systems have brought big savings in WWTPs of big cities such as Hamburg, Munich, Columbus and Tokyo – and with equal success in smaller municipal and industrial treatment plants elsewhere.