In September 2002 the first discussions and the presentation of the CROWN® disintegration system took place at the association of sewage treatment „Untere Selz“ in Ingelheim (Germany). The Ingelheim STP has the special challenge that beside the „normal“ municipal sewage they also receive the sewage sludge of the adjacent Boehringer Ingelheim Pharma GmbH & Co. KG (pharmaceutical industry). Back then the prior aim of the operator of Ingelheim STP was the improvement of the fouling characteristics of the sewage sludge of the Boeringer Ingelheim Pharma as well as a general improvement of the digesting processes at the treatment facility.

In order to have the possibility to check the function and the effectiveness of the CROWN® disintegration system before making the investment the association of sewage treatment „Untere Selz“ and BIOGEST AG agreed that the CROWN® disintegration system would be initially installed and operated on a rental base.

In November 2002 the installation and commissioning of the CROWN® disintegration system was conducted.

In July 2003 – after a 7-month trial period – the operator stated a clear increase of the gas production and an improvement of the sludge qualities. Accordingly the board of the association of sewage treatment „Untere Selz“ decided to take over the CROWN® disintegration system from BIOGEST AG.

In August 2012, after 10 years of experience with the CROWN® disintegration system from BIOGEST AG the managing director of the association of sewage treatment „Untere Selz“, Mr. Engineer Christoph Weisrock, concluded the following (citation):
„The CROWN disintegration system from BIOGEST still produces the tested and confirmed improvements with regard to the gas production as well as the sludge qualities. Over a period of 10 years the operation reliability and robustness of the system was also confirmed. Beside the replacement of normal wear and tear parts the system is still functioning absolutely trouble-free even after 10 years.”

CROWN® disintegration system for Ingelheim STP just before delivery

CROWN® disintegration system for Ingelheim STP just before delivery