This website uses cookies.

On our web pages and in our online shop, we use strictly necessary cookies and cookies that are needed to process your queries. We also use tracking cookies, which help us to optimize our online presence and offer you a better browsing experience as a result. ...

You can find further information in our Data Protection Statement. Data protection statement

Functional cookies

These cookies are strictly necessary to enable you to use all the functions and features of GEMÜ web pages. Consequently, they are enabled by default and cannot be disabled. If you wish to avoid these cookies, you can do so by changing the settings in your browser.

Web analysis cookies

Here you can decide whether you want to allow a unique web analysis cookie to be stored in your browser that will enable the website operator to record and analyse various statistical data. If you do not want to allow this, click on the following link to store the Piwik opt-out cookie in your browser.

Unfortunately, GEMÜ is currently unable to store settings for multiple browsers or about multiple user accounts. It is also possible that, irrespective of the security settings you have set in your browser, the cookies set by GEMÜ will be deleted when you close the browser and will therefore no longer be available in your next session. If you close or change your browser, or if you use more than one PC, you may have to make some of the changes again.

Sewage clarification plant / Sewage activating basin

Sewage clarification plant / Sewage activating basin
Domestic sewage is discharged into the presettling basin where it is mechanically cleaned first. Then the prepurified sewage is conveyed to the activating basin. In the first phase, the nitrification phase, oxygen is added in the form of compressed air to support the growth of oxygen consuming bacteria to form what is known as 'activated sludge'. In a second phase, the denitrification phase, no oxygen is added making the previously strongly multiplied bacteria suffer from oxygen deficiency. They now have to utilise other oxygen compounds.
more Applications

Useful for download

159 KB
160 KB