Overview of the cleaning methods
Surge flushing
Back-up flushing
Cleaning balls
Process description
The cleaning balls are introduced into the sewer on a time interval (3-5 cleaning ball cycles per week) and normally by hand (in exceptional cases, also automatically via a ball magazine installed in the shaft). After the cleaning balls have passed the sewer length to be cleaned, they are retrieved via a collection device at an extraction point and then led back into the sewer at the starting point [Dinke1987].
Video:
Depiction of principle of cleaning with beaded cleaning balls with reference to [[Dinke87]] [Source: STEIN Ingenieure GmbH]
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