This document specifies a method for the determination of the settleability of sludge suspensions. This document is applicable to sludge suspensions from:
- storm water handling;
- urban wastewater collecting systems;
- urban wastewater treatment plants;
- treating industrial wastewater similar to urban wastewater (as defined in Directive 91/271 EEC);
- water supply treatment plants.
This method is also applicable to sludge suspensions from other origin.