This document specifies a method for determining the zone settling velocity (ZSV) and the Compression point.
This document is applicable to sludge and sludge suspensions from:
- storm water handling;
- urban wastewater collecting systems;
- urban wastewater treatment plants;
- 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 and sludge suspensions of other origins.