scope:

This European Standard specifies a method for determining the specific resistance to filtration of conditioned and non-conditioned sludges, provided that no sedimentation occurs during filtration (i.e. single phase suspension with particles in suspension).

This European Standard is applicable to sludges and sludge suspensions from:

- storm water handling;

- urban wastewater collecting systems;

- urban wastewater treatment plants;

- industrial wastewater that has been treated similarly 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.